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An unknown mass is placed on one side of the Atwood's machine. The downward acceleration of the mass 5kg is observed to be exactly one-half of the acceleration due to gravity. Nothing that the tension in the cord is the same on each side of the pulley, determine the tension force and the unknown mass.
In a downtown office building you notice each of the four sections of a rotating door has a mass of 85 kg. What is the width of each section of the door if a force of 64 N applied to the outer edgE
An 84.4-mH inductor and a 6.27-µF capacitor are connected in series with a generator whose frequency is 361 Hz. Determine the rms voltage across the inductor
A quantity of ideal gas at 10.0°C and 100 kPa occupies a volume of 1.20 m3. how much volume does the gas occupy
An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges. Illustrate what is the speed of the electron when it is 10.0 from charge 1?
a person pulls on a 50Kg desk with a 200N force acting at 30 angle above the horizontal. the desk does not budge. draw a force diagram for the desk. Write down the equation that describes the forces which act in the x-direction.
A planet of mass 8 × 10^24 kg is at location ‹ -4 × 10^11, 7 × 10^11, 0 › m. A star of mass 7 × 10^30 kg is at location ‹ 5 × 10^11, -5 × 10^11, 0 › m. What is the force exerted on the planet by star? (It will probably be helpful to draw the diagr..
How much heat flows from 1.00 kg of water at 36.0°C when it is placed in contact with 1.00 kg of 22°C water in reaching equilibrium
A review of the basics of circular motion: The radius of a merry-go-round is 5 meters, and it takes 12 seconds to go around once. What is the direction of the velocity of this atom
A light bulb is wired in series with a 122-? resistor, and they are connected across a 120.0-V source. What is the resistance of the light bulb
An ice cube sliding along the ground at 5 m/s goes off a ramp pointed straight up as shown, What is the speed of the ice cube when it comes down, just before it hits the ground
50-g of hot water at 65 degree C is poured into a cavity in a very large block of ice at 0 degrees C, What is the mass of the ice that melts
Suppose that a disk rotates through five revolutions in 4 seconds. What is the angular rotational velocity
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