The transfer of thermal energy via electromagnetic waves is know as what
1 answer:
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The magnitude of the friction on the cart is 28,56 N
To measure the deceleration of a car, without the value of the time of the movement, the <u>Torricelli equation</u> is used, which consists of:
Where is final velocity, is initial velocity, is acceleration, and is displacement.
Now, substitute the values in the formula:
Finally, the value of the acceleration found is multiplied by the mass of the object, thus measuring the friction force:
Learn more about friction force at: brainly.com/question/13707283
Answer:
There are finally 4 rotations per second.
Explanation:
If a trapeze artist rotates once each second while sailing through the air, and contracts to reduce her rotational inertia to one fourth of what it was. We need to find the final angular velocity. It is a case of conservation of angular momentum such that :
Let ,
and
So,
So, there are finally 4 rotations per second. Hence, this is the required solution.