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White raven [17]
3 years ago
5

A 10,000 W motor operates an elevator weighing 5000 N. Assuming no frictional losses, how high is the elevator raised in 10 seco

nds.
Physics
1 answer:
PSYCHO15rus [73]3 years ago
5 0

Answer:

20 meters

Explanation:

Given that

Power of the motor, P = 10,000 Watts

Weight of the motor, w = 5,000 Newton

Time used in raising the elevator, t = 10 seconds.

Height the elevator was raised through, h = ?

To find this, we're going to use simple relationship between them all.

Say, we find the power to weight ratio which is, Power / Weight

10,000 / 5,000 = 2

This power to weight ratio is then multiplied by the time used in moving the elevator to get the distance through which it moved.

2 * 10 = 20 meters.

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SCORPION-xisa [38]

Answer:

it is called arachnophobia

Explanation:

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4 0
2 years ago
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WHAT WILL BE YOUR CONCLUSI0N ABOUT ELECTROMAGNETIC WAVE
andrezito [222]

Answer:

It's really important waves type for fulfill human's needs

Explanation:

Electromagnetic waves are transverse waves composed by the perpendicular oscillating electric and magnetic fields.

EM waves have both Electrical and magnetic features.

they travel in the velocity of light (3*10⁸ ms⁻¹)

they does not require any media to travel. It has two perpendicular electric field and the magnetic field which are perpendicular to each other

They travel perpendicular to each of those electric and magnetic fields.

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8 0
3 years ago
A highway curves to the left with radius of curvature of 36 m and is banked at 28 ◦ so that cars can take this curve at higher s
iVinArrow [24]

Answer: 30.34m/s

Explanation:

The sum of forces in the y direction 0 = N cos 28 - μN sin28 - mg

Sum of forces in the x direction

mv²/r = N sin 28 + μN cos 28

mv²/r = N(sin 28 + μcos 28)

Thus,

mv²/r = mg [(sin 28 + μ cos 28)/(cos 28 - μ sin 28)]

v²/r = g [(sin 28 + μ cos 28)/(cos 28 - μ sin 28)]

v²/36 = 9.8 [(0.4695 + 0.87*0.8829) - (0.8829 - 0.87*0.4695)]

v²/36 = 9.8 [(0.4695 + 0.7681) / (0.8829 - 0.4085)]

v²/36 = 9.8 (1.2376/0.4744)

v²/36 = 9.8 * 2.6088

v²/36 = 25.57

v² = 920.52

v = 30.34m/s

5 0
3 years ago
Which of the following is not an example of work being done on an object?
IrinaVladis [17]

Answer:

Lifting a bag of groceries

6 0
2 years ago
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When the wedges are removed, the cars will move. Predict which direction they will move and when they will stop
Neko [114]

Answer: hello your question lacks the required diagram attached below is the required diagram

answer : Both cars will move backwards and stop due to friction.

Explanation:

Given that both cars are negatively charged, When the wedges are removed both cars will move backwards ( repelling each other ) because they are like poles, and Like poles repel each other. while unlike poles attract each other ( forward movement )  .

The cars will later come to a stop due to frictional forces between the cars and the surface.

6 0
3 years ago
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