HELP ME PLEASE ILL MAKE U BRANLEIST IF WRITE

Physics

2 answers:

miss Akunina [59]3 years ago

7 0

Left left right im pretty sure

katen-ka-za [31]3 years ago

3 0

so the 1st on is the one on the left, middle is right and the 3rd one is the right one

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A girl lifts a 160-N load to a height of 1 m in 0.5 s. How much power is used to lift the load?

12345 [234]

First, find the work done. W = f*d, so 160 N * 1 m = 160 J. Then divide the work by the time to get the power. P = W/t. P = 160 J / 0.5 s = 320 W.
The answer is 320 W. Hope this helps, and have a great day! :)

8 0

2 years ago

A sharp raises a note by

vivado [14]

The answer should be B. A half step

8 0

3 years ago

Read 2 more answers

An elevator is moving down with an acceleration of 3.36 m/s2.

sergeinik [125]

Answer : 413.44N

Here it is given that an elevator is moving down with an acceleration of 3.36 m/s² . And we are interested in finding out the apparent weight of a 64.2 kg man . For the diagram refer to the attachment .

From the elevator's frame ( non inertial frame of reference) , we would have to think of a pseudo force.
The direction of this force is opposite to the direction of acceleration the frame and its magnitude is equal to the product of mass of the concerned body with the acceleration of the frame .
When a elevator accelerates down , the weight recorded is less than the actual weight .

From the Free body diagram ,

$\sf\longrightarrow Weight = mg - ma \\$