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Ad libitum [116K]
3 years ago
12

a moving freight car collides with an identical one that is at rest what happen to the second car after the collison

Physics
1 answer:
irakobra [83]3 years ago
7 0
It moves backwards do to the impact. this is because force can not be created nor destroyed so it is transferred.<span />
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What are the units for measuring current and voltage
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The unit for measuring voltage is a " voltmeter ".

The unit of measure for electrical current is the " Ampere ".

The unit of measure for potential difference (voltage) is the " volt ".


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3 years ago
Two cars move down a hill at a constant velocity. Car c is much larger than car d. The car that has a greater momentum is:
babunello [35]

Answer:

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Why is it important to keep the muzzle of a firearm pointed in a safe direction, even though the firearm's safety is engaged?
Gnom [1K]
The correct answer is B. The safety only prevents you from pulling the trigger, but does not stop the pin from striking the primer. For example, if you drop the firearm, the pin may hit the primer and fire the firearm. It is always responsible to keep the firearm pointed in a safe direction so that if this happens, no consequences come out of it.
6 0
3 years ago
What is the change in length of a 1400. m steel, (12x10^-6)/(C0) , pipe for a temperature change of 250.0 degrees Celsius? Remem
8090 [49]

Answer:

\Delta L = 4.2 m

Explanation:

As per the formula of thermal expansion we know that

L = L_o(1 + \alpha\Delta T)

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so here change in the length of the rod is given as

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\Delta L = L_o \alpha \Delta T

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\Delta L = 4.2 m

8 0
4 years ago
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