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Q1. There is a well-known legend about physicist Isaac Newton. It says that he was inspired into his improvement of the Law of Gravitation as resting under a tree and having an apple fall (free-fall) on his head from one of the branches of the tree. Assume the apple was 3.90 meters above ground before falling, even as Newton's head was 90 centimetres above ground. How long did it take the apple to hit Newton after falling off? (Apple falls from rest)
Q2. A box of books weighing 312 N is shoved across the floor by a force of 425 N, exerted downward at an angle of 35.2 below the horizontal. If coefficient of kinetic friction between the box and the floor is 0.570, how long does it take to move the box 4.00 m, starting from rest?
Q3. Draw a graph of velocity vs. time for an object that has:
a. A positive initial velocity and a constant positive acceleration.
b. A positive initial velocity and a constant negative acceleration.
c. A positive initial velocity and no acceleration.
A horizontal 799-N merry-go-round is a solid disk of radius 1.45 m, started from rest by a constant horizontal force of 49.9 N applied tangentially to the edge of the disk
The former move along the surface of the earth much like the ripples in the surface of a pond, while the other type propagate through the whole earth forming a hemisphere around the point of origin of the quark assuming that it occurred close to t..
Calculate the mass of a solid gold rectanglar bar that has dimensions lwh = 4.20 cm x 12.0 cm x 30.0 cm. (the density of gold is 19.3x10^3 kg/m^3.)
A 12.0 kg bucket of water of is suspended by a rope wrapped around a windlass, which is the solid cylinder 0.500 m in diameter with mass 14.0 kg. The cylinder is pivoted on a frictionless axle through its center. The bucket is released from rest at t..
You are making pesto for your pasta and have a cylindrical measuring cup 10.4cm high made of ordinary glass (?=2.7×10?5(C?)?1), At what temperature will the olive oil start to spill out of the cup
The left arm of the tube has a cross-sectional area of A1=10 cm2, and the right arm has a cross-sectional area of A2=5 cm2. find the length of the water column in the right arm of the U-tube
A copper block is removed from a 300^0 C oven and dropped into 1 L of water at 20.0^0 C. The water quickly reaches 25.5^0 C and after that remains at that temperature. What is the mass of copper block.
A line of charge starts at x = +x0 and extends to positive infinity. The linear charge density is ? = ?0x0/x, Determine the electric field at the origin
A 89.0 kg skydiver hanging from a parachute bounces up and down with a period of 1.50 s. What is the new period of oscillation when a second skydiver
A plane flies 429 km east from city A to city B in 45.0 min and then 969 km south from city B to city C in 1.40 h, find its average speed (in km/h)
Find the final velocity of the combined mass after an in elastic collision 500g at 4m/s toward 300g 2 m/s and the change of KE
A particle with a charge 3.2 x 10^-19 C is moving at a speed of 5x10^7 m/s that makes an angle of 40 degrees with respect to a uniform magnetic field B, Determine the magnetic field strength B
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