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A railroad car of mass 12,000kg is traveling at a speed of 6.0 m/s when it collies with an identical car at rest. Thte two cars look together. What is their common speed after the collision?
a 0.005 kg. bullet is fired at 300 ms east into a 10 kg. block of wood at rest. if the bullet sticks into the wood what
a horizontal rifle is fired at a bulls -eye. the muzzle speed of the bullet is 670ms the gun is pointed directly at the
Find the energy, in joules, of one quantum of energy for an atomic oscillator in a block of aluminium.
you are the prosecuting attorney in a case. you are eliciting testimony from your star witness who has said that he was
A ceiling fan is turned on and a net torque of 1.9 N·m is applied to the blades. The bladeshave a total moment of inertia of 0.24kg·m2. What is the angular acceleration of the blades?
A proton and electron are far away from each other, how quick would the electron be going in the orbit if we assume centripetal motion?Therefore, what is the electrnss kinetic energy
An electron with kinetic energy1.40keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is21.0cm. calculate the frequency of circling
the world speed record on water was set october 81978 by ken warby of blowering damaustralia. if ken drove his
During heavy rain, a section of a mountainside measuring 3.4 km horizontally, 1.2 km up along the slope, and 0.53 m deep slips intoa valley in a mud slide
7.85 g of nitrogen gas at an initial pressure of 3.87 atm and at 16°C undergo an isobaric expansion until the volume has doubled. What is the gas volume after the expansion
A weight of 45.0 N is suspended from a spring that has a force constant of 220 N/m. Determine the maximum value of the driving force
A bedroom bureau with a mass of 57 kg,including drawers and clothing, rests on the floor. If the coefficient of static friction between the bureau and the floor is 0.45, what is the minimumhorizontal force a person must apply to start the bureaumov..
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