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A cannon is used by the department of forestry to launch containers of fire retardant chemical onto a fire. The cannon is a distance D=1 kilometer from a cliff h=0.5 kilometer high, and the fire is 1 kilometer from the base of the cliff. If the retardant capsules are launched at an angle of 45o, compute what initial speed is necessary?
Calculate the angular momentum of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.490 kg·m2
two trains face each other on adjacent tracks. they are initially at rest and their front ends are 40 m apart. the
A 2.80 102 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 22.0° above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 7.00 m. (a) Find the work..
Electrons which were initially at rest were subjected to a continuous force of 2×10-12 newton along the entire length of two miles (one mile is 1.6 kilometers) and reached speeds very near the speed of light.
Two charges are separated by a distance d on the x-axis. thecharge on the left is +q and the one on the right is -3q. Find: a) All points along the x-axis through the charges at whichthe potential V is zero. b) All points along the x-axisthrough t..
a car sits on the side of the road trying to sit out a blizzard. a passing truck skids into the stationary car sending
prepare a 750- to 1050-word paper in which you analyze your articles. address the following define consumer psychology.
Racing on a flat track, a car going 32 m/s rounds a curve 56 m in radius. What is the car’s centripetal acceleration? What minimum coefficient of static friction among the tires and road would be required for the car to round the curve without slippi..
When the power is turned off on a turntable spinning at 67.0 rpm, you find that it takes 13.0 revolutions for it to stop while slowing down at a uniform rate. What is the angular acceleration (in rad/s^2), of this turntable
A popcorn kernal initially at rest, explodes into two peices, one haveing twice the mass of the other. What is the ration of velocities of the frgament
An electron moves in the positive x-direction a distance of 2.38 m in 2.95 x10-8 s, bounces off a moving proton, and then moves in the opposite direction a distance of 1.63m in 3.53x 10-8 s.
The peak value of the ac current in a circuit is 6.0 A, and peak value of the ac voltage applied to the circuit is 4.7 V. What is the average power derived to the circuit?
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