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Bas_tet [7]
3 years ago
11

1. A student weighing 460.0 N climbs a vertical stairway that is 4.5 m high in 32.5 seconds. What is his power output?

Advanced Placement (AP)
1 answer:
Andreas93 [3]3 years ago
5 0

Answer:

1. Power = 63.69 Watts.

2. Workdone = 559 Joules.

3. Force = 132.5 Newton.

Explanation:

Given the following data;

1. Force = 460N

Distance = 4.5m

Time = 32.5 seconds.

To find the power;

First of all, we would determine the work done by the student using the formula;

Workdone = force * distance

Workdone = 460 * 4.5

Workdone = 2070 Joules.

Now, we can calculate the power;

Power = workdone/time

Power = 2070/32.5

Power = 63.69 Watts.

2. Force = 215N

Distance = 2.6 m

To find the work done by the worker;

Workdone = 215 * 2.6

Workdone = 559 Joules.

3. Workdone = 318 Joules

Distance = 2.4m

To find the magnitude of force applied;

Force = workdone/distance

Force = 318/2.4

Force = 132.5 Newton.

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Answer:

Hi! I had the same FRQ so I thought I would help you out. Answer is below

Explanation:

PART A

<u>Encoding failure</u> is the brain’s failure to create a memory link between something. Encoding usually refers to the brain’s ability to retain and recall information and when that malfunctions, it is known as encoding failure. In this case, encoding failure would lead Brian to failure. This is because during the written portion of the exam if he is not able to remember anything he studied prior to the exam then he will have trouble completing the test. He may have studied hours on end and used all his free time to study yet still struggled during the exam. This could cause him to fail the test if he doesn’t remember anything.

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<u>Distributed practice</u> is a learning strategy in which you practice for a short session over a long period of time. A choir student may practice for 30 minutes, take an hour break, and repeat all day for a whole week so their voice can rest. For Brian, using this learning strategy can help his brain retain the information easier since he is getting a break. Reviewing something over and over again for a long time can get tiresome and boring. By studying for a little and then taking a break, his brain can rest. Brian may have an easier time retaining the information he needs for his exam because of this strategy. This can lead him to success.

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