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A 0.1 Kg hockey puck slows down from 45 m/s to 44 m/s due to friction as it slides 25m across the ice. a) Draw a free body diagram showing all the forces on the puck b)using the work-energy relationship, find the work done by the frictional force. c)What is the coefficient of kinetic friction between the ice and puck? please show formulas
You are pushing a 150-kg wooden crate in a straight line a distance of 4.5 m across a wooden floor at constant speed. What is the work done by friction on the crate
Starting from rest, a 4.10-kg block slides 2.6 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436, Determine the work done by normal force
When you lift a bowling ball with a force of 80.2 N, the ball accelerates upward with an acceleration a. Calculate the weight of the bowling ball
An aluminum-alloy rod has a length of 10.008 cm at 16.400°C and a length of 10.020 cm at the boiling point of water. (a) What is the length of the rod at the freezing point of water
A transverse wave on a string has an amplitude of 0.223 m and a frequency of 194 Hz. How much time passes between the first two instants when this particle has a displacement of y = 0.114 m
A 41.4-cm diameter disk rotates with a constant angular acceleration of 2.30 rad/s2. Find the angular speed of the wheel
You and your friends find a rope that hangs down 18m from a high tree branch right at the edge of a wide river. How long must you hang on if you want to stay dry
A loudspeaker at a rock concert generates 10-2 W/m2 at 22.0 m at a frequency of 1.0 kHz. Assume that the speaker spreads its energy uniformly in three dimensions. What is the total acoustic power output of the speaker
Gasoline is made up of hydrocarbons. Suppose 80% of mass of gasoline is carbon and all of this becomes CO2 in combustion. If the density of gasoline is 6.7 lb/gal, how much CO2 is emitted per gallon of gasoline burned? The atomic mass of carbon is 12..
A flat sheet of crystalline quartz has a thickness of 1.6 cm. It is on top of the flat sheet of diamond that has a thickness of 2.10 cm. Light strikes the crystalline quartz perpendicularly and travels through it and then throughout the diamond.
A 440-turn solenoid is 30 cm long and 1.1 cm in diameter and carries 57 mA. How much magnetic energy does it contain
A uniform circular disk has radius 35 cm and mass 350 g and its center is at the origin. Then a circular hole of radius 8.75 cm is cut out of it. Find the moment of inertia of the modified disk about the Z-axis
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