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In the amusement park ride known as Magic Mountain Superman,powerful magnets accelerate a car and its riders from rest to31 m/s (around 70mi/h) in a time of 6.4 s. The mass of thecar and riders is 4100 kg. Find the average net force exerted on the car and riders by the magnets.1__________ NWhen a parachute opens, the air exerts a large drag force on it.This upward force is initially greater than the weight of the skydiver and, thus, slows him down. Suppose the weight of the skydiver is 902 N and the drag force has amagnitude of 1030 N. The mass of the skydiver is 92.0 kg. What are the magnitudeand direction of his acceleration?magnitude ___ ______________ m/s2A bowling ball (mass = 7.2 kg, radius = 0.12 m) and a billiard ball (mass = 0.31 kg, radius = 0.028 m) may each be treated asuniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?1_________ N
A car accelerates uniformly from rest to a speed of 35.0 mi/h in 9.0 s, find the constant acceleration of the car
Chameleons catch insects with their tongues, that they can rapidly extend to great lengths. In a typical strike, the chameleon's tongue accelerates at a remarkable 250 m/s^2 for 20 {rm ms}, then travels at constant speed for another 30 {rm ms}.
A student wants to lose some weight. He knows that rigorous aerobic activity uses about 700 kcal/h (2900 kJ/h) and that it takes about 2000 kcal per day (8400 kJ) just to support necessary biological functions, at what rate will this student "burn"..
An engine is built to extract power from the temperature difference in the ocean. what is the maximum theoretical efficiency of such an engine
In exercising, a weight lifter loses 0.124 kg of water through evaporation, find the change in the internal energy of the weight lifter
A solid block is attached to a spring scale. The reading on the scale when the block is completely immersed in water is 25.2 , What is the block's volume
A series of RLC circuit has R=200 ohms, L=40.0mH and C=120pF. What is the impedance of this circuit at resonance
If a wire has the dimensions 2 meter long and a radius of 1mm and the linear density of 10g/m, what is the mass of the wire
A raindrop of mass 3.10 multiplied by 10-5 kg falls vertically at constant speed under the influence of gravity and air resistance. What is the work done on the raindrop by air resistance
A box with a volume of 3.9 L contains 4 molecules. By what factor is the total number of states for all molecules increased
A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. find the speed of the ball just before it lands
Draw a cube and Cartesian axes. All points of the cube lie in the (+,+,+) octant of the coordiante system. One vertex of the cube is at (0,0,0), the point called O.
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