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Effectus [21]
4 years ago
11

Which device is using a motor? A. A water heater creates heat energy from electric energy. B. A waterfall rotates a waterwheel t

o turn an axle. C. A body massager uses electric energy to move back and forth. D. A solar charger creates electric energy from the Sun.
Physics
1 answer:
Mumz [18]4 years ago
4 0

Answer:

C is the right answer.

Body massager uses electrical energy to move back and forth. In this sense, a motor is being used for the operation

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4 years ago
One horsepower is a unit of power equal to 746 W. How much energy can a 150-horsepower engine transform in 10.0 s?
Lelu [443]

Answer:

E = 1119000\ joules

Explanation:

Given:

1\ Hp = 746\ watt

time (t = 10.0 sec)

power = 150 Hp

We need to find the energy transformed by a 150 Hp engine in 10 s.

Solution:

First we convert 150 Hp in watt.

1\ Hp = 746\ watt

150\ Hp = 150\times 746\ watt

150\ Hp = 111900\ watt

So, power (p = 111900 watt)

We know that, if we multiply power by time, we get energy transform by engine.

P = \frac{E}{t}

E = P\times t\ joule  -----------(1)

Where:

P ⇒ power.

E ⇒ Energy.

t ⇒ time.

Substitute p = 111900 watt and t = 10 s in equation 1.

E = 111900\times 10

E = 1119000\ joules

Therefore, a 150 Hp engine could transform 1,119,000 joules energy  in 10 s.

4 0
3 years ago
What happens if someone walks between you and the heater? Can you still feel its warmth?
Pie
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6 0
4 years ago
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you leave your house and travel for 6 minutes at an average velocity of 5 m/s. How far have you traveled?​
Anvisha [2.4K]

Answer:

1800 m

Explanation:

This question requires you to calculate the distance traveled after 6 minutes at a speed of 5m/s

Given speed as 5m/s and time is 6 minutes then;

Change minutes to seconds by multiplying the minutes by 60 seconds

1 minute=60 seconds

6 minutes= 6*60 = 360 seconds

Apply the formula for speed where;

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To get D , rewrite formula as S*T

where S= 5m/s and T=360s

D= 5*360 =1800m

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4 years ago
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Answer: Qualifying as an Olympian is an extremely difficult feat for anyone to accomplish and is regarded as a very prestigious title. To qualify as a Paralympian is an even tougher challenge. ForParalympic athletes, the sports in which Olympians compete are harder to do, harder to train for, and pose challenges that would prove nearly impossible for a fully able-bodied person to overcome. The disparity in level of difficulty between the same sports in Olympics and Paralympics was evident to me when watching the events. Whether skiing down a mountain, swimming, or playing on ice, Paralympic athletes must demonstrate a higher level of skill in order to succeed in their respective event.

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