answers please
5 pointss​

Answers Please5 Pointss

Answers

Answer 1

Answer:

1.a shadow is caused by an object blocking light so that it does not reach a surface. The area in shadow appears black because there is no light falling on it----it appears dark. In fact most shadows are not totally black because light usually bounces around the obstruction off other objects.

2.Shadow gives us the shape about the object and we can know the nature of that image by it's shadow. ... As shadow is complete with the all features of objects like it's shape, size and everything; This helps to know whether the shape of the object. Hence, Shadow tells us about the shape of the object.

3.The bird or an airplane flying high in the sky do not cast their shadow on the ground because they are at very high altitude due to which the ground which acts as screen for the shadow is far away and in absence of the screen the shadow cannot be formed.

Explanation:

BY Roses_are_Rosie


Related Questions

Si la masa es 15.0 kg y la aceleración es 3.0 m/s^2, halla la fuerza en Newton.​

Answers

By applying Newton's Second Law of Motion, the force acting on the mass is 45.0 Newton.

Given the following data:

Mass = 15.0 kilogramsAcceleration = 3.0 [tex]m/s^2[/tex]

To determine the force acting on the mass in Newton, we would apply Newton's Second Law of Motion:

Newton's Second Law of Motion states that the acceleration of an object is directly proportional to the net force acting on the physical object or body, and inversely proportional to its mass.

Mathematically, Newton's Second Law of Motion is given by this formula;

[tex]Force = mass \times acceleration[/tex]

Substituting the given parameters into the formula, we have;

[tex]Force = 15.0 \times 3.0[/tex]

Force = 45.0 Newton

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A mass m is released from a height h above the ground. It is given an initial horizontal velocity of magnitude v0. What is the speed of the mass when it hits the ground

Answers

The speed of the mass when it hits the ground from the given height is [tex]\sqrt{2gh}[/tex].

The given parameters:

mass of the object, = mheight of fall = hinitial horizontal velocity, = V₀

The final velocity of the ball when it hits the ground is calculated as follows;

[tex]v_f^2 = v_0_y^2 + 2gh\\\\[/tex]

where;

[tex]v_0_y[/tex] is the initial vertical velocity velocity = 0g is the acceleration due to gravity = 9.8 m/s²

[tex]v_f^2 = 0 + 2gh\\\\v_f^2 = 2gh\\\\v_f = \sqrt{2gh}[/tex]

Thus, the speed of the mass when it hits the ground from the given height is [tex]\sqrt{2gh}[/tex].

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What is Io’s rock cycle

Answers

Answer:

Transitions through geologic time among 3 rock types

Explanation:

Why would a train need more than one locomotive? Apply forces and net forces to explain what problems might be solved by adding locomotives to a train.

Answers

The more the number of locomotives in the train the greater the net force supplied to move the train forward.

A train is used for transportation on land. A train consists of a locomotive engine which provides the forward force which the train requires to move from place to place.

The more locomotives, the more power is provided to pull the train forward thereby providing a greater net force that moves the train in the forward direction.

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Question 5 (2 points)
How many players are on each team playing on the court in an official game of
basketball?

3

4

5

6

Answers

Answer:

5

Explanation:

searched it up

(a) A car with a mass of 950 kg is moving to the right with a constant speed of 1.65 m/s. What is the total force on the car

Answers

Answer:2094 ibs

I hope this helps! Please give it a <3

Mga tanong 1. Ano ang nangyari sa lobo? 2. Sa iyong palagay, saan napunta ang pumutok na lobo? 3. Kapag pumutok ang lobo ano ang lalabas? 4. Kung kulay pula ang lobo kulay pula din ba ang hanging lalabas dito? Bakit? ​

Answers

Answer:

1. Pumutok ang Lobo

2.basurahan

3.may kwentong po ba to paano ko masagot ng wala naman akong mababasang kwento :) :) :)

The Earth's plates moved over millions of years, bringing continents and other
features of the Earth to their present arrangement.
How is this movement of the lithosphere explained?
continental drift
• the principle of superposition
• the theory of plate tectonics
nuclear fusion

Answers

Answer:

theory of plate tectonics

Explanation:

Answer:

What he said above me

Explanation:

I did the test and it was right

What is the force of Friction Between A plack of ice those weighs 950N And The ground if ù = 0.127 A 65N B. 114N C. 175N. D. 226N​

Answers

pic attached !!

hope it helps..(ʘᴗʘ✿)

Imaging playing a game of baseball on the moon, which has less gravity than Earth and no atmosphere. How would you want to change the game to make it play fairly and fun?

