PHYSICS HIGH SCHOOL

Air pressure in a tire is maintained because the air molecules areA. very large.
B. constantly changing shape.
C. constantly changing temperature.
D. constantly running into each other.

Answers

Answer 1
Answer:
D. constantly running into each other.


There are five layers of the atmosphere and these are; troposphere, stratosphere, mesosphere, thermosphere and exosphere. The first layer, troposphere, is where we are able to do most of our activities. This is where we can see the formation of clouds, the production of rain, hail, snow and other weather phenomenon. Also, among the atmospheric layers, this layer is where the greatest amount of air pressure because most of the molecules of air are in this area. Like us, air has also mass and the pressure is brought down by the earth’s gravity causing an increase in weight exerted on you as you descend lower into the atmosphere. So, as you enter into the other layers of atmosphere above the troposphere, the air pressure starts to decrease. Below the atmosphere is the hydrosphere. This is where all liquid forms are located. And since the seawater has a greater mass than air, it has the greatest pressure. The answer is b.

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Which project involved the goal of orbiting a manned spacecraft around earth? A. Mercury

B. Apollo

C. Gemini

D. Skylab

Answers

A. Mercury
Project Mercury was designed to send a person into orbit before the Soviet Union did so.

Answer:

The anser is A. Mercury

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I need a equation for a problem in using a pulling force a mass a coefficient of static friction a coefficient of kinetic friction and solving for the frictional force

Answers

The minimum pulling force required to start it moving is
equal to the static frictional force.

F = (mass) x (gravity) x (coefficient of static friction).


Once it's moving, the force required to keep it moving at a steady speed,
without speeding up or slowing down, is the force of kinetic friction.

F = (mass) x (gravity) x (coefficient of kinetic friction).


In both equations, [ (mass) x (gravity)] is just the object's 'weight'.

what is the kinetic energy of a 0.50 g insect traveling in a straight line at 5.0m/s? a)6.25J b) 1.25J

Answers

kinetic energy = 0.5 × mass × speed^2

Ek = 0.5 × 0.50 × 5^2

Ek = 6.25J

Visible light is an example of?

Answers

Answer:

Visible light is an example of electromagnetic waves.

Explanation:

Visible light is an example of electromagnetic waves. The visible light are the range in which the light is visible to the human eye. The wavelength of visible light varies from 400 nm to 700 nm.

The visible region consists of following light namely,

1. Violet : 380–450 nm

2. Blue : 450–485 nm

3. Cyan : 485–500 nm

4. Green  : 500–565 nm

5. Yellow  : 565–590 nm

6. Orange : 590–625 nm

7. Red  :  625–740 nm

Hence, the visible light is an example of electromagnetic wave.
electromagentic waves

What how what why when whtat dh?

Answers