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A spring gun shoots a 100g copper ball directly upwards, so that the ball reaches a maximum height of 50 cm above the equilibrium position of the spring. If the spring was compressed by 10 cm, what is the spring constant that would allow such a shot?
Light is incident on a plane mirror by an angle of incidence? i = 35°. If this experiment takes place under water (n = 1.33), what is the angle of reflection?
An elevator releases 11200J of gravitational potential energy as descending 4m between floors. How much does elevator weigh.
A bowling ball made for a child has two thirds the radius of an adult bowling ball. By what factor is the mass of the child's ball reduced compared with the adult ball
In the annual battle of the dorms, students gather on the roofs of Jackson, A second balloon launched at the same angle hits the edge of Walton's roof. Find the initial speed of this second balloon
A hoop and a disk, both of 0.72- m radius and 4.0- kg mass, are released from the top of an inclined plane 2.5 m high and 8.9 m long. What is the speed of the hoop
A non conducting solid sphere of radius 2.40 centimeter carries a uniformly distributed positive charge of 7.80E-9 C. Find the magnitude of the electric field at a point 3.10 centimeter away from the center of the sphere
UCBXPhys1Exam2.tstUCBXPhys1Exam2.tstUCBXPhys1Exam2.tstUCBXPhys1Exam2.tstA person weighing 900 N is standing on snowshoes. Each snowshoe has area 2500 cm2 and has negligible weight, so the person's weight is distributed over a total area of 5000 cm2 ...
An electron is released a short distance above the surface of the Earth. Find how far below the first electron is the second
A broken-down spaceship (Star Wreck?) flies across an international soccer field, How long does the spaceship pilot measure the field to be
sand is dumped onto a conveyor belt at the rate of 25 kg per second. what force is needed to keep the belt running at a
An 11.90 V battery is connected to a series circuit containing a 6ohm resistor and a 2.30 H inductor. The circuit is established and current is 1.9833 A. How long will it take the current to reach 50 percent of its final value? Answer in units of s
A cube of ice is taken from the freezer at -8.7^circ C and placed in a 114 g aluminium calorimeter filled with 329 g of water at room temperature of 20.0 ^circ {rm C}. The final situation is observed to be all water at 15.0^circ C.
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