Answer:
0 m/s
Explanation:
velocity= change in displacement/ time
at rest, the ball does not travel any distance
0/ t
=0
The temperatures (in degrees Fahrenheit) in Long Island recorded by the weather bureau over a week were 42, 49, 53, 55, 50, 47, and 52. Which measure should the weather bureau use to calculate how far apart the upper and lower quartiles of the week's daily temperatures were?
Answer:
Inter Quartile Range
Explanation:
Quartile is a positional statistical average, which divided the data into 4 equal halves.
Q1 (Lower Quartile) has 25% data below it, 75% above it. Q3 (Upper Quartile) has 75% data below it, 25% above it.
Interquartile range is the measure used to calculate how far the lower & upper quartiles are.
A sled with no initial velocity accelerates at a rate of 3.2 m/s^2 down a hill. How long does it take the sled
to go 12 m to the bottom?
the volume of a cube is 64 meter cubic. what is the length of the side of the cube?
How would YOU define speed?
Answer:
Speed is a way of measuring how quickly something is moving or being done, or something moving fast. An example of speed is a car being driven 45 miles per hour. An example of speed is someone cleaning a room in 10 minutes.
write about any five usefulness of pressure in our daily life
Answer:
Some common use of air pressure in daily life is inflating tires, playing musical wind instruments, drinking through straw, flushing toilet, drawing water from well, operating barometer, blowing up balloon, breathing, maintaining body shape especially abdomen.
Explanation: )
Answer:
inflating balloon. pressing the switch.blowing straw.drawing water from wellbreathingHope this is helpful and I would appreciate if you add me as brainliest
Which will hit the ground first if a golf ball and a soft ball are dropped from the same height simultaneously?
Answer:
they both would hit at the same time
Explanation:
Answer: Whichever one is heavier will hit first
Explanation:
Which of the following best describes refraction?
A) The blending of a wave a girls room or passes through opening in a barrier
B) The blending of one wave as two or more waves try to occupy the same space at the same time
C)The bending of a wave as it passes at an angle from one material to another
D)The bending of a wave as it reflects at an
angle from a surface
Answer: C Is The Answer
Explanation:
The option that best describes refraction is Option C. The bending of a wave as it passes at an angle from one material to another.
Refraction is the shift in direction induced by a wave's change in speed when it travels from one medium to another. It is the bending of light when it travels via a translucent medium. Refraction can take place in sound waves or water waves.
The statement is in Option A and Option B is incorrect because refraction does not blend but bend.
Similarly, from Option D, refraction does not reflect at an angle from a surface but reflection does.
Therefore, we can conclude that the Option that best describes refraction is seen in Option C, i.e. The bending of a wave as it passes at an angle from one material to another.
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it takes you 30 minutes to walk an average velocity of 2.om/s south to school. What is your displacement?
Answer:
3600 m SOUTH
Explanation:
avg velocity= (change displacement)/(change in time)
2.0 m/s= x/ (1800 s)
displacement= (2.0 m/s * 1800s)= 3600 m SOUTH
.......
sign explanation
2.0 m/s south= -2.0 m/s (downwards direction)
-2.0 m/s= x/ (1800 s)
x= -3600 m
Introduction This section describes the principles and concepts related to the experiment. It is used to help the person reading your report to understand the information that serves as foundation for the experiment. It also includes a brief statement about the purpose of the lab. Example: Surface tension is the attractive force exerted upon the surface molecules of a liquid by the molecules beneath. Water has a high surface tension because there are strong attractive forces between water molecules. Adding surfactants, like soap, can reduce the surface tension of a liquid. The purpose of the experiment was to determine the effect of soap on the surface tension of water.
Answer:
See explanation
Explanation:
It is a common observation that when water drops on a clean glass surface, it appears as little bags of water.
Surface tension makes water surface act like a stretched elastic skin bag.
Surface tension is caused by attractive forces between the molecules at the surface and the molecules in the bulk of a liquid. Remember that the forces of cohesion between water molecules are very strong.
When surfactants such as soap are added to water, the surface tension of water is decreased, hence the experiment.
the diagram deliver of uniform mass supported at the middle point six Queens of equal mass are placed at mark 4 on on the lift hand side can you balance the liver with 12 Mor coins of equal mass if yes where where would you place them if if not why
Answer:
hmm I don’t understand
Explanation:
what are the units for gravitational field strength ?
Answer:
gravitational field strength (g) is measured in newtons per kilogram (N/kg)
Which is not a reason why the mass of an atom is expressed in atomic mass units rather than in grams?
Scientists could not agree on a standard.
Atomic mass allows for mass differences in isotopes.
The mass in grams is too small to be useful.
Atomic mass units make it easier to compare the masses of atoms.
Answer:
A. scientists could not agree
Answer:
scientists could not agree on a standard
Halpp
will give brainliest
Answer:
The answet is B. Hope thia is right! btw this is also my lesson xD
What is the momentum of an object with a mass of 60 kg and velocity of 10 m/s?
Explanation:
Linear momentum= Mass*Velocity
P=mv
P=60*10
P=600Kg m/s
what is the difference between work and power. will mark brainliest
Answer:
Work is defined as the process of energy transfer to the motion of an object through the application of force. This is usually represented as the product of force and displacement. The SI unit of work is Joule.
