Answer:
18.5 m/s
Explanation:
Take down to be positive.
Given:
Δy = 10.0 m
v₀ = 12.0 m/s
a = 9.8 m/s²
Find: v
v² = v₀² + 2aΔy
v² = (12.0 m/s)² + 2 (10 m/s²) (10.0 m)
v = 18.5 m/s
Define Newton's third law:
A) states that forces=m Xa
B)states that all forces occur in pairs
C)states that forces keep moving until acted upon by unbalanced force
D)states that gravity affects all objects
Help please!!
Answer:
the answer is B
Explanation:
the law states that for every action there is an equal and opposite reaction. action and reaction forces always act on two two different bodies and therefore THEY ALWAYS EXIST IN PAIRS.
Light ray A moves from air to water. Part of ray A is reflected at the air-water boundary. Which arrow in the image is the reflected ray?
E
OA. B
OB.
С
OC.
D
OD. E
Answer:
A. B
Explanation:
The image has been attached.
Reflected ray refers to the ray of light which is reflected back after striking a surface that is non-permeable.
The ray of light which is reflected before the ray touches the surface is said to the incident ray.
According to the given image, ray B is the reflected ray. Ray B is reflected in the air after the ray A strikes at the surface of the water.
B
Explanation:
Since mirrors reflect things, when you shine light at a mirror, it will bounce off of the mirror, or reflect, and shine the opposite direction of where the original light is pointed. The answer would be B because light doesn't go through the mirror, or run along it.
Think of when you through a basketball on the ground. If you bounce it at an angle, it won't just come back to you in the same angle. It will keep bouncing at the same angle you through it. This is pretty much what describes the relationship between ray A and ray B.
HOPE THIS HELPS!!!!!
If you wanted to learn more about ancient scientific knowledge, whose life
would you research?
Answer:
I would like to research Nikola Tesla's life
please i need detailed explanation
Answer:
2Micro Farahds
Explanation:
Its in the picture.
I Hope it helps.
A negative slope on the velocity vs. time graph indicates that the object is not
accelerating
A. True
B. False
Answer: False, I think
Explanation:
Well it depends. Its hard to say without a function of the graph. Given a velocity graph, the first derivative is the acceleration.
Negative slope on a velocity graph means you are going in the negative direction. And over time, your velocity per unit of time is also decreasing. That means we are accelerating in the negative direction
what type of circuit is shown?
A. open parallel circuit
B. open series circuit
C. closed parallel circuit
D. closed series circuit
Answer:
A. open parallel circuit im pretty sure
Explanation:
Answer:
D
Explanation:
The bulbs are on the same wire as the battery, so its series. Current is flowing so its closed.
Can someone give me a situation where energy is being transferred, transformed or both? Thank you!
Boats use echo sounders. Pulses of sound waves are reflected by the sea bed and
detected by a sensitive microphone. The time between an echo sounder sending and
receiving a pulse is 0.005 s. The device calculates the depth of the sea, using the speed
of sound in sea water, which is 1500 m/s.
Use this information to calculate the depth of the sea. Show your working.
Answer: depth = 3.75 m
Explanation:
Taken the speed of the sound in sea to be V = 1500 m/s
The time between an echo sounder sending and receiving a pulse is 0.005 s. That is,
Total time T = 0.005
Formula for echo is:
V = 2X/T
Where X = distance covered
Substitute V and T into the formula
1500 = 2X/0.005
Cross multiply
7.5 = 2X
Make X the subject of formula
X = 7.5/2
X = 3.75 m
Therefore, the depth of the sea is 3.75 m
Isabela is an astronomer studying stars A and B. Star A is farther away from Isabela and yet when Isabela observes the stars, the stars appear to have the same brightness. Which would be the best explanation for this? The stars have the same luminosity. Star A is more luminous than star B. Star B is more luminous than star A.
Answer: star A is more luminous
Explanation:
Answer:
B. Star A is more luminous than star B.
Explanation:
on edg
which of the following is equal to an impulse of 9 units
Answer:
force=2,time=4.5
Explanation:
Thats the answer
For a reaction to occur what must happen to the energy in order to break the chemical bond
What is shown in the diagram?
an electromagnet
a turbine
a motor
a generator
Answer:
an electromagnet
Explanation:
Answer:
the answer is actually D.
