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If a sports car with a mass of 500kg travels down the road with a speed of 30m/s its kinetic energy is
15,000 joules
7,500 joules
225,000 joules
400,000 joules
Kathy Kool buys a sports car that can accelerate at the rate of 5.20 m/s2. She decides to test the car by racing with another speedster, Find the time it takes Kathy to overtake Stan
A single-loop circuit consists of a 7.3? Resistor, 12.0 H inductor, and a 3.1 ?F capacitor. Initially the capacitor has a charge of 6.2? C and the current is zero. Compute the charge (in C) on the capacitor N complete cycles later for N = 5.
The figure below shows a hollow cylinder that has a length equal to 1.80 m, a mass M equal to 0.88 kg, and radius equal to 0.20 m. The cylinder is free to rotate about a vertical axis that passes through its center and is perpendicular to the cylinde..
A 0.339 kilogram pendulum bob passes through the lowest part of its path at a speed of 2.70 m/s. Determine the tension in the pendulum cable at this point if the pendulum is 72.0 centimeter long
A small spherical insulator of mass 2.46 × 10-2 kg and charge +0.600 C is hung with a thin wire of negligible mass. A charge of -0.900 C is held 0.150 m away from the sphere and directly to the right of it, so the wire makes an angle with the vertica..
A boulder has a volume of 1 m3 and a mass of 5000 kg. what will be the effective mass of the boulder
Steam enters a turbine in a Rankine cycle power plant at 200 psia and 500 degrees F. Compute the isentropic thermal efficiency if the condenser pressure is 14.7 psia
A zero-resistance rod sliding to the right on two zero-resistancerails separated by the distance L = 0.75 m. The rails are connected by a 15.1-Ω resistor, and the entire system is in auniform magnetic field with a magnitude of 0.750 T.
A copper wire has a square cross section 2.7 on a side. The wire is 3.8 long and carries a current of 4.0 . The density of free electrons is 8.5*10^28 m^-3.
The angular momentum of a flywheel having a rotational inertia of 0.242 kg·m2 about its central axis decreases from 9.30 to 0.230 kg·m2/s in 4.40 s. What is the magnitude of the average torque acting on the flywheel about its central axis during th..
Two traveling sinusoidal waves are described by the wave functions, What is the amplitude of the resultant wave, What is the frequency of the resultant wave
Two equal conducting spheres are separated by a fixed center to center distance of 46.8 centimeter and have different charges. Find the initial charge that carried the positive charge
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