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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.
Two identical +9.5 uC point charges are initially 3.5cm apart from each other. If they are released at the same instant from rest, how fast will each be moving as they are very far away from each other? Assume they have identical masses of 1 mg.
Find the flux of Earth's magnetic field of magnitude 5.00 cross 10-5 T through a square loop of area 20.0 cm2 for the following when the field is perpendicular to the plane of the loop
A father pulls his son, whose mass is 22.9 kg and who is sitting on a swing with ropes of length 3.21 m, What is the speed of the son at the bottom of the swinging motion
A 4 kg blue ball moves to the right at 6 m/s. A 3 kg red ball moves to the left at 7 m/s. How fast and in what direction is the red ball moving
For exercise, a 60 kg athlete runs up a 10-m high hill in 30 seconds. Assume the efficiency of the human body is 25%. Determine her metabolic power
A 200g mass on the end of a spring is pulled back 3 cm and released. There is a coefficient of friction between the table and mass of 0.7. The resonant frequency is 7.071 rad/sec.
The pendulum pictured above has a length of 15.0 cm when it is displaced to the right of the peg, Determine the period for this pendulum close to the surface of the Earth
The prong of a tuning fork moves back and forth when it is set into vibration. what are the maximum velocity and the maximum acceleration of the prong
An object is launched upward with initial velocity 10.0m/s. What maximum height can it reach
A baseball player hits a triple and ends up on third base. A baseball "diamond" is a square, each side of length 27.4 m, What is the magnitude of the player's displacement
Air expands through a turbine from 10 bars, 900K to 1 bar, 500K. The inlet is small compared to the exit velocity of 100m/s. Calculate the mass flow rate of air
If a particle of mass 4.8 kg is moving east at 10 m/s and a particle of mass 17 kg is moving west at 10 m/s, what is the velocity of the center of mass of the pair
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