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Ball of mass M attached to strong of length L moves in circle in vertical plane. At top of circular path tension in string is 2 x weight of ball. The speed of the ball at the top is v =√3gL
If the string is cut when ball is at top find time it takes ball to reach the ground. All answers are in terms of M, L and g.
a block with a mass of 13.1 g and a charge of 8.37 x 10-5 c is placed in an electric field with x component ex 2.93 x
In making raspberry jelly, 887 g of raspberry juice is combined with 930 g of sugar. The mixture starts at room temperature, 23.0°C, and is slowly heated on a stove until it reaches 220°F, How much energy does the mixture absorb
Two neutrons are in an infinite square well with L=2.0 fm. Find the minimum total energy that the system can have
a 55g horizontal metal bar 10cm long is free to slide up and down between two tall vertical metal rods that are 10cm
A tennis player hits a 58.0 tennis ball so that it goes straight up and reaches a maximum height of 6.35. How much work does gravity do on the ball
The output stage of a high-fidelity amplifier has an internal impedance of 162 ohm. determine what must be the turns ratio of the output transformer for maximum power transfer
A 30 kg boy rides a roller coaster. The acceleration of gravity is 9.8 m/s^2. With what force does he press against the seat when the car moving at 6.1 m/s goes over a crest
A 63 kg girl weighs herself by standing on a scale in an elevator. What is the force exerted by the scale while the elevator is descending at a constant speed of 10.0 m/s.
Calculate the final equilibrium temperature assumning no heat loss after mixing occurs.
In the "free electron molecular orbital" (FEMO) theory, the electrons in a conjugated molecule are treated as independent particles in a box of length L. Predict the minimum excitation energy in butadiene.
An electron is accelerated by a uniform electric field (1000 V/m) pointing vertically upward. Utilize newton's laws to determine the electron's velocity after it moves .10 cm.
In a two-slit interference experiment, with the sits 0.041 mm apart and screen at a distance 75 cm, What is the wave length of the light
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