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3 years ago

QUESTION 7

Physics

2 answers:

harina [27]3 years ago

8 0

The term used is " WORK".

I'm really sorry it's not one of the choices.

kow [346]3 years ago

4 0

Just to add on to the previous answer, the type of energy that would be responsible for the movement of an object would be mechanical energy. The unit for mechanical energy is the exact same as the unit for work (the joule), meaning that they are very closely related.

Whenever there is an object experiencing work, mechanical energy must be present in order for such work to be done. Mechanical energy relates to both gravitational potential energy and kinetic energy.

AL2006 is correct that the term would be "work", however.

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A solenoid 91.0 cm long has a radius of 1.50 cm and a winding of 1300 turns; it carries a current of 3.60 A. Calculate the magni

irinina [24]

The magnitude of the magnetic field inside the solenoid is $6.46 \times 10^{-3} \ T$ .

The given parameters;

length of the solenoid, L = 91 cm = 0.91 m
radius of the solenoid, r = 1.5 cm = 0.015 m
number of turns of the solenoid, N = 1300
current in the solenoid, I = 3.6 A

The magnitude of the magnetic field inside the solenoid is calculated as;

$B = \mu_0 nI\\\\B = \mu_o(\frac{ N}{L} )I\\\\$

where;

$\mu_o$ is the permeability of frees space = 4π x 10⁻⁷ T.m/A

$B = (4\pi \times 10^{-7}) \times (\frac{1300}{0.91} ) \times 3.6\\\\B = 6.46 \times 10^{-3} \ T$

Thus, the magnitude of the magnetic field inside the solenoid is $6.46 \times 10^{-3} \ T$ .

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2 years ago

How do you find the net force acting on an object?

weqwewe [10]

Answer:

C. Add all the force vectors

Explanation:

The net force acting on an object is the vector sum of all the forces on the object.

Remember, Newton's first law tells us a body at rest will remain at rest or that in uniform motion will continue in motion unless acted by unbalanced forces.These unbalanced forces act in all direction towards the body thus to get the net force you require a summation of all these force with respect to their magnitudes and directions.

For example a force of 3N towards the East direction acting on a body and another force of 2N towards the West direction on the same body will generate a net force of 1N towards the East direction.

4 0

3 years ago

Explain whether smoke filling up a room is diffusion or not

pogonyaev

Yes, it is diffusion !

Diffusion is the process in which gas, through random movement of particles, tends to fill up the whole volume of the container in which it is placed. So a similar process would lead the smoke, which is in form of gas (or light particles), to fill in the whole room in which it is contained.

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3 years ago

After an avalanche, a huge block of stone slid down a mountain and landed in the middle of a road. People in the nearby town had

jeka94

Answer:

Option (C)

Explanation:

From Newton's law of inertia, an object at rest tends to be at rest until there is an external force applied to it.

In the given question, the rock block that fell on the road due to the avalanche contains high mass and high inertia. Due to which the block was not able to move aside. The amount of energy required to push the block aside should be more than the mass of the block. So the block has high inertia value and it will need more force than its inertia value in order to move the block of rock towards the side of the road.

Thus, the correct answer is option (C).

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3 years ago

What portion (division) of a meter stick is a centimeter?

Anastasy [175]

A meter is 100 meters. So a hundredth of a meter stick is a centimeter.

8 0

3 years ago

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