Explanation:
Power is defined as the amount of energy transferred in unit time. The SI unit of power is the watt. One watt is equal to one joule per second. Power is a scalar quantity.
I believe
Work is the method of the conversion of energy by the application of force to the motion of an object. Power is the unit-time sum of energy transmitted.
A tennis ball is thrown straight up into the air with an initial velocity of 38 m/s.
a. How long does it take to reach its highest point?
b. How high does the ball travel?
Answer:
a) 3.9s
b)74m
Explanation:
a) v=u+at
0=38+(-9.8)t
-38=-9.8t
t=-38/-9.8
t=3.877s
t=3.9s
b) s=ut+1/2at²
s=(38×3.9)+1/2(-9.8×3.9²)
s=148.2 -74.529
s=73.671
s=74m
What is the wavelength of a wave?
Definition: Wavelength can be defined as the distance between two successive crests or troughs of a wave.
The changes that are visible during a chemical reaction are signs that the nuclei in the reactants have been rearranged.
Please select the best answer from the choices provided
ОТ
OF
Answer:
the answer is F
Explanation: I put T on the question and got it wrong so it's F on edge ;)
A plane starts out at rest. 100 seconds later, its velocity is 300 m/s. What
vas its average acceleration during this time?
Answer:
3 m/s^2
Explanation:
avg. acceleration= (change velocity)/ time
[v(final)-v(initial)]/(t2-t1)
[(300 m/s)-(0 m/s)]/(100s-0)
(300 m/s)/(100s)
= 3 m/s^2
How many types of joints are there in the human body? A. 4 B. 2 C. 12 D. 6
Answer:
there are six types of joints in the human body
Answer: The answer is D. 6
Explanation: Learned in health class a while ago.
Cell phones use digital signals to send and receive information. These digital signals travel as what kind of wave?
ОООО
Gamma rays
X-rays
Microwaves
Radio waves
the answer would be microwaves!
Answer:
Microwaves
Explanation:
Explanation:
what comes down, but never goes up?
Answer:
The answer is RAIN!!!!!!
Explanation:
Rain always goes back up in the form of condensation, steam etc etc etc. That is where the rain comes from
A
person shoves an ice cube off a table. Which of the following acts on the ice cube after it leave
the table but before it hits the floor?
Answer:
friction I would guess? you didnt leave any options.
Explanation:
A man runs at 7.5 m s-1 due east across the deck of a ship which moves at 10.0 m s-1 due north. Determine the resultant velocity of the man( his velocity relative to the water)
Answer:
12.5 m/s North/east
Explanation:
I thought of it as a graph. I basically just found the distance between the points (0,0) and (10, 7.5)!
The resultant velocity of the man is 12.5 m/s.
What is velocity?The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.
Velocity of the man: v₁ = 7.5 m/s (due east )
Velocity of the ship: v₂ = 10 m/s. ( due north.)
Hence, the man and the ship move in perpendicular direction.
So, his velocity relative to the water = the resultant velocity of the man
= √(7.5² + 10²) m/s = 12.5 m/s.
Hence, resultant velocity of the man is 12.5 m/s.
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priyadarshini means..........
Answer:
A submission from India says the name Priyadharshini means "Beloved and pleasing to look at" and is of Sanskrit origin. According to a user from India, the name Priyadharshini is of Indian (Sanskrit) origin and means "God gift".
What happens to the acceleration of a car that travels down a ramp and eventually stops?
Answer:The speed stops because the car loses energy and fuel.
Explanation:
Name any two medium which states about the weather report.
Answer:
1. Government Agencies
2. Television Stations
Explanation:
Weather reports are needed by members of the public to be alert on daily and future weather trends as this would affect how they arrange their affairs. The weather can affect daily movement. For example, when it rains heavily, movement might become limited. Government agencies such as the National Weather Service (NWS), state the weather report.
Television channels like the Cable News Network have programs dedicated to weather reporting. The reporter states what the weather would be like in different cities and the public take note of that.
If the mass of one object is doubled and mass of other remains the same and if distance between them is halved then how does the gravitational force change?
Which two quantities can be used to describe motion?
A. Displacement and velocity
B. Displacement and weight
C. Speed and weight
D. Velocity and mass
Displacement and velocity are the two quantities that can be used to describe motion.
What are the quantities used to describe motion?Motion is defined in terms of displacement, time, velocity, and acceleration. Velocity is defined as the rate of change of displacement whereas acceleration is defined as the rate of change of velocity.
Most of the quantities used to describe motion can be categorized as vectors or scalars. A vector is a quantity that is described by both magnitude and direction whereas a scalar is a quantity that is described by magnitude only.
The motion of an object can be defined as Uniform motion which means equal distance is covered in equal time and a non-uniform motion means an equal distance is covered by an object in equal intervals of time.
So we can conclude that option A is the correct answer.
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I shoot a water balloon catapult at the end of the year rally with a velocity of
57m/s at 31 degrees. What velocity does it hit the ground with?
Answer:
29.36 [tex]m/s[/tex] downwards
Explanation:
Use the equation [tex]v^{2} =u^{2} +2as[/tex]
Choose upwards as positive
v=?
u= 57sin31 (vertical component of initial velocity)
a= -9.8
s=0
[tex]v^{2} = (57sin31)^2 +2(-9.8)(0)[/tex]
v=29.36 [tex]m/s[/tex] downwards
