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A child throws a rock horizontally off of a 7m building with a velocity of 17 m/s/ East.
A) How long will it take the rock to hit the ground?
B) How far away from the building will the rock land?
C) Give the vertical and horizontal components of the velocity as the rock hits the ground.
To fight a fire on the fourth floor of a building, firefighters want to use a hose of diameter 6.31cm to shoot 925 liters/minute of water to a height of 11m, What pressure must the water have inside the hose
Draw the field lines for two infinitely long wires one running along the y axis and one running along the x axis, both charged uniformly with lambda C/m. Make an expression for the electric field E at any point in the xy plane in terms of x and y...
Starting with 2.10 mol of N2 gas (assumed to be ideal) in a cylinder at 1.00 atm and 21.0 °C, a chemist first heats the gas at constant volume, Calculate the amount of work done by the gas
A sewing machine needle moves with a rapid vibratory motion, rather like SHM, as it sews a seam. What is the maximum needle speed
A fish in water sees the sun by look at an angle of 33 degrees with the vertical (normal). find the angle the sun makes with the horizon
A vertical tube open at the top contains 5.2 cm of oil (density 0.82 g/cm^3) floating on 5.2 cm of water. Find out the gauge pressure at the bottom of the tube.
A ball rolls down a roof that makes an angle of 30 degrees to the horizontal. The ball has an initial speed of 5 m/s and the roof is 7 meters tall. how far from the base of the house does it land
Satellite orbits the earth at a distance equal to twice the earth's radius above the surface of the earth (the total distance from the center of the earth is three times the radius of the earth).
A tunnel of length L = 146 m, height H = 7.7 m high, and width 5.7 m (with a flat roof) is to be constructed at distance d = 60 m beneath the ground, What is the total weight of the ground material the columns must support
A solenoid 10.0 cm in diameter and 79.9 cm long is made from copper wire of diameter 0.100 cm, with very thin insulation. What power must be delivered to the solenoid
The average distance of the planet Mercury from the sun is 0.39 times the average distance of the earth from the sun. How long is a year on Mercury in units of earth years
An echelette or blazed grating has 450 lines per centimeter and is ruled for the concentration of infrared light of wavelength 5.0 µm in the second order, find the angle of the ruled faces to the plane of the grating
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