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A rocket of mass 4.44 × 105 kg is in flight near earth's surface. Its thrust is directed at an angle of 54.5° above the horizontal and has a magnitude of 9.71 × 106 N. Find the (a) magnitude and (b) direction of the rocket's acceleration. Give the direction as an angle above the horizontal.
For the infinite square well problem an electron spends 40% of its time in the n=3 state and 60% of its time in the n=5 state. What is the average energy of the electron
A vacuum cleaner is connected to a 120V socket and uses 3.0 A when the back emf generated by the electric motor is 72 volts. What is the resistance of the coil in the motor?
the drawing shows six point charges arranged in a rectangle. the value of q is 9.5 microc and the distance d is 0.14 m.
A rock climber throws a small first aid kit to another climber who is higher up the mountain. What is the vertical height between the two climbers
Find the induced current I in the resistor. A rolling axle, 1.30 m long, is pushed along horizontal rails at a constant speed v=2.91 m/s. A resistor R=0.475Ω is connected to the rails at points a and b, directly opposite from each other.
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box, Find the acceleration of the box
A point charge with charge q1 = 2.80?C is held stationary at the origin, How much work W is done by the electrostatic force on the moving point charge
A 4.1 kg ball oscillates with a period of 2.6 seconds, and an amplitude of 23. cm. What is the maximum acceleration
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 53.90 diopters, How far is the blackboard from her eyes
If 3.9 moles of an ideal gas is at a temperature of 69 degrees C, find the pressure on the walls of the container due to gas
35g of copper pellets are removed from a 300C oven and immediately dropped into 80ml of water at 24C in an insulated cup. What will the new water temperature be
Find the capacitance of a parallel plate capacitor having plates of area 6.00 m2 that are separated by 0.200 mm of Teflon
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