Answers

Answer:

In order to reduce the mass of the bat and raise the mass of the ball, the transfer of momentum could only be extended to a distance equal to the size of a baseball stadium. Although the ball's acceleration stays constant regardless of its mass (provided that the mass is less than the mass of the moon), your running time around the bases will be reduced as a result of the increased mass of the ball.

Explanation:

Hope it helps:)

For anyone taking the Velocity and Acceleration Quick Check, Here are the answer.s!

1. Question: Students are going to conduct an experiment to study the effect of a net force applied to an object on the object’s motion. In each trial of the experiment, the students will apply a net force on the object. They also need to take two other measurements. What are the other quantities they should measure in each trial of the experiment?

1. Answer: mass and acceleration

2. Question: Which statement makes an accurate comparison of the motions for objects C and D?

2. Answer: Object C has an acceleration that is greater than the acceleration for D.

3. Question: An object has a starting position of 2 m, a starting velocity of 15 m/s, and is moving at a constant speed. Which option shows the final position of the object after 1 s?

3. Answer: 17 m

4. Question: The graph of an object's position over time is a horizontal line and y is not equal to 0. What must be true about the object's motion?

4. Answer: The velocity is zero.


Hope this helps anyone!!

Answers

Answer:

this is 100% correct

Explanation:

All good if you have 4 questions.

1. Mass and Acceleration

2. Object C has an acceleration that is greater than the acceleration for D.

3. 17 m

4. The velocity is zero.

OR...if you have 5 questions...

1. Mass and Acceleration

2. 4.0

3. Object C has an acceleration that is greater than the acceleration for D.

4. 17 m

5. The velocity is zero.

Hope this helps!


What type of reflection would you get from a rough surface?

Answers

Diffuse Reflection.
For a rough surface, reflected light rays scatter in all directions. This is called diffuse reflection. Diffuse reflection is when light hits an object and reflects in lots of different directions. This happens when the surface is rough.

Question 13 (2 points)
A mass of 5.00 kg is in a gravitational field of�7.00�N/kg�. What force acts on the mass?
Question 13 options:

35.0 N

0.71 N

1.4 N

9.8 N
Question 14 (2 points)
If you plotted vector arrows around a mass to represent gravitational field vectors, describe how the length of the arrows would change as the locations at which they are drawn become closer to the mass that produces the field.
Question 14 options:

The arrows would become shorter.

The arrows would become longer.

The arrows would remain the same length.

The arrows would become shorter and reverse direction at some distance.
Question 15 (2 points)
What is Kepler's first law of planetary motion?
Question 15 options:

Planets have circular orbits.

Planets have elliptical orbits.

The eccentricity of a planet's orbit is proportional to its distance from the sun.

The period of a planet's orbit is proportional to its distance from the sun.
Question 16 (2 points)
Which of these is correct about the moon's motion around the earth?
Question 16 options:

Centrifugal force acting on the moon balances the force of the earth's gravity.

The moon is in free fall.

There is no gravity acting on the moon because it is in orbit.

The moon exerts no gravitational force on the earth.
Question 17 (2 points)
Which of the following objects do not have gravitational fields?
Question 17 options:

apple

boulder

cat

all objects have gravitational fields
Question 18 (2 points)
Which of the following will generate the largest gravitational field?
Question 18 options:

a paperclip

a dog

a computer

the Earth
Question 19 (2 points)
What happens to the gravitational force between two objects if the distance between them decreases?
Question 19 options:

The gravitational force increases.

The gravitational force decreases.

The gravitational force stays the same.

The gravitational force is not related to the distance.
Question 20 (2 points)
What happens to the gravitational force between two objects if the distance between them increases?
Question 20 options:

The gravitational force increases.

The gravitational force decreases.

The gravitational force stays the same.

The gravitational force is not related to the distance.
Question 21 (2 points)
What happens to the gravitational force between two objects if the mass of both increases?
Question 21 options:

The gravitational force increases.

The gravitational force decreases.

The gravitational force stays the same.

The gravitational force is not related to the distance.
Question 22 (2 points)
What happens to the gravitational force between two objects if the mass of both decreases?
Question 22 options:

The gravitational force increases.

The gravitational force decreases.

The gravitational force stays the same.

The gravitational force is not related to the distance.
Question 23 (2 points)
Which of these is generally considered to have been discovered by Einstein?
Question 23 options:

Mass bends space-time.

Space is empty.

An electric charge produces an electric field around it.

