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A massless spring of constant k = 1000 N/m is fixed on the right side of a level track. A block of mass m = 1.50 kg is pressed against the spring, compressing it a distance d =20.0 cm. The block (initially at rest) is then released and travels toward a circular loop-the-loop of radius R = 1.50 m. The entire track and the loop-the-loop are frictionless, except for the section of track between points A and B. The coefficient of kinetic friction between the block and the track along AB is ?k = 0.250 and the length of AB is 3.00 m.a. Determine the speed of the block at point A.b. Calculate the speed of the block at point B.c. Find the speed of the block at point C. What is the minimum speed needed by the block at point C to make it around the top of the loop-the-loop? Will the block make it?
A village maintains a large tank with an open top, containing water for emergencies. The water can drain from the tank through a hose of diameter 6.70 cm. find the friction force exerted by the nozzle on the stopper
At one point in a pipeline, the water's speed is 2.95 and the gauge pressure is 3.80×104. Find the gauge pressure at a second point in the line 10.8 lower
The refractive indices of materials A and B have a ratio of nA/nB = 1.79. The speed of light in material A is 1.07 x 10^8 m/s. What is the speed of light in material B
A boy tosses a football upward. If the football rises a vertical distance of 4.1 m and the boy catches it at the same point he released it
A rock is dropped off the side of a bridge and hits the water below 5.7 s later. What is the height of the bridge above the water
An air-filled toroidal solenoid has a mean radius of 10.0 cm and a cross-sectional area of 7.00 cm^2. How many turns does the winding have
A pulley system lifts a 500 lb bloch 2 feet with an effort of 50 lbs. If the 50 lbs moves 30 feet, what is the efficiency of the pully system
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. Calculate the apparent thickness of the plate as viewed from above the water
A parallel plate capacitor has a separation between its plates of 1.0 mm. There is a dielectric with a dielectric constant of 2.1 fi ling the gap. what is the area of one of the capacitor plates
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.65 104 m/s, What is the orbital speed of the second satellite
The second hand of a large grandfather clock has length 20 cm, very small width and depth, and a mass of 100g. What is the second hand's kinetic energy
A car chases a coyote down a road ending in a sheer cliff. What frequency does the coyote hear for the sound reflected from the cliff
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