A Generator
the guy above me is wrong
......pls brainliest
static electricty is the study of..
A buildup of charge
B electric discharges
C electric fields
D all of the above
Answer:
all of the above
Explanation:
i study this kind of stuff in school
Curtains over a window are an example of _____. A. transmission B. a medium for light C. how light waves do not require a medium D. a substance that does not transmit a wave
Answer:
C
Explanation:
we know that light doesn't need a medium through which to travel because the speed of light is experimentally constant: independent of the movement of the source or detector or the direction in which it travels.
An electron in a mercury atom drops from energy level f to energy level c by emitting a photon having an energy of
1. 8.20eV
2. 5.52eV
3. 2.84eV
4. 2.68eV
Answer:
The answer is 2.84 eV
Explanation:
An electron in a mercury atom drops from energy level f to energy level c by emitting a photon having an energy of 2.84eV.
What is mercury?Mercury is known to be a type of naturally-occurring chemical element that has been discovered in rock that is found in the earth's crust.
They can be found as a form of deposits of coal. On the periodic table, it symbol is "Hg" and it has about 80 atoms. It can be found as Elemental (metallic) mercury, Inorganic mercury compounds, etc.
Learn more about mercury atom from
https://brainly.com/question/964897
What do we call the quantity force multiplied by distance
Answer:
When the force is multiplied by the time of its application, we call the quantity impulse, which changes the momentum of that object.Explanation:
Answer:The quantity force multiplied by distance is called work
Explanation:This is because work is the measure of energy in applying force over a certain distance.
HIME REMAIN
58:15
If business owners want to increase demand for their goods and services, what is the best action for them to take?
increase their models
increase their projections
decrease their prices
decrease their quantities
Answer:
decrease their prices
Explanation:
If we see demand curve then we can observe that demand for good decreases when price increases and demand for good increases when price decreases.
We also know intuitively that customer are price sensitive. That is their buying behavior changes with price of goods, Consumers prefer lower priced good.
So, if business owners want to increase demand for their goods and services
they should decrease their prices.
2) Light reflects off of surfaces. It is also absorbed by opaque materials
and transmitted through transparent objects. Consider this diagram of
tvo sheets of construction paper. Elaborate on the behavior of the
incident light waves
A)
White paper reflects the incoming waves, while black
absorbs the incoming waves.
White paper reflects some of the incoming waves,
while black absorbs all of the incoming waves.
B)
Q
The white paper absorbs and transmits light waves,
while the black paper absorbs all light waves.
Some of the light waves incident on the white paper
D) are reflected and some are absorbed. None of the
Light waves are reflected from the black paper.
Answer: B
White paper reflects some of the incoming waves,
while black absorbs all of the incoming waves.
Explanation:
Light is reflected off of white surfaces. Light is absorbed by opaque materials and transmitted through transparent objects.
In the case of a white paper, a white paper can be considered as a translucent material in which some of the light incident on it bounces off while some pass through it. Therefore, we can conclude that White paper reflects some of the incoming waves,
while black absorbs all of the incoming waves.
A girl is out jogging at 2.00 m/s and accelerates at 1.50 m/s^2 until she reaches a velocity of 5.00 m/s. How far does she get?
Answer:
7.00 m
Explanation:
Given:
v₀ = 2.00 m/s
v = 5.00 m/s
a = 1.50 m/s²
Find: Δx
v² = v₀² + 2aΔx
(5.00 m/s)² = (2.00 m/s)² + 2(1.50 m/s²)Δx
Δx = 7.00 m
A large force will cause_______ acceleration than a small force
Answer:
A large force will produce more acceleration than a small force acting on the same object.
I'M ON A TIMER Ingrid says that a red ball of clay appears red because the clay reflects red wavelengths. Simon says that the clay appears red because it allows red wavelengths to pass through it. Which statement best explains who is correct? Ingrid is correct. The clay appears red because it is opaque. Ingrid is correct. The clay appears red because it is a type of matter. Simon is correct. The clay appears red because it is opaque. Simon is correct. The clay appears red because it is a type of matter.
Answer:
Ingrid is correct. The clay appears red because it is a type of matter.
Explanation:
Explanation: It is A because it only shows red because it only reflects red. If it let any other color pass through it then it could reflect any color.
Help needed.
