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A fan is spinning at 900 rpm. When its motor is turned off it makes 75 rev before coming to a stop. Find the moment of Inertia of the fan
A rocket is fired at a speed of 82.0 m/s from ground level, at an angle of 31.0 ° above the horizontal. find By how much does the rocket clear the top of the wall
Using Newtons law of gravitational force Find the magnitude of the gravitational exerted by one mass on the other
A force applied to an object of mass m1 produces an acceleration of 3.60 m/s2. find its acceleration under the action of the force
An aluminum rod is clamped one quarter of the way along its length and set into longitudinal vibration by a variable-frequency driving source. obtain the length of the rod
A golf ball is dropped from rest from a height of 9.50 m. It hits the pavement, then bounces back up, rising just 5.50 m before falling back down again. find the total amount of time that the ball i
A 115 V fish-tank heater is rated at 120 W, Calculate the current through the heater when it is operating
A 12- V battery causes a current of 0.40A through a resistor. how may joules of energy does the battery lose
The electric field between the plates of a paper-separated (K=3.75) capacitor is 8.19×104. determine the area of each plate
A plucked guitar string produces a sound wave of frequency 440 Hz. What is the wavelength of the sound wave
Because of the Earth's rotation, a plumb bob does not hang exactly along a line directed to the center of the Earth. How much does the plumb bob deviate from a radial line
In a home laundry dryer, a cylindrical tub containing wet clothes is rotated steadily about a horizontal axis as shown in the figure below. what rate of revolution is needed
a solid sphere of brass (bulk modulus of 1.4x10^11 N/m^2) with a diameter of 2.3 m is thrown into the ocean. by how much does the diameter of the sphere
A person whose mass is 72 kg sits on a piston of a hydraulic lift. The radius of this piston is 0.18 m, What is the mass of a puppy
An automobile having a mass of 1750 kg is placed on a hydraulic lift in a garage. The piston lifting the car is 0.235 m in diameter. What is the force exerted on the small piston
The dry weight of a man is 845 N. When he is submerged underwater, the reading on the scale is only 43.2 N. What is the density of the man
A set of crash tests consists of running a test car moving at a speed of 13.0 m/s (28.6 m/h) into a solid wall. Calculate the size of the average force which acts on the dummy during that time
A microphone is located on the line connecting two speakers that are 0.514 m apart and oscillating 180° out of phase. What is the next highest frequency that produces an interference maximum at th
A boy in a wagon is moving at 3.1 m/s east when another boy begins pulling on the wagon in the direction opposite to its motion at 1.25 m/s^2. How far from the starting point is the wagon
Alberta is going to have dinner at her grandmother's house, but she is running a bit behind schedule. What is the slowest speed at which she could drive
A charge of -3.9 micro-coulombs is launched from the positive plate of a large capacitor to the negative plate. At the positive plate, what is the distance between the plates
A defibrillator consists of a 15.3-µF capacitor that is charged to 8.4 kV. What is the average power delivered to the tissues
A bullet is fired through a board, 18.0 cm thick, with its line of motion perpendicular to the face of the board. find the bullet's acceleration as it passes through the board
You drive at 65 mi/h towards the east for 2 hours and then turn towards the north and drive at 56mi/h for 1 hour. find the average speed and average velocity
submarine on the ocean surface receives a sonar echo indicating an underwater object. What is the object's depth