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A skydiver jumps out of a plane and fall 7.7 seconds before opening the parachute. What is the sky diver's speed when parachute opens?
what is the diameter of the copper rod. Pull horizontally on a crate with a force of 140 N and it slides across the floor in a dynamic equilibrium. How much friction is acting on crate.
A concave mirror has a focal length of 16 cm. The mirror forms an image located 36 cm in front of the mirror. What is the magnification of the mirror
Consider the mass spectrometer shown schematically in the figure below. The electric field between the plates of the velocity selector is 5400 V/m, Calculate the radius of the path for a singly charged ion having a mass m = 3.29 10-26 kg
A capacitor (capacitance C1) is connected across the terminals of an ac generator. Without changing the voltage or frequency of the generator, a second capacitor (capacitance C2) is added in series with the first one.
A pump on the ground floor of a building can pump up water to fill a tank of volume 30 m^3 in 15 min. If the tank is 40m above the ground and the efficiency of the pump is 30%
a for a diffusion analysis where the temperature is not a fixed variable calculate the diffusivity of nickel in iron at
A plane light wave with wavelength .60 micrometers falls normally on the face of a glass wedge with reflecting angle 15 degrees. The opposite face of the wedge is opaque and has a slit of width b=10
A pulley is attached to the ceiling (as shown in the figurebelow). Spring scale A is attached to the wall and a rope runshorizontally from it and over the pulley. The same rope is then attached to spring scale B
a rocket of mass 3.52 times 105 kg is in flight near earths surface. its thrust is directed at an angle of 65.8deg
A cubic centimeter in a typical cumulus cloud contains 50 to 500 water drops that have a typical radius of 10µm. For that range, give the lower value and the higher value, respectively, for the following.
2.28 kg of water are changed from ice at 0degc into liquid water at 0degc. the latent heat of fusion for water is lf
A 1.20 liter flask contains a certain quantity of ideal gas at 305 K. after that an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.30 times its unique value. What is the final temperature.
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