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As a space craft approaches a planet, the rocket engines on it are fired to slow it down so it will go into orbit around the planet. The spacecraft's mass is 269 kg and the thrust (force) of the rocket engines is 53 N. If the speed of the spacecraft must be decreased by 120 m/s, how long must the engines be fired?
A 50 kg bag of sand at 25 C falls 10 m onto the pavement and comes to an abrupt Stop. What is the change in internal energy in the sand
At an outdoor market a bunch of bananas is set to oscillatory motion with amplitude of 20.0 cm on a spring with a force constant of 16 N/m.
An object with a mass of m = 4.6 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.265 m, determine the velocity when it hits the floor
A cord connected at one end to a block which can slide on an inclined plane has its other end wrapped around a cylinder resting in a depression at the top of the plane . Determine the speed of the block after it has traveled 1.80 along the plane, ..
Nichrome wire of cross-sectional radius 0.758 mm is to be used in winding a heating coil. find the length of wire you must use to wind the coil
One solenoid is centered inside another. The outer one has a length of 47.0cm and contains 6800 coils, Find the emf induced in the inner solenoid
Given a capacitor whose plates measure 15cm by 3.7 cm and are separated by a 2.2mm air gap. Calculate he maximum amount of energy which can be stored in the capacitor under these conditions
A thin sheet of transparent material has an index of refraction of 1.40 and is 15.0 mm thick. how many fringe shifts occur in the pattern
An electronics technician wishes to construct a parallel-plate capacitor using rutile (? = 1.00 102) as the dielectric. If the cross-sectional area of the plates is 1.00 cm2, what is the capacitance if the rutile thickness is 1.00 mm?
A 0.15 kg particle moving to the left with a speed of 0.05 m/s, Determine the final velocity of each particle and the fraction of total energy transferred to the 0.27 kg particle
A physical pendulum is composed of a 1.4 m rod with mass mr = 0.5 kg and a solid sphere with mass ms = 2.0 kg, What is the angular frequency of the oscillation
A vertical straight wire carrying an upward26-A current exerts an attractive force per unit length of 7.3×10?4N/m, What is the direction of the current in the second wire?
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