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an 8000 kg truck traveling with a velocity of 20.0m/s in a direction 30 (degree) south of east and a 6250 kg cartraveling with a velocity of 25.0 m/s 40 (degree) north of eastcollide in a perfectly inelastic collision. find
a) the final speed
b) the direction of the combined mass
c) the change in the kinetic energy of the system.
A wheel is mounted on a stationary axle which we can assume frictionless. As a result, the wheel can turn freely but cannot translate. How much work is done by you on the pulling
a 150 Watt computer (computer plus flat panel monitor) is turned on 8.0 hours per day. if electricity costs $0.15/kWh, how much does it cost to run the computer annually
The Gravitron is an amusement park ride in which riders stand against the inner wall of a large spinning steel cylinder. At some point, What is the maximum rotational speed at which the riders will not slide up the walls of the ride
A rocket burns fuel at a rate of 100 kg/s and exhausts the gas at a relative speed of 3.0 km/s. Find the thrust of the rocket
A cylindrical electromagnet contains a uniformly magnetized core having a magnetization of 1.5 x10^6 A/m, Find the magnetic field in the core
This hill slopes upward at a constant angle of 40 degree above the horizontal. The coefficient of static and kinetic friction between the hill and the rock are .75 and 0.20, respectively.
A block starts with a certain speed at the top of a frictionless inclined plane with an unknown angle to the horizontal. To calculate the time required for the block to reach the bottom of the plane.
A 0.246-kg toy car is powered by three D cells (4.50 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 36.1%, What is the average current supplied to the car\'s motor?
A 160(ohm) resistor is in series with a 8.00×10^-2 H inductor and a 0.400uF capacitor. compute the phase angle of the source voltage with respect to the current
a ball is pushed with an initial velocity of 6 m/s. the ball rolls down a hill with a constant acceleration of 2 m/s^2. what is the balls velocity at the bottom of the hill
A sinusoidal electromagnetic wave having a magnetic field of amplitude 1.30?T and a wavelength of 434nm is traveling in the +xdirection, What is the amplitude of the associated electric field
Transverse pulses travel with a speed of 220 m/s along a taut copper wire whose diameter is 1.20 mm. What is the tension in the wire
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