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GuDViN [60]
3 years ago
15

A 42-kg crate rests on a horizontal floor, and a 52-kg person is standing on the crate. (a) determine the magnitude of the norma

l force that the floor exerts on the crate. (b) Determine the magnitude of the normal force that the crate exerts on the person.

Physics
1 answer:
Lemur [1.5K]3 years ago
6 0
Hope this helps you.

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a radio antenna broadcasts a 1.0 MHz radio wav e with 21 kW of power. Assume that the radiation is emitted uniformly in all dire
My name is Ann [436]

Answer:

I=2.67\times 10^{-6}\ W/m

Explanation:

Given that,

Frequency of a radio antenna is 1 MHz

Power, P = 21 kW

We need to find the the waves intensity 25 km from the antenna . The object emits intenisty evenly in all direction. It can be given by :

I=\dfrac{P}{4\pi r^2}\\\\I=\dfrac{21\times 10^3}{4\pi (25000)^2}\\\\I=2.67\times 10^{-6}\ W/m

So, the wave intensity 25 km from the antenna is 2.67\times 10^{-6}\ W/m.

5 0
3 years ago
Write a general scientific question that you will answer by doing this experiment.
il63 [147K]

Answer:

How does newtons first two laws of motion apply to the toy car?

Explanation:

7 0
3 years ago
Is a table made from minerals?
Serga [27]
A table can be made from minerals but other kinds of solids as well 
3 0
3 years ago
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If you wanted to live where the chances of a destructive earthquake were small, would you pick a location near a fault zone, nea
exis [7]

Answer: A volcanic island arc like Hawaii.

Explanation: The Hawaiian island is the most safest place for the people to live in comparison to the other given options.

The plate tectonic movement generates energy due to collision, resulting in sudden release of energy, and seismic waves are produced that propagates and causes earthquake.

Due to the constant collision between the plates, different places at different time experiences earthquake. Near a fault region, earthquakes are very severe, and also near the mid oceanic ridge it is not possible for a person to live. The subduction zones are the region where a denser plate subducts beneath the other, and its impossible for life to exist there.

Thus the most safest place out of all the option is the volcanic islands where numerous people resides. for example, the Hawaiian and Stromboli.

5 0
3 years ago
In a certain collision we want to increase the force while keeping the magnitude of impulse the same. What can be done to achiev
Alexxx [7]
Impulse = mass * volume is the most common equation, but you can also calculate impulse by Force * time.  So if we increase the force we need to decrease the time.
6 0
3 years ago
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