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3 years ago

this is a multiple select question

1 answer:

6 0

When you fly through the trososphere into the stratosphere you would expect to have the temperature remain constant and the temperature would stop decreasing

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In an experiment, a torque of a known magnitude is exerted along the edge of a rotating disk. The disk rotates about its center.

lisabon 2012 [21]

Answer:

B) The amount of time the torque is applied to the disk, because the time interval is related to the angular impulse of the disk.

Explanation:

Angular impulse = Torque x time

= change in angular momentum

So,

Torque x time = change in angular momentum

change in angular momentum = Torque x time

Torque is already known .

Hence to know the change in angular momentum what is needed to know is time duration of torque acting on the body .

3 0

3 years ago

What net external force is required to give a 25 kg suitcase an acceleration of 2.2 m/s2 to the right?

lapo4ka [179]

Answer:

there are two way to get mate and i gave them sepaert explation

Explanation:

Explanation:

Using Newton's second law of motion:

Force=mass

acceleration

2.2

So 55 Newtons are needed.

Answer link

Nam D.

Apr 6, 2018

Explanation:

We use Newton's second law of motion here, which states that,

is the mass of the object in kilograms

is the acceleration of the object in meters per second

⋅

2.2

m/s

3 0

2 years ago

Which of Newton’s Laws explains why an object originally moving in a circular path will continue in a straight line path if the

Andreas93 [3]

When object is moving in circular path then if suddenly its force reduced to zero then it will move to straight line

This is defined by Newton's First Law

So as per first law of Newton we can say

When there is no net force on an object then it will continue its state of motion in its original state without any change in it.

This is also known as law of inertia

so correct answer will be

Newton's 1st law

6 0

3 years ago

Why do people act rude towards their supervisors

faltersainse [42]

Because people do not like being told what to do.

8 0

3 years ago

Usually wire resistance can be neglected. But we see the effect of it sometimes when a light dims as another high-current device

tangare [24]

Please find the figure attached below:

Answer:

a.Resistance of bulb= $R_{2}$ =192 ohm

b.power consumed by bulb after motor disconnection=74.609 W

Explanation:

a.Resistance of bulb= $R_{2}$ =?

As we know that $P=\frac{P^{2} }{R}$

putting R as resistance of bulb i.e. $R=R_{2}$

$P=\frac{V^{2}}{R_{2} }\\R_{2}=\frac{V^{2}}{P} \\ R_{2}=\frac{(120)^{2} }{75}\\ R_{2}=192ohm$

b.power consumed by bulb after motor disconnection?

from the figure we see that $R_{1}\ and\ R_{2}$ are in series so

$R_{eq}=R_{1} +R_{2} \\R_{eq}=192+0.5\\R_{eq}=192.5ohm$

current through their resistance is

$I_{eq}=\frac{V}{R_{eq} }\\ I_{eq}=\frac{120}{192.5 } \\I_{eq}=0.6233A$

Power consumed by bulb is

$P_{b} =I^{2}R\\\\ P_{b} =(0.6233)^{2}(192)\\\\P_{b} =74.609W$

3 0

3 years ago

*this is a multiple select question*

this is a multiple select question