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ankoles [38]
2 years ago
10

Which of the following is equal to 1W?A.1 JB.1 J/sC.1 J·sD.1 N·m

Physics
1 answer:
Ray Of Light [21]2 years ago
7 0
B. Extra text to get to 20 characters.
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A ball is dropped from an upper floor, some unknown distance above your apartment. As you look out of your window, which is 1.50
Lelechka [254]

Answer:1.902 m

Explanation:

Given

height of apartment=1.5 m

It takes 0.21 sec to reach the bottom from apartment

So

s=u_1t+\frac{gt^2}{2}

1.5=u_1\times 0.21+\frac{9.81\times 0.21^2}{2}

u_1=6.11 m/s

i.e. if ball is dropped from top its velocity at window is 6.11 m/s

So height of upper floor above window

v^2-u^2=2as

where s= height of upper floor above window

here u=0

6.11^2=2\times 9.81\times s

s=\frac{6.11^2}{2\times 9.81}

s=1.902 m

5 0
3 years ago
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Nataliya [291]

Answer:

B and D is the answer

Explanation:

I took the assignment <3

3 0
2 years ago
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A spring has a spring constant of 330 n/m. how far is the spring compressed when 150 newtons of force are used?
vitfil [10]

Answer:

b. 0.45 meters

Explanation:

Given the following data;

Spring constant, k = 330 N/m

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Force = spring constant * extension

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150 = 330 * extension

Extension, e = 150/330

Extension, e = 0.45 meters

7 0
2 years ago
the tallest man made structure At present is theWarszawa radio massin Warsaw Poland.This radio mast rises 646m above ground near
PtichkaEL [24]

All of that fluff at the beginning is interesting, but completely irrelevant
to the question.  The question is just asking for the mass of an object
that weighs 3.6N on Earth.

                           Weight = (mass) x (acceleration of gravity)

                              3.6N = (mass) x (9.8 m/s²)

Divide each side
by  9.8 m/s :           Mass = 3.6N / 9.8 m/s² = <em>0.367 kilogram</em> (rounded)


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3 years ago
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xenn [34]

Answer: 4 herz is the answer!

Explanation:

6 0
2 years ago
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