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3 years ago

To protect a material from the influence of an external magnetic field, the material should be kept in?

1 answer:

5 0

To protect a material from the influence of an external magnetic field, the material should be kept in soft iron ring.

So the correct answer is A.

Hope this helps,

Davinia.

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Can someone who knows how to do physics please answer this

Serhud [2]

Answer:

about 3.17647 hours

Explanation:

The appropriate relation is ...

time = distance/speed

time = (270 km)/(85 km/h) = 3 3/17 h ≈ 3.17647 h

It will take Derek about 3.17647 hours to drive the distance.

5 0

3 years ago

Read 2 more answers

The capacitance of a capacitor depends on what?

bonufazy [111]

Answer:

The capacitance of a capacitor depends on the charge and voltage of a system. It is also dependent, if present, on the dielectric as well.

General Formulas and Concepts:
Gauss's Law

Capacitance Formula: $\displaystyle C = \frac{Q}{V}$

Q denotes charge
V denotes voltage

Dielectric Capacitance Formula: $\displaystyle C = \kappa C_0$

C₀ denotes original capacitance
κ denotes the dialectic constant

Explanation:

A capacitor stores charge when run through an electrical current. The capacitance is how much charge a capacitor can hold.

We can define the relationship of capacitance by using the formula. Capacitance is inversely proportional to the potential energy, or voltage, of the system. Therefore, you will need to know what the charge Q of the system as well has voltage V in order to find the capacitance.

If there is a dielectric involved inside the capacitance, you also must incorporate the value of the dielectric constant into your capacitance. A dielectric is directly proportional to the capacitance; the bigger the dielectric constant, the bigger capacitance, as denoted in our equation.

Topic: AP Physics C - EMAG

Unit: Gauss's Law

5 0

2 years ago

A blank is used to control the temperature in a room, please help

kow [346]

Thermostat is used to control the temperature in a room

3 0

3 years ago

Read 2 more answers

Suppose you want to search for brown dwarfs using a space telescope. Will you design your telescope to detect light in the ultra

Lisa [10]

Answer:

infrared part of the spectrum

Explanation:

brown dwarfs are relatively cool and have temperatures of about 2000 K emitting their light in the infrared and practically none in the ultraviolet part of the spectrum.

3 0

4 years ago

A 1100 kgkg safe is 2.4 mm above a heavy-duty spring when the rope holding the safe breaks. The safe hits the spring and compres

Drupady [299]

Answer:

191.36 N/m

Explanation:

From the question,

The Potential Energy of the safe = Energy of the spring when it was compressed.

mgh = 1/2ke²............... Equation 1

Where m = mass of the safe, g = acceleration due to gravity, h = height of the save above the heavy duty spring , k = spring constant, e = compression

Making k the subject of the equation,

k =2mgh/e²................ Equation 2

Given: m = 1100 kg, h = 2.4 mm = 0.0024 m, e = 0.52 m

Constant: g = 9.8 m/s²

Substitute into equation 2

k = 2(1100)(9.8)(0.0024)/0.52²

k = 51.744/0.2704

k = 191.36 N/m

Hence the spring constant of the heavy-duty spring = 191.36 N/m

3 0

3 years ago