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Q1. 150 grams of boiling water (temperature 100 C, heat capacity 4.2 J/gram/K) are poured into an aluminum pan whose mass is 870 grams and initial temperature 22 C (heat capacity of aluminum is 0.8 J/gram/K). After a short time, what is the temperature of water?
Q2. A rifle with a barrel length of 56 cm fires a 14 g bullet with a horizontal speed of 350 m/s/s. The bullet strikes a block of wood and penetrates to a depth of 13 cm.
How long does it take the bullet to come to rest?
What is an acceleration of two falling sky divers (mass 100.0 kg including parachute) when the upward force of air resistance is equivalent to one-fourth of their weight. How fast would the father be moving.
A 3.3 block of wood sits on a table. A 3.0 bullet, fired horizontally at a speed of 480, goes completely through the block, emerging at a speed of 200 .What is the speed of block immediately after the bullet exits.
How much heat energy can created throughout motion
What is a density of the block
Find out the altitude of the plane
What is an average speed of the runner
What is wind velocity
A dockworker applies a constant horizontal force of 79.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 15m in a time 4.50s. What is the mass.
What is the effect of thermal insulation on cooling
A spring with spring constant 14 hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 3.0 and released. The ball makes 17 oscillations in 16 seconds. What is it the mass of ball.
The magnitude of the acceleration due to gravity
Find out the angular velocity
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