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The pilot of an airplane traveling 180 km/h wants to drop supplies to flood victims isolated on a patch of land 150 m below. The supplies should be dropped how many seconds before the plane is directly overhead?
Consider an angular motion. If the displacement is given as 250teθ, and the radius r is constant, derive the expressions for the angular velocity θ=ω, angular accelerationα, linear displacements, linear velocitytv, normal accelerationna, and tange..
A 220 g block hangs from a spring with spring constant 12 N/m. At t=0;{rm s} the block is 31cm below the equilibrium point and moving upward with a speed of 89.0 cm/s. What is the block's distance from equilibrium while the speed is 30 cm/s.
What phase difference between two otherwise identical harmonic waves, moving in the same direction along a stretched string, will result in the combined wave having an amplitude 1.4 times that of the amplitude of either of the combining waves? Exp..
Find the resulting angular speed of the disk (in rad/s) and describe the direction of rotation.
Where does package hit the ground relative to the point
An airplane maintains a speed of 567 km/h relative to the air it is flying through as it makes a trip to a city 745 km away to the north.
What is the torque on the root of the tooth about point A.
Three forces act on an object. A 2 N force acts due east and a 3 N force acts due north. If the net force on the object is zero, what is the magnitude of the third force?
A 1.5kg- block of ice is initially at a temperature of -7.0C a)If 2.6×10^5J of heat are added to the ice, what is the final temperature of the system? b)Find the amount of ice, if any, that remains.
A rock is thrown vertically upward with a speed of 19.0m/s from the roof of a building that is 70.0m above the ground. Assume free fall. What is the speed of the rock just before it strikes the ground?
find the coefficient of linear expansion for the material of which the rod is made.
Let be the magnitude of the kinetic energy of puck A at the instant it reaches the finish line. Likewise, is the magnitude of the kinetic energy of puck B at the (possibly different) instant it reaches the finish line.
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