3 years ago

Power is calculated by multiplying voltage by

Physics

1 answer:

Masja [62]3 years ago

7 0

Answer:

Explanation:

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A person approaches a flat mirror at a speed of 0.25 m / s. How fast is he approaching his image?

Bezzdna [24]

Flat mirror is given here
We know that in a flat mirror the distance of object from the mirror is equal to distance of image from the mirror i.e v=u
Only the side of image changes ime left is seemed right.

So the speed remains same 0.25m/s.

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3 years ago

During a race, a dragster is 200m from the finish line when something goes wrong and it stops accelerating. It travels at a cons

GarryVolchara [31]

Answer:

135 m

Explanation:

Speed = 45 m/s, time = 3 second

The formula for the distance is given by

Distance = speed x time = 45 x 3 = 135 m

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3 years ago

A car traveling at 30 m/s drives off a cliff that is 50 meters high? How far away does it land?

Semenov [28]

Answer:

The maximum range $R_{max}= 132. 72$ m

Explanation:

Given,

The initial velocity of the car, u = 30 m/s

The height of the cliff, h = 50 m

Let the car drives off the cliff with a horizontal velocity of 30 m/s.

The formula for a projectile that is projected from a height h from the ground is given by the relation

$R_{max}= \frac{u}{g}\sqrt{u^{2} + 2gh }$ m

Where,

g - acceleration due to gravity

Substituting the values in the above equation

$R_{max}= \frac{30}{9.8}\sqrt{30^{2} + 2X9.8X50 }$

= 132.72 m

Hence, the car lands at a distance, $R_{max}= 132. 72$ m

3 0

4 years ago

What is the voltage of a motor that draws a current of 2 a and produces 240 w of power?

MA_775_DIABLO [31]

Here Power = Voltage * Current

So, Voltage = Power/Current

Put the values,

V = 240/2

V = 120 V

In short, Your Final Answer would be: 120 Volts

Hope this helps!

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4 years ago

How can you relazie a perfect balck body in pratice

Mazyrski [523]

A perfect black body can’t be realized

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3 years ago