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A load of bricks is being lifted by a crane at the steady velocity of Vo (= 5 m/s) when one brick falls of H (= 5m) above the ground. Describe the motion of the free brick by sketching x(t).
a. What is the greatest height above the ground that the brick reaches?
b. How long does it take to reach the ground?
c. What is its speed just before it hits the ground?
A u-tube with a cross-sectional area of 1.00 cm^2 is open to the atmosphere at both ends. WAter is poured into the tube until the water rises part way along the straight sides, What is the density of the oil
A block of mass 2.50 kg is pushed 3.00 m along a frictionless horizontal table by a constant 18.0 N force directed 25.0° below the horizontal. Determine the work done by the net force on the block
On a cold day, 16000 J of heat leaks out of a house. The inside temperature is 20.0° C, and the outside temperature is -18° C. What is the increase in the entropy of the universe that this heat loss produces?
The radius of the planet Saturn is 5.85x10 meters to the 7th power, and its mass is 5.68x10 kg to the 26th power. Find the density of Saturn
A scaffold of mass 60 kg and length 6.5 m is supported in a horizontal position by a vertical cable at each end. What is the tension in the cable closer to the painter
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Two cars are each traveling at 27.0 m/s, and they are approaching each other. What frequency of is heard by the driver of the other car
How many conduction electrons are there in a 3.50 mm diameter gold wire that is 50.0 cm long
An office window has dimensions 3.5 m by 2.3 m. As a result of the passage of a storm, What net force pushes out on the window
A generator uses a coil that has 140 turns and a 0.50-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 120 V. assume that each turn of the coil is a square (an approximation), find out the length of the..
how long does it take for a person to radiate. Calculate the time of flight.
Ten cars at an intersection are blowing their horns simultaneously, What is the average sound level for each car
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