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2 years ago

You pull a wagon 50M with a 8N force at a 40 degree angle. How much work is done?

Physics

1 answer:

BabaBlast [244]2 years ago

4 0

Answer:

306.4J

Explanation:

Given parameters:

Displacement = 50m

Force = 80N

Angle = 40°

Unknown:

Work done = ?

Solution:

Work done is the force applied to move a body through a certain distance.

Work done = Force x displacement cos Ф

Work done = 8 x 50 cos 40 = 306.4J

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Answer:

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3 years ago

Assume that the radius ????r of a sphere is expanding at a rate of 70 cm/min.70 cm/min. The volume of a sphere is ????=43???????

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Answer:

the rate of change in volume with time is 280πr² cm³/min

Explanation:

Data provided in the question:

Radius of the sphere as 'r'

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Volume of the sphere, V = $\frac{\textup{4}}{\textup{3}}\pi r^3$

Surface area of the sphere as 4πr²

Now,

Rate of change in volume with time, $\frac{d\textup{V}}{\textup{dt}}$

= $\frac{d(\frac{\textup{4}}{\textup{3}}\pi r^3)}{dt}$

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3 years ago