Gravity causes acceleration.
Question 24 (2 points)
Which of the following scientists is not involved with gravitation?
Question 24 options:

Einstein

Kepler

Newton

Curie
Question 25 (2 points)
What type of force is gravitational force?
Question 25 options:

field force

applied force

contact force

Answers

The required answers are stated below:

13. The force acting on the mass can be calculated by:

Force = mass x gravitational field

          = 5.0 x 7.0

          = 35.0 N

The force acting is 35.0 N. Thus, option A.

14. When the location of the arrows become closer to the mass, the arrows would become shorter. Option A.

15. Kepler's first law of planetary motion is: Planets have elliptical orbits. Option B.

16. The correct option is A. Centrifugal force acting on the moon balances the force of the earth's gravity.

17. Considering the given options, all the objects have gravitational fields. Thus option D.

18. The Earth will generate the largest gravitational field. Option D.

19. When the distance between two objects decreases, the gravitational force between them increases. Option A. The gravitational force increases.

20. When the distance between two objects increases, the gravitational force between them decreases. Option B. The gravitational force decreases.

21. When the mass of two objects increases, the gravitational force between them increases. Option A. The gravitational force increases.

22. When the mass of two objects decreases, the gravitational force between them decreases. Option B. The gravitational force decreases.

23. Einstein discovered that: Gravity causes acceleration. Option D

24. The scientist from the given options that is not involved with gravitation is Curie. Option D.

25. Force field is a type of force that do not require contact before it can be felt. Gravitational force is a field force. Option A.

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What energy transformation takes place when you turn on an electric light?

A) chemical-light-heat

B) chemical- electrical- heat

C) mechanical-light-heat

D) electrical-light-heat

Answers

Answer:

D) electric-light-heat

Which statement is true about all liquids? (1 point) O They can change in volume and shape. They keep their volume but can change shape O They keep their shape but can change volume. O They keep their shape and volume​

Answers

The second statement is true about liquids i.e. they keep their volume but can change shape.

The volume retention and conformity to the shape of a liquid's container are two of its most noticeable physical characteristics. When a liquid substance is poured into a container, it conforms to the shape of the container and will stay inside the container so long as the liquid state persists.Liquids do not have a set shape, only a fixed volume.You can compress liquids but to compress them, a lot of pressure is needed.Compared to solids, liquids have lower densities.The attraction between molecules is weaker than that between solids.There is a lot of room between the particles.

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g A small ball is tied to one end of a light 2.5-m wire, and the other end of the wire is hooked to the ceiling. A person pulls the ball to the side until the wire makes an angle of 35° with the plane of the ceiling and then gently releases it. What is the angular speed of the ball, in rad/s, as it swings through its lowest point?

Answers

The angular speed of the ball as it swings through its lowest point is 1.8 rad/s.

The given parameters;

radius of the circular path, r = 2.5 m

angle with the vertical, θ = 35⁰

The angular speed of the ball, as it swings through its lowest point is calculated as follows;

[tex]Tcos \theta = m\omega ^2 r\\\\mgcos \theta = m \omega ^2 r\\\\gcos \theta = \omega ^2 r\\\\\omega ^2 = \frac{gcos \theta }{r} \\\\\omega = \sqrt{\frac{gcos \theta }{r} } \\\\\omega = \sqrt{\frac{9.8 \times cos (35) }{2.5} } \\\\\omega = 1.8 \ rad/s[/tex]

Thus, the angular speed of the ball as it swings through its lowest point is 1.8 rad/s.

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Calculate that object's net displacement over the time shown.

a. 540 m

b. 2,520 m

c. 2,790 m

d. 5,040 m

Answers

Answer:

c

Explanation:

im sorry if im wrong

mark me as brainlist please thank you

What is role of force according to Newton's second Law?​ full answer

Answers

Newton’s second law says that when a constant force acts on a massive body, it causes it to accelerate, to change its velocity, at at constant rate

How could scientists investigate why flying squirrels fluoresce?

Answers

Answer:The reasons for the squirrels to fluoresce pink is still under investigation, but communication and camouflage are two top contenders for why this might be happening, the team has hypothesized. “They could be communicating with members of their own species by showing off their fluorescence to each other, or it might be a sort of mating display,”              

is this what you are looking for

Explanation:

Answer:

Left to right: Northern Flying Squirrel (Bruce Museum Collection), UV lit photo of Northern Flying Squirrel at feeder, UV lit photo of Northern Flying Squirrel climbing tree.Over time, uroporphyrin builds up in their bones and teeth, leading them to fluoresce a bright pink color when exposed to ultraviolet light.

Explanation:

What is the melting pont of a champurrado?

