Answer:
c. wood is the corrected answer
The centripetal force : F = 293.3125 N
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Further explanation
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Given
mass = 65 kg
v = 9.5 m/s
r = 20 m
Required
the centripetal force
Solution
Centripetal force is a force acting on objects that move in a circle in the direction toward the center of the circle
F = centripetal force, N
m = mass, Kg
v = linear velocity, m / s
r = radius, m
Input the value :
F = 65 x 9.5² / 20
F = 293.3125 N
The answer is B.
hope this helps!
Gravitational force depends on inverse square law. That is, gravitational force is inversely proportional to square of distance between asteroids.
As distance between them decreases, gravitational force increases. Hence A is correct.
Answer:
Explanation:
Heat lost by hot slug = gain gained by water
If we take that equilibrium temperature be boiling point is 100°C
Heat gained by water = 85 x 10⁻³ x 4.2 x 10³ x ( 100 - 20 )
= 28560 J
Heat lost by slug
= 120 x 10⁻³ x 460.55 x (745-100)
= 35646.570 J
So some water will be evaporated . Let it be m kg
35646.570 = 28560 + m x 2268 x 10³
m = 3.12 x 10⁻³ kg
= 3.12 g
3.12 g of water will be evaporated .
final mass = 120 + 85 - 3.12
= 201.88 g
= 202 g