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An object is thrown downward with an initial speed of 15 m/s from a height of 85 m above the ground. At the same instant, a second object is propelled vertically up from ground level with a speed of 29 m/s. At what height above the ground will the two objects pass each other?
The accelerationof gravity is 9.8 m/s
In the operating room, anesthesiologists use mass spectrometers tomonitor the respiratory gases of patients undergoing surgery. Onegas that is often monitored is the anesthetic isoflurane (molecularmass = 3.06 x 10-25 kg). In a spectrometer, a sin..
Two gerbils run in place with a linear speed of 0.55 on an exercise wheel that is shaped like a hoop. Find the angular momentum of the system
A person drives a car at a constant speed of 90 km/h along a straight line from point A to point B and then drives back along the line from B to A at a constant speed 110 km/h. What is her average speed over the entire trip?
Determine the initial potential energy
a block with mass m 0.4 kg oscillates with amplitude a 0.4 m at the end of a spring with force constant k 7 nm on a
A cube floats in water.The length of each side 8 cm. The cube is 3/4 submerged. find the weight of the cube in air
a heavy box of school books (mass is 50kg) was set down at rest on an inclined street (theta = 30 degrees). Draw a force Diagram of the box
A 4.50 hp water pump is pumping water from a well 7.50 m below ground. How many liters of water can it lift to the ground in 1 hour
a gas is confined to one side of a rigid insulated container divided by a partition. the other side is initially
A 3.3 millimeter copper wire carries a 16 Amp current (uniform across its cross section). Evaluate the magnetic field at the surface of the wire
A person can be killed if a current as small as 50 mA passes near the heart. An electrician is working on a humid day with hands damp from perspiration. What potential difference between the two wires
after a star like the sun stops producing energy via fusion it collapses into a degenerate object called a white dwarf
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