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Temka [501]
2 years ago
9

If a 15 N box is lifted a distance of 3 m, how much work is done?

Physics
2 answers:
Naily [24]2 years ago
7 0

Answer:

W=45J

Explanation:

W=Fd

W=15(3)=45

W=45J

Oxana [17]2 years ago
5 0

Answer:

work done = 45 j

Explanation:

work done ( W.D ) = force × displacement

=》W.D = 15 N × 3 m = 45 joule

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A string under a tension of 36 N is used to whirl a rock in a horizontal circle of radius 3.6 m at a speed of 16.12 m/s. The str
ExtremeBDS [4]

Answer:

6010.457N

Explanation:

Centripetal acceleration = a= V²/R

At a radius of 3.6m and velocity of 16.12m/s,

Acceleration is

a = 16.12²/ 3.6 = 72.182 m/s²

Force = Mass (m) * Acceleration (a)

36 = m * 72.182

m = 36/72.182

At breaking point

Radius = 0.468 m and Velocity = 75.1 m/s

a = V²/R = 75.1²/0.468

a = 12051.3 m/s

F = Mass(m) * Acceleration (a)

F = m * 12051.3

m = F/ 12051.3

Settings the ratio of mass equal

m = m

=> 36/72.182 = F/12051.3

F = 12051.3 * 36/72.182

F = 6010.457N

3 0
3 years ago
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Answer:We have , a relation in frequency f and wavelength  λ of a wave having the velocity v as ,

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3 years ago
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I don't know if you need to complete this question or do it otherwise, however, I managed to find on the Internet on several places this completion of your sentence:
<span>Electric current flows through a long rod generating thermal energy at a uniform volumetric rate of q = 2 x 10</span>⁶ W/m³. 
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