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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
Sketch the shear force and bending moment diagram and Verify that the support reactions are correct.
A playground merry-go-round has a radius of 4.40 m and a moment of inertia of 255 kg*m^2 and turns with negligible friction about a vertical axle through its center. What is the average power supplied by the child
Find out the relative rates at which clocks go at two different distances r1 and r2 from the center of the earth.
What is the magnitude and direction of the magnetic field
If a curve with a radius of 85 m is properly banked for a car travelling 68 km/h, what must be the coefficient of static friction for a car not to skid when travelling at 97 km/h.
Suppose this rod can expand in sections like an umbrella shaft. Calculate the final angular speed if it expands in a totaly length of 2.0 m while rotating, assuming its angular momentum is conserved
A 0.175 kg baseball is thrown upward with an initial speed of 12.0 m/s. What is the force on the ball when it reaches its peak
Two different simple harmonic oscillators have the same natural frequency (f=2.60 Hz) when they are on the surface of the Earth. what is the new frequency of the pendulum
An ultralight plane and pilot have a total mass of 150 kg. what is the net force acting on the plane and pilot
at what range of speeds can a car safely make the curve.
The Achilles tendon is subjected to a large tension stress that results in a strain of 5%. how much does it elongate as a result of this strain
A pipe open at both ends has a fundamental frequency of 360 Hz when the temperature is 0°C. (a) What is the length of the pipe? m (b) What is the fundamental frequency at a temperature of 30°C? Hz
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