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The 50-kg crate of Prob. 3/1 is now projected down an incline as shown with an initial speed of 7 m/s. Investigate the time t required for the crate to come to rest and the corresponding distance x traveled if (a) ? = 15° (b) ? = 30°
PROBLEMS 1
The 50-kg crate is projected along the floor with an initial speed of 7 m/s at x = 0 The coefficient of kinetic friction is 0.40. Calculate the time required for the crate to come to rest and the corresponding distance x traveled
An electric utility company supplies a customer's house from the main power lines (120 V) with two copper wires, find the power delivered to the customer
Two metal spheres, each of radius 1.0 cm, have a center-to-center separation of 2.0 m. Sphere 1 has charge +2.90 10-8 C. Calculate the potential at the point halfway between the centers
The rotor (flywheel) of a toy gyroscope has mass 0.150 kg . Its moment of inertia about its axis is 1.20×10-4kg·m2. The mass of the frame is 2.70×10-2 kg .
A 15kg block is at the top of a smooth incline that is 20 degrees with respect to the horizontal and is 75 m in length. How far down the incline did it slide
A block of ice with mass 2.00 kg slides 0.890m down an inclined plane that slopes downward at an angle of 28.3 degrees below the horizontal. If the block of ice starts from rest, what is its final speed
A football player tests his vertical jump by jumping straight up a distance of 47.9 inches. What was the player's initial velocity in meters per second
An acoustic signal is composed of the first three harmonics of a wave of fundamental frequency 470 Hz. If these harmonics are described, in order, by cosine waves by amplitudes of 0.710, 0.170, and 0.790, what is the total amplitude of the signal at ..
in an experiment a shearwater a seabird was taken from its nest flown 5150 km away and released. the bird found its way
Small particles suspended in the air have a v_rms = 2.8 x 10^-3m/s. What is the mass of one of the small particles
A satellite has a mass of 106 kilogram and is placed at 2.0 x 106 meter above the surface of Earth. Find the potential energy associated with the satellite at this location
The Ulysses space probe of the Sun encountered the planet Jupiter in 1998 and returned to make a second sweep over the Sun's poles in 2000-2001. Determine the time (in seconds and minutes) it takes a radio signal to reach the Earth when the space ..
In short-track speed skating, the track has straight sections and semicircles 16 m in diameter. What is the horizontal force on the skater
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