(1) A small object carrying a charge of
[tex] - 5 \times {10}^{ - 9} \: c[/tex]
experiences a downward force of 10 Newton when placed at a certain point in an electric field
What is the electric intensity at that point.
2. Determine the electric potential due to a charge of
[tex]12 \times {10}^{ - 9} c[/tex]
at a point 6 cm from the charge.
3. A series arrangement of three capacitors of value at 8micro Farahds, 12 micro Farahds and 24 micro Farahds is connected in series with a 90—V battery
(a) Draw and open circuit diagram for this arrangement (b). Calculate the effective capacitance in the circuit
(c) On closed circuit calculate the charge on each capacitor when fully charged
(d) Determine the PD across the 8 micro Farahds capacitors.
Answer:
1. -2×10 ^-9
2. 1800v
3 (ii) 4micro Farhad
(iii) V = 3.60 ×10²
(Iv) 45v
Explanation:
I hope it helps
Two students walk out on the broken bridge together. As they reach the end of the bridge, what would happen to their gravitational potential energy.
A)Decrease
B)increase
C)Remain the same
D)None of the above
Answer: C
Explanation: I dont realy know what this means. but it will not increase because your not getting closer to earths center of gravity and not decreasing because your not high enough in the atmosphere.
8. How does the direction of friction compare to an object's direction of motion?
Answer: The direction of the force of friction is such that it opposes the direction of motion that an object would move if there were no frictional force acting on the object.
The direction of motion and direction of friction have to be in opposite directions for a object to be in motion.
What is motion?Motion is defined as a phenomenon which is described with respect to change in object's position with respect to time.It is given in terms of displacement,velocity,distance ,acceleration,speed.
Branch of physics which deals with motion of objects without any reference to it's cause is called kinematics while the branch which studies forces and their effects on motion is called as dynamics.
Motion applies to various systems like objects,bodies, matter particles ,radiation ,curvature.There are three laws of motion which are proposed by Newton.Classical mechanics is based on Newton's law of motion.Relativistic mechanics is based on modern kinematics.
Learn more about motion,here:
https://brainly.com/question/5961485
#SPJ2
There is a large box and a small box on a table. The same force is applied to both boxes. The large box moves two feet and the small box moves one foot. Which movement shows the most work done? The movement of the large box shows more work because the box moved a longer distance. The work done is equal because the same force was applied to both boxes. The movement of the small box shows more work because the box moved a shorter distance. The work done was equal because both boxes moved in the same direction as the force.
Answer:
The movement of the large box shows more work because the box moved a longer distance.
Explanation:
Select the smallest value from the choices below. (A) 15 x 10-3 (B) 0.15 x 100 (C) 0.00015 x 103 (D) 150 x 10-3 (E) 0.00000015 x 106
Answer:
E
Explanation:
Plug all of them into a graphing calculator and you will see that the last one is the smallest of them all
Answer:
E
Explanation:
Just use comon sense you will get the answer (No offense)
What will happen if a circular coil is used instead of a rectangular coil as the conducting coil in a generator?
Explanation:
when we use our circular coil, the magnetic field will always be perpendicular to the area vector.thus, due to this, sin wt gives sin 90 degree and that gives 1, giving maximum linking of flux associated with the coil at any position .
Answer:
When we use a circular coil, the magnetic field will always be perpendicular to the area vector. Thus, due to this, sinωt gives sin90∘ and that gives 1 , giving maximum linking of flux associated with the coil at any position.
Explanation:
M
An object has a mass of 5.52 g and a volume of 12 mL. What is the density of the object
Answer:
0.46 g/mL
Explanation:
Density can be found using the following formula.
[tex]d=\frac{m}{v}[/tex]
where d is density, m is mass, and v is volume.
We know that the object has a mass of 5.52 grams and a volume of 12 milliliters.
m=5.52 g
v=12 mL
Substitute these values into the formula.
[tex]d=\frac{5.52 g}{12 mL}[/tex]
Divide 5.52 by 12
5.52/12=0.46
d=0.46 g/mL
The density of the object is 0.46 g/mL, and option C is correct.
Which of the following is an example of a visual aid? A. a poster B. a pair of glasses C. a set of note cards D. a copy of a written report
Answer:
a pair of glasses
of course
During every chemical reaction what happens
