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Parts a to d are independent questions, each referring to the initial situation. What is the period if:
Determine the maximum height on the wall to which the firefighter can project water from the hose, is the speed of the water at the nozzle is v_C=48f/s.
The elastic rope obeys Hooke's law. Find how much the rope is extended beyond its unloaded length when the performer hangs at rest.
At this instant your opponent is 10 m away from the ball. He begins moving away from you.
If the tension is increased to 450N, what is the new fundamental frequency?What is the speed of a wave on this string?
A binary star system consists of two stars, each of mass M, orbiting around their common center of mass with radii R from the center of mass.
A diver runs horizontally with a speed of 1.20 m/s off a platform that is 10 m above the water. What is his speed just before striking the water?
What is the horizontal distance between the end of the rifle and the bull's eye?
What is the magnitude of the horizontal force that should be applied to the lower block, so that it just begins to slide out from under the upper block?
A tree limb breaks off and comes to rest across a barbed wire fence at a point that is not in the middle between two fence posts.
What is the difference between mass and weight? Discuss the units of each quantity, what each physically measures and the relationship.
A massless spring is hanging vertically and unloaded, from the ceiling. A mass is attached to the bottom end and released.
Two wires are parallel, and one is directly above the other. Each has a length of 50.0 m and a mass per unit length of 0.020 kg/m.
If the tension in the string were increased by a factor of four, what would be the new fundamental frequency?
One has an angular speed of 1.3 10-3 rad/s, while the other has an angular speed of 3.3 10-3 rad/s. How long will it be before they meet?
Write down the Lagrangian L for two particles of equal mass m1 = m2 = m, confined to the x-axis and connected by a spring with potential energy U.
Two springs with the same unstretched length, but different force constants and are attached to a block with mass on a level.
In terms of A_1, what is the amplitude for the same driving frequency and the same driving force amplitude F_{max}, if the damping constant is 3b_{1}?
A 430-g soccer ball lying on the ground is kicked with a force of 800N. If the kick lasts 0.01 s, the ball flies off with a speed of.
Find the magnitude of the acceleration of the two objects and the tension in the string. Show all work.
A piece of string wraps around a cylinder 8 times. The length of the string is 14 cm. calculate the circumference of the cylinder.
When you increase your speed by 4.0 mi/h, the time to go one mile decreases by 12 s. What was your original speed?
What is the magnitude of the (horizontal) force of the father on the child just before the child is released?
Stone B collides with A head-on with a speed of 8.1m/s. After the collision stone A moves towards the wall perpendicular to it.
Two trains are driving towards each other .One at 144 km/h and the other at 72 km/h When they see each other they start to brake at 1 m/s2.