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Q1. A 1.2 kg mass attached to a spring oscillates with amplitude of 6.3 cm and a frequency of 1.1 Hz. What is its energy of motion?
Q2. Blocks with masses of 2.0 {rm kg}, 6.0 {rm kg}, and 9.0 {rm kg} are lined up in a row on a frictionless table. All three are pushed forward by a 20 {rm N} force applied to the 2.0 {rm kg} blocks. How much force does 6.0 {rm kg} blocks exert on the 9.0 {rm kg} blocks?
A 70 kg crate is pushed at constant speed up the frictionless 35° ramp shown in the figure. What horizontal force F is required? What force is exerted by the ramp on the crate
A crate of 30.2- tools rests on a horizontal floor. You exert a regularly increasing horizontal push on it and observe that the crate just begins to move while your force exceeds 319. After that you must reduce your push to 227 to keep it moving at a..
Two ice-skaters, whose masses are 45 kg and 75 kg, hold hands and rotate about a vertical axis that passes between them, Find the angular momentum of the system about it's center of mass
A particular nucleus of the element plutonium contains 94 protons and 150 neutrons. What is the magnitude of the force from the nucleus on a single electron that is at a distance of 0.563 × 10-12 m from the plutonium nucleus.
A vertical straight wire carrying an upward 30?Acurrent exerts an attractive force per unit length of 5.5×10?4N/m, What current (magnitude) flows in the second wire
Find the positions of the two masses at any subsequent time t (before either mass returns to the table) and describe the motion.
Identify three examples of 19th century Impressionist painting or sculpture and three Post-Impressionist works. Explain how the six pieces of art fall into these two styles.
You want to shoot a 19cm long arrow parallel to this axle and through the wheel without hitting any of spokes. Suppose that the arrow and the spokes are very thin.
A child's toy consists of a m = 26 g monkey suspended from a spring of negligible mass and spring constant k. calculate the speed of the monkey in Ve m/s as it passes through equilibrium
,000-kg pile driver is used to drive a steel I-beam into the ground. calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest
The amount of 14C in an old, isolated sample of vegetation is 0.666 that expected from a present day sample with an equivalent carbon content
a red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 211 m, What are the acceleration of the green car
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