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A man pushing a mop across a floor causes it to undergo two displacements. The first has a magnitude of 156 cm and makes an angle of 126° with the positive x axis. The resultant displacement has a magnitude of 151 cm and is directed at an angle of 36.0° to the positive x axis. Find the magnitude and direction of the second displacement.
Imagine two 1.5 bags of protons, one at the earth's north pole and the other at the south pole. A. Calculate the gravitational attraction that each bag exerts on the other.
What is the root-mean-square speed of chlorine gas molecules at a temperature of 320 K? (R = 8.31 J/mol×K, NA = 6.02 ¥ 1023, and the molecular mass of Cl2 = 71)
A 35 mm camera with interchangeable lenses is used to take a picture of a hawk that has a wing span of 1.5 m. The hawk is 39 m away. What would be the ideal focal length of the lens used
A 61 kg speed skater with the velocity of 16 m/s comes into a curve of 18 m radius. How much friction should be exerted between skates and ice to negotiate the curve.
Brain injuries generally occur any time the brain's acceleration reaches 100 g for even a short time, Consider a car running into a solid barrier
A certain orthodontist uses a wire brace to align a patient's crooked tooth, Find the magnitude (in Newtons) of the net force exerted by the wire on the crooked tooth
A cannon ball is fired at a wall located 450 meters away. The initial horizontal component of the balls velocity is 90 m/s and it's initial angle is 24 degrees. How long does it take for the ball to reach the wall
Car Circles a Track. The 1,000 kg car is moving at the maximum speed it can without skidding off of the 50 m-radius, what is this maximum speed
Two point charges of equal mass start from rest. What is the distance between the charges and How long will it take the charges to move
Two wires are separated by 3.0 cm and each is of length 1.5 m. They repel each other with a force of 4.0 N. The current in one wire is 5.0 A. find the current in the other wire
Two masses m1=12 kg and m2= 35 kg are held connected by a massless rope hung over a frictionless light pulley. what is the tension of the magnitude in the string
Estimate the position of C.G or fulcrum & the masses of persons on a 16 feett sea saw, under balanced condition.
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