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zhannawk [14.2K]
3 years ago
6

A force of 30n is applied to a screwdriver to pry the lid off of a can of paint. The screwdriver applies 75n of force to the lid

. What is the mechanical advantage of the screwdriver
Physics
1 answer:
gizmo_the_mogwai [7]3 years ago
3 0
The mechanical advantage of the screwdriver that is being described above is equal to 75N. This means that for every 30N that is applied on the screwdriver, this simple machine would in turn apply 75N of force to the lid of the can. 
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Answer:

a) The velocity of the car is 7.02 m/s and the car is approaching to the police car as the frequency of the police car is increasing.

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fs = frequency of police car = 1200 Hz

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Now,

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1250=1200(\frac{v+v_{c} }{v-v_{c} } )\\1250(v-v_{c} )=1200(v+v_{c} )\\v_{c} =\frac{50*344}{2450} =7.02m/s

b) Substitute eq. 1 in eq. 2:

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Momentum is a measure of A.how hard it is to stop an object.

<span>♡♡Hope I helped!!! :)♡♡
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