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A sled weighing 61.0 N is pulled horizontally across snow so that the coefficient of kinetic friction between sled and snow is 0.100. A penguin weighing 67.0 N rides on the sled, as in the figure below. If the coefficient of static friction between penguin and sled is 0.700, find the maximum horizontal force that can be exerted on the sled before the penguin begins to slide off.
A diver springs upward with an initial speed of 7 m/s from a diving board that is 2 m above the water. Find the total time the diver is airborne
a 2.00 kg frictionless block is attached to an ideal spring with force constant 315 N/m. initially the spring is neither stretched nor compressed, find the maximum force the spring exerts on the block
Here in Boulder, normal atmospheric pressure is NOT 1 atm (that's down at sea level) Let's call it 0.850 atm on a given day. what is the amplitude of the pressure wave
When one gallon of gasoline is burned in a car engine, 1.19 x 108 J of internal energy is released. how many miles can the car travel on one gallon of gas
A positive image distance means that image is formed on the side of the lens from which the light emerges.
A beam of neutral hydrogen atoms with a speed of 104 m/s along the x-axis enters a 1 m long region, compute The acceleration of the atoms while in the magnetic field region
A solenoid 10.0 cm in diameter and 65.8 cm long is made from copper wire of diameter 0.100 cm, with very thin insulation. What power must be delivered to the solenoid
An airplane flying directly eastward at a constant rate travels 305 km in 2.0 h. What is the average velocity of the plane
How much time does the ball spend in the air. What is the longest "hole in one" that the golfer can make, if the ball does not roll when it hits green.
A soccer player kicks the ball toward a goal that is 21.0 m in front of him. Find the speed of the ball when the goalie catches it in front of the net
A car drives over a hilltop that has a radius of curvature 120 m at the top of the hill with a speed of 20.0m/s. What is the normal force felt by the car tires
Two equally charged particles are held3.2x10 -3 m apart and then released from rest. determine the mass of the second particle
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