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REY [17]
3 years ago
11

PLEASE HELP..... Which of these statements is false

Physics
1 answer:
olga_2 [115]3 years ago
3 0
The 3rd one is false. The Earth is FARTHEST from the sun in early July.
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An escalator is 18.3 m long. If a person stands on the escalator, it takes 47.8 s to ride from the bottom to the top. If a perso
Novay_Z [31]

Answer:

20.243 s

Explanation:

Because the escalator and person moving in the same direction, relative velocity can be calculated by summing the velocity of the escalator and velocity of the person.  

The speed of escalator can be calculated as,

v_{escalator}=\frac{x}{t}=\frac{18.3}{47.8}=0.383\ m/s

Relative velocity

v_{relative}=v_{escalator}+v_{person}\\\\v_{relative}=0.383+0.521=0.904\ m/s\\

Therefore total time required to take the person to get to the top

t=\frac{x}{v_{relative}}= \frac{18.3}{0.904}=20.243\ s

8 0
3 years ago
Galileo's contribution to the study of motion
N76 [4]
Helped us in modern days do to his contribution to the study of motion back in the day is what helpes us know how to study motion.

6 0
3 years ago
Will a beam of light that is, at first, in air and oriented perpendicular to the surface of a body of water be deflected as a re
EastWind [94]

When a beam of light  that is, at first, in air and oriented perpendicular to the surface of a body of water be deflected as a result of transition into water--------It does not deflect , the light direction will not change.

What happens to light when it passes through air?

All materials have what is known as an index of refraction, which is linked to how fast light can travel through the material. As light passes through air and into another clear material (such as glass), it changes speed, and light is both reflected and refracted by the glass.

How does light travel through air and water?

When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it 'bends' more towards the normal line.

Learn more about direction of beam of light:

brainly.com/question/31869803

#SPJ4

4 0
2 years ago
An object stays at rest until what happens to it?
bixtya [17]
D. an outside or unbalanced force acts upon the object.
4 0
3 years ago
A shield of material that reflects neutrons is placed around a radioactive sample. Which change in the nuclear reaction is most
Crazy boy [7]

Answer:

A chain reaction will be sustained in a sub-critical mass.

Explanation:

Hope this helps!

If not, I am sorry.

3 0
2 years ago
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