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Q. A cowboy at a dude ranch fills a horse trough that is 1.50m long, 65cm wide and 45cm deep. He uses a 2cm diameter hose from which water emerges at 1.50m/s.
How long does it take him to fill the trough?
A ray of light incident upon a mirror makes an angle of 42 with the mirror. What is an angle between the incident ray and the reflected ray.
What is the least coefficient of friction between the beam and the wall for the beam to remain in static equilibrium.
Suppose one gallon of gasoline produces 1.1 x10^8 J of energy, and this energy is enough to operate a car for 18 miles. An aspirin tablet has a mass of 275 mg. If the aspirin could be converted completely into thermal energy, how many miles would ..
How various revolutions per minute would a 21 -diameter Ferris wheel need to make for the passengers to feel "weightless" at the topmost point.
A grinding wheel of radius 0.35 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 75N · m. Find the magnitude of the friction force.
A 4.7 e2 kg hot-air balloon takes off from rest at surface of the earth. The nonconservative wind and lift forces take the balloon up, doing +9.70 multiplied by 104J of work on the balloon in the process. At what height above the surface of the ea..
Weight of a box is 150 pounds. The horizontal force required to move the box is 70 lb. What horizontal force is required if 60lbs is added to box.
Compute the coefficient of kinetic friction
She notices a group of workers down the walkway who have suddenly blocked her path, and she makes a quick stop in 1.8 seconds. What is Suzies average acceleration
A speed skater moving across frictionless ice at 8.4 m/ s hits a 5.2 m -wide patch of rough ice. She slows steadily, after that continues on at 6.3 m/s.
A 0.14 kg ball is placed in a shallow wedge with an opening angle of 126°. For each contact point between the wedge and the ball, determine the force exerted on the ball. Assume the system is frictionless.
The effects of the spin of the earth
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