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NemiM [27]
2 years ago
13

Science assessment help pls

Physics
2 answers:
AURORKA [14]2 years ago
5 0

Answer:

Solution

The work done by the force is

WF = F d cosθ

But the force and displacement are parallel; the angle between them is zero.

Therefore WF = F d = 3.5 x 4= 14 J

Explanation:

Download docx
DENIUS [597]2 years ago
3 0

Answer:

Work Done = W

force = F

Distance = d

W = Fd

or W = F*d

W (in joules) = 3.5*4 = 14 Nm (or J)

1Nm = 1J

so newton meters and joules are the same

Power = Work (in joules) /time (in seconds)

i don’t know the time so i can’t solve it

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Stolb23 [73]

Answer:

r= 98.3 mm

Explanation:

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Now by putting the values

I=4.32\times 0.209^2+2\times \dfrac{1}{12}\times 7.73\times 0.418^2\ kg.m^2

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For disk:

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3 years ago
Light of a given wavelength is used to illuminate the surfacce of a metal, however, no photoelectrons are emitted. In order to c
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Answer:

B. use light of a shorter wavelength.

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Answer:

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