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GREYUIT [131]
3 years ago
5

What is the moment of inertia of a disc of mass 5kg and radius 10cm?

Physics
2 answers:
vodka [1.7K]3 years ago
6 0

Answer:

500

Explanation:

Lelu [443]3 years ago
3 0
I=1/2MR²
I=1/2(5 kg)(0.1 m)²
I=0.025 kg/m²
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3 years ago
Which refers to any disturbance that carries energy from one place to another through matter and space?
Black_prince [1.1K]
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4 0
2 years ago
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How long would it take a 4,560 watt motor to raise a 166 kg piano to an apartment window
IrinaK [193]

Answer:

Explanation:

We need the power equation here:

P = W/t where W is work and is defined as

W = F*displacement.

Force is a measure in Newtons, which is also weight. We have the mass of the piano, but we need to find the weight:

w = mg so

w = 166(9.8) so

w = 1600N, rounded to the correct number of sig dig. We use that now in the power equation:

4560=\frac{(1600)(15)}{t} and isolating the unknown:

t=\frac{(1600)(15)}{4560} so

t = 5.3 seconds

8 0
3 years ago
What is the amount of work done when a force of 10N moves a 20kg mass of 8 meters?
Nataly_w [17]

Yo sup??

we should know that

work done=force*displacement

W=F.s

F=10 N

s=8 m

therefore

W=10*8

=80 N

Hope this helps.

3 0
2 years ago
An object with a mass of 375g is moving with a constant velocity. It has a force of -20 N applied to it. Determine the accelerat
olga55 [171]

Answer:

Explanation:

Convert the mass to kg:

375g = 375/1000kg = 0.375kg

F = ma

-20 = 0.375a

a = -20/0.375

a = -53

The object is accelerating at 53m/s/s backwards assuming that the forward motion is positive.

8 0
3 years ago
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