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The polar ice caps contain about 2.3×?10?^19 kg of ice. This mass contributes negligibly to the moment of inertia of Earth because it is located at the poles, close to the axis of rotation. Estimate the change in the length of the day that would be expected if the polar ice caps were to melt and the water were distributed uniformly over the surface of Earth.
A child throws a snowball over a wall. The horizontal distance which the snowball travels is 3.83 m. Determine the initial speed of the snowball
Two soccer players start from rest, 47 m apart. They run directly toward each other, both players accelerating. How much time passes before the players collide
An airplane undergoes the following displacements
The Calorie (or kcal) is another energy unit and is commonly used to measure food energy (as well as heat). How many Calories would you burn walking up a flight of stairs for an hour
A 45-kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 25 degrees , At what angle does the crate begin to slide
A model airplane with mass of 0.754 kg is tethered by a wire so that it flies in a circle 29.5m in radius. The airplane engine provides a net thrust of 0.796 N perpendicular to tethering wire.
Illustrate what is the difference between a departmental accounting system and a responsibility accounting system? Are the reports of departmental net income and the departmental contribution to overhead useful in assessing a department manager's ..
An 52.0 N box of clothes is pulled 6.7 m up a 30.0° ramp by a force of 107 N that points along the ramp. If the coefficient of kinetic friction between the box and the ramp is 0.22, compute the change in the box's kinetic energy.
If it takes 3 golf balls to equal the mass of one tennis ball, what weight of tennis balls do you require equalling the number of golf balls in one kilogram of golf balls.
The supersonic aircraft Concorde has a length of 63.0 when sitting on the ground on a typical day when the temperature is 16.0. What is the temperature of the Concorde's skin in flight
michael hits a 45.9 g golf ball traveling 56.0 m/s at an angle 60 degree north of east and splits into three pieces. what is the velocity of the third piece
A proton is shot at 8 × 107 m/s toward a gold atom, with a mass 197 times that of the proton, What is the recoil speed of the gold nucleus
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