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Kaylis [27]
3 years ago
9

A boy weighs 50 kg and is running with 225 J of energy, what is his velocity?

Physics
2 answers:
Oksanka [162]3 years ago
8 0

0.22

Explanation:

50 ÷ 225 = 0.22

<u>#CarryOnLearning</u>

Natali [406]3 years ago
8 0
0.22 Is the answer. Have a great day!
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A bicyclist travels 4.5 km west, then travels 6.7 km at an angle 27.0 degrees South of West. What is the magnitude of the bicycl
Dimas [21]

Answer:

<em>10.90km</em>

Explanation:

Magnitude of the total displacement is expressed using the equation

d = √dx²+dy²

dx is the horizontal component of the displacement

dy is the vertical component of the displacement

dy = -6.7sin27°

dy = -6.7(0.4539)

dy = -3.042

For the  horizontal component of the displacement

dx = -4.5 - 6.7cos27

dx = -4.5 -5.9697

dx = -10.4697

Get the magnitude of the bicyclist's total displacement

Recall that: d = √dx²+dy²

d = √(-3.042)²+(-10.4697)²

d = √9.2538+109.6146

d = √118.8684

<em>d = 10.90km</em>

<em>Hence the magnitude of the bicyclist's total displacement is 10.90km</em>

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6 0
2 years ago
An engine converts 95% of its energy to mechanical. What happens to the other 5% of its energy?
Elza [17]

Answer:

Here, 5% of energy wasted as a heat lost or work done against frictional forces.

Explanation:

No engine has yet made that can convert its all input energy into mechanical energy. Some of the input energy goes in vain in the form of heat and friction.

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Answer:

What are the options?

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Toy car goes 2 meters in 3.1 seconds, find the average speed?
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