Answers

Answer:

Well If the unknown is one of four possible compounds which melt at 102, 104, 106, and 108° C, it is most likely that which melts at 108° C. To summarize, an impure solid melts over a wide range and at a temperature lower than that of the pure solid.

Explanation:

I have known this since grade school

While surfing the Internet, you encounter an article written by a foreign  blogger saying negative statements and malicious stories about Filipinos. Reading further,  you find at the comments section outraged replies from the Filipino community.  However, you also find citizens who affirmed the negative statements. Knowing that  everyone has the freedom to express his opinion, what do you think are the possible ways  to resolve the issue?While surfing the Internet, you encounter an article written by a foreign  blogger saying negative statements and malicious stories about Filipinos. Reading further,  you find at the comments section outraged replies from the Filipino community.  However, you also find citizens who affirmed the negative statements. Knowing that  everyone has the freedom to express his opinion, what do you think are the possible ways  to resolve the issue?


POSSIBLE SOLUTION 1: _______________________________________________________ _______________________________________________________________________ POSSIBLE SOLUTION 2: _______________________________________________________

__________________________________________________________________________ 
BEST SOLUTION: ____________________________________________________________ ________________________________________________________________________________________________________________________________________________


Answers

The ways to solve this problem is through knowledge dissemination, citizens who were outraged by the article about the negative statements and malicious stories about Filipinos, could submit positive articles about the culture of the Filipino people.

Another way could be through open dialogue, with Filipino internet users, publicly apologizing seeking to become more involved with the Filipino community.

Therefore, the best way to solve the problem is through ethically-based freedom of expression, avoiding stereotypes of a culture you don't belong to, and looking for a way to disseminate respectful and empathetic information about a people.

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2. A bullet traveling at 8.0 x 10 2 m/s horizontally hits a target 180 m away. How far does the
bullet fall before it hits the target?

Answers

Answer:

Explanation:

The bullet travels for a time of

180 m/800 m/s = 0.225 s

Assuming the original velocity was horizontal

h = ½(-9.8)0.225² = 0.25 m

The bullet will accelerate as it descends at the same rate  that it slowed down as it rose, since gravity is constant (i.e., it doesn't vary). It will therefore be travelling at the same speed as when it was first fired from the gun when it reaches the bottom.

What far does the bullet fall before it hits the target?

As soon as the gun is discharged, the propellant in the barrel expands, speeding up the bullet. The bullet is no longer propelled once it exits the muzzle since the gasses can now escape outside and the bullet is now encountering air resistance. Therefore, the muzzle velocity at the barrel's exit is the highest it can be.

A bullet thrown straight up on Earth would be able to reach a maximum height of around three kilometres (about 10,000 feet (ca. 3 km)), assuming there is no wind, before falling back to Earth.

Therefore, The bullet travels for a time of 180 m/800 m/s = 0.225 s assuming the original velocity was horizontal h = ½(-9.8)0.225² = 0.25 m.

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I will give brainlist

A spring of spring constant k=500 N/m is elongated from its initial length by a distance x=2 cm, then the force applied by the spring is:

A. F= 3N.

B. F= 10 N.

C. F=500 N.

D. F= 0N.

Answers

Answer:

1.96 kg * m2/s2

Explanation:

I'm assuming that you are asking what is the elastic potential energy stored in the spring at the position stretched by 16.5 cm...

Since you know the spring constant k, 144 N/m and the spring stretch from the equilibrium position x, is 16.5 cm, or 0.165, you find the spring's potential energy from the equation PE = 12kx2, which equals 1.96 Joules, or kg * m2/s2 if you want SI units.

Derive an Equation for the total magnetic field B for a narrow cell​

Answers

Answer:

[tex]{\tiny \tiny \: {\color{limegreen} \color {limegreen}{\tt \tt \tt \tt{✓\: \: Verified \: \: \: answer \: \:}}}} [/tex]

help me please!

The graph of an object's position over time is a horizontal line and y is not equal to 0. What must be true about the object's motion?(1 point)

A. The velocity is zero.

B. The acceleration is constant and non-zero.

C. The velocity is constant and non-zero.

D. The acceleration is negative.

Answers

Answer:

Explanation:

1.) Students are going to conduct an experiment to study the effect of a net force applied to an object on the object’s motion. In each trial of the experiment, the students will apply a net force on the object. They also need to take two other measurements. What are the other quantities they should measure in each trial of the experiment?

ANSWER: mass and acceleration

2.) Use the data table to answer the question. It shows the acceleration of a body when a net force is applied to it.

Net force (N) Mass (kg) Acceleration (m/s2)

5.0 5.0 1.0

10.0 5.0 2.0

20.0 5.0  

Which value would complete the last cell?

