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mezya [45]
3 years ago
7

Bulky is working at a UPS loading dock. He boasts he can lift a 154 kg box 4 meters in 30

Physics
1 answer:
ivanzaharov [21]3 years ago
8 0

Answer: Power is 200 W

Explanation: Power P = work done / time used.

P = W/t = mgh/t = 154 kg · 9.81 m/s²· 4 m / 30 s = 201 W

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Noah drops a rock with a density of 1.73 g/cm3 into a pond. Will the rock float or sink? Explain your answer.
wel

Answer:

Sink

Explanation:

The normal density of water is 1 g/cm3.  Since the rock has a higher density of 1.72g/cm3, it will sink in water.

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3 years ago
The following three resistors (Ohms) are in parallel with one voltage source. What is the total current running through circuit?
Zepler [3.9K]

Explanation:

The total resistance Rt is given by

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or Rt = 1.69 ohms

The total current I running through the circuit is

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3 years ago
A stockroom worker pushes a box with mass 11.2 kg on a horizontal surface with a constant speed of 3.30 m/s . The coefIficient o
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Answer:

Explanation:

Mass =11.2kg

Constant velocity =3.3m/s

μk=0.25

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The normal force acting on the body is upward and the weight is acting downward

Then ΣFy=0

Therefore, N=W

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Frictional force is given as

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Fr=0.25×109.76

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Frictional force acting against the motion is 27.44N

Then the forward force moving the body forward

ΣF = Σ(ma)

Since a = 0

Then,

ΣF = 0

F-Fr=0

Then F=Fr

So the force moving the body forward is 27.44N

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3 years ago
1. What do you notice from the picture?<br>2. Did anyone get the correct answer? ​
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Answer:

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When doing scientific research ,the sources used should be ?
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3 years ago
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