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A child goes down a playground slide with an acceleration of 1.26m/s2. Estimate coefficient of kinetic friction between child and slide if the slide is inclined at an angle of 33.0o below the horizontal.
A fire truck siren produces a steady single tone of frequency 500 Hz when at rest. When the fire truck is at rest
An ideal monatomic gas expands adiabatically from an initial temperature of 368 K and volume of 4.6 m3 to a final volume of 11 m3. If the initial pressure is 1.5 multiplied by Patm, how much work is completed on the gas.
Two protons are located on the x-axis at 1.0m and on the y-axis at 1.5m. Determine the electric potential energy of a third proton located at the origin
a 110kg linebacker tackles an 85kg halfback. immediately before the collision the linebacker is slipping with a velocity of 8.8 m/s north and the halfback is sliding with a velocity of 7.2m/s east. what is the velocity at which the two players move t..
a teenager of mass m1 100 kg pushes backward against the ground with his foot as he rides his skateboard. this exerts
two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring-loaded gun that is mounted on a table. How far should Rhoda compress the spring to score a direct hit
During a ride on the gravitron, a person finds herself stuck against the wall as she spins around with a frequency of 26.00 rpm, What is the diameter of the gravitron ride
Illustrate what is the average power of the elevator motor during this period? How does this amount of power compare with its power during an upright trip with constant speed?
Ice of mass 48.5 g at -10.3° C is added to 188 g of water at 14.2° C in a 108 g glass container of specific heat 0.200 cal/g-°C, obtain the final temperature of the system
a freezer is used to freeze 3.0 l of water completely into ice. the water and the freezer remain at a constant
A cylindrical glass of water (H2O) has a radius of 4.61 cm and a height of 12.5 cm. How many moles of water molecules are contained in the glass
water skiers often ride to one side of the center line of a boat as shown in the figure . in this case the ski boat is
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