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Water flowing through a 2.9 cm-diameter pipe can fill a 300L bathtub in 3.6 min.
What is the speed of the water in the pipe?
Doug hits a hockey puck, giving it an initial velcoity of 6.0 m/s. how far will the puck slide before stopping
A shell, fired from a cannon, has a muzzle speed (the speed as it leaves the barrel) of 800 ft/s. The barrel makes an angle of 45o with the horizontal and, for ease; the barrel opening is assumed to be at ground level.
Iced tea is made by adding ice to 2.4 kg of hot tea, initially at 70?C. How many kg of ice, initially at 0?C, are required to bring the mixture to 10?C? (Lf = 3.33×105 J/kg, cw = 4,186 J/kg•? C)
A 1500 {rm kg} wrecking ball hangs from a 20 {rm m} long cable. The ball is pulled back until the cable makes the angle of 17.0^circ with vertical.
How far from a 53.6 mm focal-length lens must an object be placed if its image is to be magnified 2.12X and be real.
A ship's anchor weighs 5000 N. Its cable passes over a roller of negligible mass and is wound around a hollow cylindrical drum of mass 380kg and radius 1.10m. The drum is mounted on a frictionless axle. The anchor is released and drops 16 m to water.
Your medieval history class is constructing a trebuchet, a catapult-like weapon for hurling stones at enemy castles, Find an expression for the angle that will maximize the range of a projectile launched with speed from height above level ground
q1. consider a person of mass 72 kg. what would his mass be if he was composed entirely of neutron-star material of
A hoop rolls without slipping down a ramp that is inclined at 35 degrees above the horizontal. Calculate the length of the ramp
A gate in an irrigation canal is in the form of a semi-circle with radius of 4m (straight side on top). Find the hydrostatic force on the gate
An 8.0cm diameter, well-insulated vertical cylinder containing nitrogen gas is sealed at the top by a 5.8kg frictionless piston, What is the gas pressure inside the cylinder
A soccer ball lying on the ground is kicked with an initial velocity of 10.0 m/s at an angle of 37 degrees above the horizontal. How far over does it land on the ground?
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