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zavuch27 [327]
3 years ago
13

Calculate the amount of power in Watts) required to move an object weighing 525 N from point A to point B within 36 seconds. Dis

tance between point A and point B is 3.5 meters and they are at the same level.
Physics
1 answer:
MAVERICK [17]3 years ago
4 0

Answer:

Power required, P = 0 watts

Explanation:

It is given that,

Weight of the object, W = 525 N

Time taken to move from point A to B is, t = 36 s

Distance between A and B is 3.5 m.

Power required to move an object is given by work done divided by time taken.

P=\dfrac{W}{t}

Work done, W=Fd\ cos\theta

The weight of the object is acting in downward direction and object is moving in forward direction such that \theta=90

W=Fd\ cos(90)

Since, cos(90) = 0

This gives, work done = 0

As a result, the power required to move that object is 0 watts. Hence, this is the required solution.

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xxMikexx [17]

Answer:

60 km/h

Explanation:

Simplify the speed:

120÷2=60

Hence, the average speed is 60 km/h.

6 0
2 years ago
In this experiment, you need to examine the idea of thermal energy transfer. Using a controlled experiment, what might a good qu
Mamont248 [21]

We'll look at two properties:

1. The variation in temperature

2. The material's heat transfer coefficient

By taking an example;

Use a circular rod made of a certain material (for example, steel) that is insulated all the way around.

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Conclusion of experiment;

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4 0
2 years ago
A 2.0kg rock is thrown straight up into the air with a speed of 30m/s. Ignore air resistance. What is the net force acting on th
bazaltina [42]

Answer:

19.6N

Explanation:

Given parameters:

Mass of rock = 2kg

Speed  = 30m/s

Unknown:

Net force on the rock  = ?

Solution:

The net force acting on this rock is a function of the acceleration due to gravity acting upon it.

 Net force  = weight  = mass x acceleration due to gravity

 Net force  = 2 x 9.8  = 19.6N downward

6 0
2 years ago
The most precise measurement of the speed of light in vacuum is 299,792,458 m/s. Which of the following values would you use to
Luda [366]

Answer:

v = 3.00 x 10⁸ m/s

Explanation:

given,

speed of light in vacuum = 299,792,458 m/s

speed of light in scientific notation to three significant figures

v = 2.99792458  x  10⁸ m/s

by rounding off the speed to three significant figure.

v = 3.00 x 10⁸ m/s

On the fourth place the value is greater than 5 so, on the third place 1 will be added.

now, the speed with three significant figure comes out to be

v = 3.00 x 10⁸ m/s

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3 years ago
Make a general statement about what happens to light as it enters a different medium.
Aleksandr-060686 [28]

Answer:

Refraction is an effect that occurs when a light wave, incident at an angle away from the normal, passes a boundary from one medium into another in which there is a change in velocity of the light. The wavelength decreases as the light enters the medium and the light wave changes direction.

Explanation:

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3 years ago
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