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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 charge q1 = -7 µC is at the origin, and feels a force along the positive x-axis equal to 1.8 N. What is the x-component of the electric field
Using the kinematic equation, prove that if two balls are released simultaneously from table, one with zero velocity and the other with a horizontal velocity, they would both reach the ground at the identical time.
A certain device in a 120 V circuit has a current rating of 20 A. Find the resistance of the device
A star's temperature is5161K. According to the Stefan-Boltzmann law, how much energy is radiated into space per second by each square meter of the star's surface
A long, thin, massless rod of length L rotates in a vertical plane about a frictionless pivot point. Find the speed of the mass at the bottom of the swing
Charges of 3.00 nC, -2.00 nC, -7.00 nC, and 1.00 nC are contained inside a rectangular box with length 1.00 m, What is the electric flux through the surface of the box
A 5.40×10-2- wad of putty is thrown horizontally at the block, hitting it with a speed of 2 and sticking. far does the putty-block system compress spring.
A stretched string fixed at each end has a mass of 49.0 g and a length of 8.60 m. The tension in the string is 49.0 N. What is the vibration frequency for this harmonic
A ball is thrown horizontally from the roof of a building 47.0m tall and lands 21.3m from the base. What was the ball's initial speed
A uniform brass disk of radius R and mass M with a moment of inertia I about its cylindrical axis of symmetry is at a temperature T = 37 °C. Determine the fractional change in its moment of inertia
A quarter circle of electric charge with a radius of 2.5 m has a uniform charge density of +0.7x10^-6 C/m. At the center of the circle
A transformer has input voltage and current of 12 V and 6 A, and an output current of 0.8 A. how many turns are on the primary side
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