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Q1. an airplane is flying horizontally with the speed of 1300km/h while an engine falls off. Neglecting air resistance, suppose it takes 25 s for the engine to hit the ground.
a) what is the altitude of the plane?
b) what is the horizontal distance the airplane engine falls
Q2. An athlete does the 100 m dash. If observers on the spaceship moving with a speed of 0.760c relative to Earth see the athlete's run and measure his time to be 16.34 s, find out the time that was recorded on Earth.
An electron is constrained to the central axis of a ring of charge 1 coulomb and of radius 1 meter. Find the frequency of oscillation of the electron in Hertz
You want to create an electric field at location. where would you place an electron to produce this filed at the origin
Explain why the VOLTS/DIV knob of an oscilloscope doesn't have to be calibrated and the TIME/DIV button must be calibrated when measuring time-constants
Refrigerant-22 enters a turbine at 300 psi, 280°F, 2000 ft3/hr. The exit is at 15 psi, 10°F. Find the mass flow rate
A 2.80 kg object moves in a plane with velocity components vx = 14.0 m/s and vy = -84.0 m/s as it passes through the point (x,y) = (0.7,-4.2) m. What is the magnitude of its angular momentum relative to the origin at this moment
A certain nuclear power plant has an electrical power output of 420 MW. The rate at which energy must be supplied to the plant is 1,570 MW. At what rate is thermal energy expelled by the plant
A very hard rubber ball (m = 0.7 kg) is falling vertically at 9 m/s just before it bounces on the floor. find the average force exerted by the floor on the ball
Zach, whose mass is 71kg , is in an elevator descending at 13m/s . The elevator takes 5.0s to brake to a stop at the first floor. What is Zach's apparent weight while the elevator is braking
With the battery disconnected the compass needle points to the right, in the plane of the coil. The apparatus is located near equator, where the Earth's magnetic field B Earth is horizontal, with a magnitude of 4×10-5 tesla. (Presume that B Earth ..
Explain how many penguins of mass 27 kg each can stand on the ice block before they get their feet wet?
A cue ball, which has a mass of 0.17 kg, collides head-on with a stationary 8-ball, what was the velocity of the cue ball before and after collision
As Tony the fisherman reels in a "big one", he turns the spool on his fishing reel at the rate of 3.5 complete revolutions every second. If the radius of the reel is 3.5cm , what is the linear speed of the fishing line as it is reeled in
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