All categories

3 years ago

If an appliance is plugged in but the switch is OFF, the electrician should always consider the appliance as

Physics

1 answer:

Nina [5.8K]3 years ago

8 0

A. Because there is still electricity going through the appliance even though it's turned off

You might be interested in

A 6.0-kg object, initially at rest in free space, "explodes" into three segments of equal mass. Two of these segments are observ

sladkih [1.3K]

Answer:

$Q = 2000 J$

Explanation:

As we know that the 6 kg object was at rest initially

So here since net force on the system is zero

so the momentum of the system will always remains conserved

so we can say

$0 = P_1 + P_2 + P_3$

now we know that

$P_1 = P_2 = P$

and the angle between the two objects is 60 degree

so we can say

$\vec P_1 + \vec P_2 = \sqrt{P_1^2 + P_2^2 + 2P_1 P_2cos60}$

$\vec P_1 + \vec P_2 = \sqrt{P^2 + P^2 + 2P^2(0.5)} = \sqrt3 P$

now we can say that the speed of the third mass will be

$v_3 = \sqrt 3 (20) m/s$

now the total kinetic energy released in this system is given as

$Q = \frac{1}{2}mv_1^2 + \frac{1}{2}mv_2^2 + \frac{1}{2}mv_3^2$

$Q = \frac{1}{2}(2)(20^2) + \frac{1}{2}(2)(20^2) + \frac{1}{2}(2)(20\sqrt3)^2$

$Q = 2000 J$

3 0

4 years ago

A box is on a ramp that is at angle θ to the horizontal. As θ is increased from zero, and before the box slips, do the following

KIM [24]

The correct answer for the question that is being presented above is this one: "(d) the magnitude of the normal force on the box from the ramp." A box is on a ramp that is at angle θ to the horizontal. As θ is increased from zero, and before the box slips, do the following increase, decrease, or remain the same and the magnitude of the normal force on the box from the ramp.

4 0

3 years ago

What's impulse of force

vekshin1

Answer:

The impulse experienced by the object equals the change in momentum of the object. In equation form, F.t = m. Δv. In a collision, objects experience an impulse; the impulse causes and is equal to the change in momentum.

6 0

3 years ago

Question 6 of 10

madreJ [45]

Answer:

The answer is "Choice B and Choice C".

Explanation:

In this question, the two features, which make electromagnetic waves effective for interaction, which they don't really need a method of travel of data and move information quite fast. The motion among magnetic and electrical forces is generated by electromagnetic radiation. These waves will spread without the need for a source for their movement, and they have high speed and also the electromagnetic waves it has the same frequency as light.

8 0

3 years ago

In most cases, letters of reconmendation are required for addmission to?

kykrilka [37]

Answer:

Get your recommenders to mention diverse achievements. ...

Help your recommenders with relevant info. ...

The letter should always include examples of things you did. ...

The letter should show how you improved over time. ...

The tone of the letter should not be too dry.

8 0

3 years ago