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An object thrown straight up falls back and is caught at the sameplace it is launched from. Its time of flight is T;its maximum height is H. Neglect air resistance. What is its average velocity for the second half of the trip? (Answer interms of H and T.)
Point charges q1 = +2.00 muC and q2 = -2.00 muC are placed at adjacent corners of a square for which the length of each side is 1.00 cm. What is the electric potential at point b
A physics student stands on the edge of a tall building 50.0m high. She throws a ball with a speed of 20.0m/s at an angle of 38.0 degrees above the horizon. how far from the edge of the building (what x) does the ball hit the ground
suppose that the engineer is at x = 0 when, at t = 0, he first spots the locomotive. Sketch x(t) curves for the locomotive and high-speed train for the cases in which a collision is just avoided and is not quite avoided. Do this on paper. Your ins..
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 56.03 diopters, and the lens-to-retina distance is 1.827 cm. How far is the blackboard from her eyes
The temperature coefficient of resistivity for the metal gold is 0.0034 (C°)-1, and for tungsten it is 0.0045 (C°)-1. find the percentage increase in the resistance in a tungsten wire
Two traveling sinusoidal waves are described by the wave functions, What is the amplitude of the resultant wave, What is the frequency of the resultant wave
A stationary mass M decays into a particle and a photon. If the speed of the particle is v, what is its mass? What is the energy of the photon?
The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is L = 98.1 m. How tall is the antenna
A small object of mass 2.00×10?2kg and charge 3.0uC hangs from the ceiling by a thread. obtain the tension in the thread
Flight to Mars. To send a satellite from Earth to Mars, a rocket must accelerate the satellite until it is in the correct elliptical orbit around the sun. What is the semimajor axis of the satellite's orbit
A cylinder contains 2.15 mol of helium gas at 22.5°C. Assume that the helium behaves like an ideal gas. Find the total internal energy of the system
The string of a conical pendulum is 54.0 cm long and the mass of the bob is 0.27 kg. Find the angle between the string and the horizontal when the tension in the string is eight times the weight of the bob
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