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A cannonball is shot (from ground level) with an initial horizontal velocity of 36.0 m/s and an initial vertical velocity of 21.0 m/s. What is the speed of the cannonball 2.7 seconds after it was shot?
20.0 kg floodlight in a park is supported at the end of ahorizontal beam of negligible mass that is hinged to a pole. find the horizontal and vertical forces exerted on the beam by the pole
A soap bubble (with index of refraction 1.33) is floating in air. If the thickness of the bubble wall is 114 nm, what is the wavelength of the visible light that is most strongly reflected
Using Newton's Version of Kepler's Third Law II Part A Pluto's moon Charon orbits Pluto every 6.4 days with a semimajor axis of 19,700 kilometers. Calculate the combined mass of Pluto and Charon. Express your answer using two significant figures. ..
at what range of speeds can a car safely make the curve.
A ball is kicked horizontally of the roof of a 100-ft high building at a speed of 18 ft/sec. Determine the angle in which the ball hits the ground
A certain freely falling object, released from rest, requires 1.90 s to travel the last 36.5 m before it hits the ground. Find the total distance the object travels during the fall
question in a diesel engine the piston compresses air at 309 k to a volume that is 0.0621 of the original volume and a
The star Cancri is 57 light-years from the earth and has a mass 0.85 times that of our sun. find the orbital period of the planet of Cancri
A child slides across a floor in a pair of rubber-soled shoes. Thefriction force acting on each foot is 20.0 N. The footprint area ofeach shoe sole is 14 cm2, and the thickness of eachsole is 5 mm. Find the horizontal distance by which the upper a..
A small moon of a giant planet has an orbital period of 1.74 days and an orbital radius of 4.02 105 km. determine the mass of the planet
A duck is swimming down a river and passes a slow moving log. If the log had a mass of 35.2 kg, and the duck was swimming at 3.00 m/s, what is the log\'s kinetic energy
Compressed air is used to fire a 52 g ball vertically upward from a 1.7-m-tall tube. How high does the ball go above the top of the tube
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