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A 64.0-kg runner has a speed of 5.50 m/s at one instant during a long-distance event.
What is the runner's kinetic energy at this instant?
A converging lens with a focal length of 5.0cm is to the left of a second identical lens. When a feather is placed 13cm to the left of the first lens, What is the separation between the lenses
An inventor claims to have devised a cyclic engine which exchanges heat with reservoirs at 300 K and 540 K, and which can produce 450 J of work per 1000 J of heat extracted from the hot reservoir. Is his claim feasible.
Suppose a collision produces a pair of particles, an electron and a positron (antielectron). the two are both initially traveling at a velocity of 8.0E4i m/s. what is the electric force on the electron? (neglect the electric force due to the positr..
A cancer patient is undergoing radiation therapy in which protons with an energy of 1.2 MeV are incident on a 0.25 Kg tumour. How many protons are absorbed by the tumour
At the beginning of a dive, a diver is in the layout position with an angular velocity of 100°/s and a moment of inertia of 15 kg·m2. What is the diver's moment of inertia in the tuck position
A rectangular fish tank measures 20 cm by 70 cm by 40 cm high. The tank is filled with water to a depth of 37 cm. What is the total force of the water on the bottom
the abovegroundswimming pool of h=.95m has an external filter sitting on ground . the filter has an opening 2cm is diameter that connects to the pipe of 1cm diameter. what is the pressiure at the filter openning
Two coils are close to each other. The first coil carries atime-varying current given by I(t) =(4.7 A)e^-0.023t sin(377t). What is the mutual inductance of the coils
question1a small metal ball carrying a net charge of q1 -2.40 mu c is held in a stationary position by insulating
find the magnitude and direction of the resultant force A + B that is applied to the stump. Specify the direction with respect to due east.
A balloon is filled with helium at a pressure of 2.4 x 10^5 pa. The balloon is at a temperature of 18 degrees C and has a radius of 0.25 m. By what factor does the radius of the balloon increase
A conveyor belt is moving horizontally with a constant speed of 7 m/s (wrt earth). What is displacement of the bag (wrt earth) by the time it reaches the speed of the belt
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