Explanation:
<h2>Speed is the rate of change of distance with time.</h2>
What a great photo ! The answer is 'diffraction'.
It takes the spoon 5.38 seconds to transfer 25 j of heat energy to your hand.
Heat energy is created by the movement of tiny atoms, molecules, or ions in solids, liquids, and gases. It is possible to transfer heat energy from one thing to another. Heat is a flow or transfer that happens when two objects have different temperatures from one another.
Convection is the process of transferring heat through gases and liquids. The particles in heated air absorb heat energy, allowing them to move faster and farther apart while carrying the heat energy. Because warm air is less dense than cold air, it rises.
Cooler air rising from below replaces the air that has risen. When warm air rises and is again replaced by colder air, a convection current is created.
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Answer:
The ratio of the forces is F2/F1 = 1.86
Explanation:
From Newton's second law applied to circular motion, the total force F acting on a body in circular motion is given by
F = mv²/r
Where
m = mass of the body undergoing circular motion
v = linear velocity = ω×r
ω = angular velocity
r = radius of the circular path through which the force acts
So
F = m(ω×r)²/r = mω²×r
Given 2 angular speeds ω1 = 439re/min = 439×2π/60 rad/s = 46 rad/s and
ω2 = 602rev/min = 602×2π/60 rad/s = 63 rad/s
Required to calculate the ratio F2/F1
The mass m and radius r is the same for both forces, so F is dependent on the angular speed
So F2/F1 = ω2²/ω1² = (ω2/ω1)²
F2/F1 = (63/46)² = 1.86