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Helen [10]
4 years ago
10

How can a machine make work easier for you?

Physics
1 answer:
Elena-2011 [213]4 years ago
8 0

The correct answer is B- by changing the direction of your force

1.B 2.C 3.B 4.D 5.B 6.C

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A bullet is fired at a speed of 2434 ft/s. what is this speed expressed in millimeters per minute?
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3 years ago
Energy is transmitted only in indivisible discrete quantities. True or False
alex41 [277]

Answer:

False

Explanation:

From the fact that light is emitted in portion, it does not follow that light ray is discrete in structure.

The way Einstein put it was that if a beer is always sold in pint bottles, that does not mean that beer contain of indivisible pint bottles. Yet experiments in which light  knocked electrons out of materials insistently made the point that light is absorbed only in the form of discrete portions. An emitted portion or quantum of light energy retains it's individuality in subsequent events as well.

This concept was first stated by Einstein in 1905. From the heuristic point of view that he developed light is always made up of discrete portions possessing energy and momentum.

5 0
3 years ago
What types of rock make up the oceanic crust and how do they form?
Butoxors [25]
Oceania crust is typically made up of igneous rocks such as basalt. Igneous rocks are formed when lava flows from volcanoes cool and harden.
8 0
4 years ago
You accelerate your 1500 Kg car from 2 m/s to 12 m/s in 2 seconds. How do you determine
laiz [17]
1) The acceleration

Acceleration = Change in Speed / Time
Acceleration = (12 - 2) / 2
Acceleration = 10 / 2
Acceleration = 5m/s^2 (This is the unit for acceleration)

2) Initial momentum

Momentum = Mass x Velocity
Momentum = 1500 x 2
Momentum = 3000kg m/s (This is the unit for momentum)

3) Final momentum

Momentum = Mass x Velocity
Momentum = 1500 x 12
Momentum = 18000kg m/s

4) Change in momentum

Change in momentum = Final momentum - Initial momentum
Change in momentum = 18000 - 3000
Change in momentum = 15000kg m/s

5) Force

Force = Mass x Acceleration
Force = 1500 x 5
Force = 7500N (This is the unit for force)

Hope that helps :)

6 0
4 years ago
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