ANSWER: 4.0

3.) Which statement makes an accurate comparison of the motions for objects C and D?

ANSWER: Object C has an acceleration that is greater than the acceleration for D.

4.) Use the equation for motion to answer the question.

x=x0+v0t+12at2

An object has a starting position of 2 m, a starting velocity of 15 m/s, and is moving at a constant speed. Which option shows the final position of the object after 1 s?

ANSWER: 17 m

5.) The graph of an object's position over time is a horizontal line and y is not equal to 0. What must be true about the object's motion?

ANSWER: The velocity is zero.

hope this helps <3

As the graph shows, position over time is a horizontal line and y is not equal to 0 then the velocity is zero. Hence, option A is correct.

What is Acceleration?

Acceleration is the rate at which the speed and orientation of a moving object change over time. When a spot or object moves faster or slower along a straight line, it is said to be accelerated. Even though the speed is constant, motion on a circle accelerates so because the direction is always shifting. Both by and to acceleration for all other types of motion.

It is a vector quantity because it has both magnitude and direction.

If the graph of an object's position over time is a horizontal line also y is not equal to 0 then it means that the velocity is zero, it cannot be constant or non-zero.

Therefore, it concludes that the velocity is zero and option A is correct.

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Which statement is correct based on the data in the table?

Answers

I believe it’s B




I’m torn between B and C

What is the coefficient of Static Friction if It Takes 44N of force to move A Box that Weight 86N ? A, 0.78 B 0.51. C.0.78N D. 0.51N.
PLEASE AWNSER CORRECT BEFORE I GO TO SCHOOL​

Answers

pic attached !!

hope it helps!!

17. Saan daw nakasakay ang mga Austronesyan nang dumating sa bansa? A. Bangka B. balangay C galyon D. barko


this is a.p ok​

Answers

Answer:

D.barko po

Explanation:

I trying my best

How is hydrogen obtained and separated from other nearby substances?
How is Hydrogen used?
What products are made from Hydrogen?
Where might Hydrogen be seen or used in everyday life
Any environmental concerns about the use of Hydrogen?

IF YOU ANSWER ALL I WILL MARK YOU BRAINLIEST AND BE REALLY HAPPY

IF YOU DON'T ANSWER ALL THE QUESTIONS I WILL REPORT
I AM GIVING A LOT OF POINTS FOR THIS, SO I WANT THE BANG FOR MY BUCK

Answers

Answer:

How is hydrogen obtained and separated from other nearby substances?

photoelectrolysis, a photoelectrochemical cell submerged in water uses sunlight to separate the water into hydrogen and oxygen bubbles. In the thermochemical cycle, water is heated to 800 to 1,000 °C, with the molecule. splitting to release hydrogen. The main drawback of this method is that it requires nuclear power

How is Hydrogen used?

Hydrogen can be used in fuel cells to generate electricity, or power and heat. Today, hydrogen is most commonly used in petroleum refining and fertilizer production, while transportation and utilities are emerging markets

What products are made from Hydrogen?

Hydrogen is a very useful element. It is used to make ammonia for fertilizers, refining metals, and methanol for making artificial material like plastics. Hydrogen is also used as a rocket fuel where liquid hydrogen is combined with liquid oxygen to produce a powerful explosion.

Any environmental concerns about the use of Hydrogen?

Emissions of hydrogen lead to increased burdens of methane and ozone and hence to an increase in global warming. Therefore, hydrogen can be considered as an indirect greenhouse gas with the potential to increase global warming.

There are several ways to model a compound. One type of model is shown. 4 C's are connected in a line by 3 black lines. The C on the left has 3 H's attached to it each by a black line. The next C has 1 H attached by a black line and 1 O attached by 2 black lines. The next C has 2 H's attached to it by 1 black line each. The last C has 2 H's attached to it by 1 black line each and 1 O attached by a single black line. That O has an H attached to it by 1 black line. What is the chemical formula for the molecule represented by the model? CHO C4H9O2 C4H8O C3H8O2

Answers

Answer:

The chemical formula for the molecule is [tex]C_4H_9O_2[/tex]

Explanation :

Molecular formula : It is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

Structural formula : It is a formula in which the lines are used between the bonded atoms and the atoms are also shown in the structural formula.

In the structural formula, the lines are used between the atoms.

As per given information of compound we conclude that, there are 4 carbon atoms, 9 hydrogen atoms and 2 oxygen atoms.

Thus, the chemical formula for the given molecule will be,  [tex]C_4H_9O_2[/tex]

Answer:

B is the answer

Explanation:

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