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A car of mass 3.0 x10^3 kg traveling at a speed of 20 m/s is passing a truck of mass 7.0x10^3 kg traveling at a speed of 10 m/s in the same direction along the same straight line. Calculate the speed of the center of mass of this system.
When the brakes of a certain car are applied, a deceleration of 6.0 m/s^2 is produced. How far will it travel in that time
The 2.0 kg, 20 cm diameter disk is spinning at 320 rpm. How much friction force must the brake apply to the rim to bring the disk to a halt in 2.0 s.
An 85-kg man stands 0.70 m from the center of a large, rotating turntable with a frictionless axis. What is the turntable's moment of inertia
A charging cell phone battery requires a current of 1.60 A and power is dissipated in the battery at 7.52 W. Determine the current drawn from the wall by the charger
mitch throws a 50 gram lump of clay with a speed of 20 m/s at a 500 gram target, find the coefficient of friction between the target and the surface
Assume that you have two objects, one with a mass of 5 kg and the other with a mass of 17 kg, each with a charge of ?0.011 C and separated by a distance of 8 m. What is the electric force that these objects exert on one another? Answer in units of..
question1a commercial aircraft receives a homing radio signal with an intensity of 12 muwm2 when it is 11 km from the
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 33 angle. The block's initial speed is 14. What speed does it have when it slides back down to its starting point
IF Earth's orbit were suddenly to become much more eccentric. keeping orbital semimajor axis as is, fixed at 1 AU, but let's imagine shifting both the Earth's perihelion and aphelion points by 0.9 AU, so that at perihelion we were only 0.1 AU from th..
The wavelength of the laser beam used in a compact disc player is 780 nm. Estimate the spacing between the slits of the grating
The skis have a thrust of 190 . Sam's speed at the bottom is 35.0 . Illustrate what is the coefficient of kinetic friction of his skis on snow?
Light travels a distance of 0.945m in 4.50ns in a given substance. What is the index of refraction of this substance
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