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A man throws a 0.200kg rock off the top of a 50.0m cliff at an angle of 40.0 degrees above the horizontal. What is the kinetic energy of the rock in Joules just before it hits the ground 5.00 seconds later?
Tarzan, in one tree, sights Jane in another tree. He grabs the end of a vine with length 20 m that makes an angle of 45, Calculate Tarzan's speed just before he reaches Jane
A free electron and a free proton are placed in an identical electric field. which of the following statement are true?
An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
The propeller of a light plane has a length of 1.752 m and a mass of 19.96 kg. The rotational energy of the propeller is 158.6 kJ. What is the frequency of the propeller in rpm
An alpha particle, which is a helium nucleus, has a mass of 6.64*10^-27 kg. It is travleing horizontally at 42.3 km/s when it enters a uniform, What is the diameter of the path followed by the alpha particle
A horizontal 790-N merry-go-round of radius 1.60 m is started from rest by a constant horizontal force of 55 N applied tangentially to the merry-go-round
A chunk of 22 gram ice is pulled from a freezer keeping temperature -25 deg. Celsius, and placed in an identical calorimeter as the one described in problem 1. What is the experimental latent heat of fusion of ice
A 2.6kg block slides along a frictionless surface at 2.0m/s . A second block, sliding at a faster 5.0m/s, collides with the first from behind and sticks to it. What was the mass of the second block
Under normal conditions, humans radiate electromagnetic waves with a wavelength of about 9.0 microns. What is the frequency of these waves
Air is trapped above liquid ethyl alcohol in a rigid container. If the air pressure above the liquid is 1.11 atm, determine the pressure in the bulb inside a bubble 4.0 m below the surface of the ethanol.
a lantern slides down a driveway with an incline of 37 deg. If the coefficient of kinetic friction is .20. What is the acceleration of the lantern down the drive way
A patient is undergoing open-heart surgery. A sustained current as small as 25μA can be fatal. find the minimum voltage that poses a danger to the patient
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