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A 1250 kg car is moving at 23.5 m/s. Then, 253 kJ of work is done on the car to increase its speed. What will be the car's new speed?
An airplane flying horizontally 3600 ft above the ground at 120mi/hh, drops relief aid on the ground. Resolve the angle between the vertical and the line joining plane and target at the instant when he package is released.
A box weighing 250-N is supported by the cable; the tension in the cable is 120-N. How much time elapses as box falls (starting from rest) 15.0 m.
A baseball (m = 137 g) approaches a bat horizontally at the speed of 40.6m/s (91 mi/h) and is hit straight back at a speed of 45.1m/s (101 mi/h). If the ball is in contact with the bat for a time of 1.00 ms, what is the average force exerted on the..
A ball with mass 750 g is dropped from a height of 1.25 m. hat is the magnitude and direction of the impulse from the floor that makes the ball bounce
In what direction should the aircraft head?
Two boats are heading away from shore. Boat 1 heads due north at a speed of 2.90 m/s relative to the shore. Relative to Boat 1, Boat 2 is moving 28.2° north of east at a speed of 1.63 m/s. A passenger on Boat 2 walks due east across the deck at a spe..
What radius must a water drop have for the difference between the inside and outside pressure to be 2.08 X 10^-2 atm? The surface tension of water is 72.8 dynes/cm
At a height of ten meters above the surface of a freshwater lake, a sound pulse is generated. How deep is the lake
A large cruise ship of mass 6.70 107 kg has a speed of 13.0 m/s at some instant. How much work is required to stop it
The equation of a transverse wave on a string is y = (6.1 mm) sin[(30 m-1)x + (300 s-1)t], What is the wave speed
A car of mass 1290 kg rests on a hydraulic lift with a piston of radius 0.22 m that is connected to a second piston of radius 0.027 m. what is the force at the second piston
A cubical Gaussian surface surrounds charges, q1=6.0 x 10-12C, What is the electric flux passing through the surface
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