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The thrust of a rocket is a gravitational force acting on the rocket the force of the exiting fuel gases on the rocket any force that is external to the rocket-fuel system a force that arises from the reduction in mass of the rocket-fuel system none of the above
A particle of mass 1.67×10-27 kg moves with a speed of 2.3×108 m/s relative to an observer. What is the kinetic energy of the particle in the rest frame
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer, What is the mass of the unknown element
A beam of light makes an angle of 27 o with the normal of a mirror made of 2.6- mm-thick glass silvered on the back. how far is the point at which the beam leaves the glass surface
A circuit has three resistors in series with a 36 volt source, The voltage across the third resistor is 20 V, Determine the three resistor values
A tank with a volume of 0.150 m contains 27.0 degrees celcius helium gas at a pressure of 100 atm. How various balloons can be blown up if each filled balloon so a sphere 30.0 cm in diameter at 27.0 and absolute pressure of 1.20atm .
A motorist speeds horizontally of a 50.0 meter high cliff. If the motorist wants to land on level ground below 90.0 m form the base of the cliff. how fast must he motorcycle leave the cliff top to make this landing
A 6 uF capacitor is initially charged to 100V and then connected across a 600 ohm resistor. what is the initial charge on the capacitor
A pendulum clock keeps time by the swinging of an attached mass at the end of a massless string of length L, What is the angular position of the mass at t = 0.246s
In changing the state of a gas adiabatically from an equilibrium state A to another equilibrium state B, how much is the net work done by the system in the latter case
Suppose a tank contains 636 m3 of neon (Ne) at an absolute pressure of 1.01×105 Pa. The temperature is changed from 293.2 to 295.8 K
A 600-m tall tower casts a 600-m long shadow over a level ground. At what angle is the sun elevated above the horizon
A 0.95 102 g mass of tungsten at 100.0°C is placed in 2.10 102 g of water at 20.0°C. The mixture reaches equilibrium at 21.6°C. Calculate the specific heat of tungsten
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