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Kenny pulls with a force of 850 N. Justin pushes with a force of 650 N. The crate weighs 1250 N and sits on a ramp that is 40 degrees from the horizontal. Tyler is pushing at an angle of 35 degrees with respect to the crate. There is an angle of 50 degrees between Tanner's rope and the crate. What is the highest that mu (μ) can be in order for them to get the crate up the ramp?
A light-rail train going from one station to the next on a straight section of track accelerates from rest at 2.37 m/s2 for 15.9 s. What is the distance between the stations
Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 12 state? What is the energy of the Hydrogen atom when the electron is in the n = 3 state?
A microscope with a tube length of 200 mm achieves a total magnification of 800x with a 40x objective and a 20x eyepiece. How far is the sample from the objective lens
A hollow, spherical shell with mass 1.90kg rolls without slipping down a slope angled at 40.0 degree. Part A Find the acceleration. Take the free fall acceleration to be g = 9.80m/s^2 Part B Find the friction force. Take the free fall acceleration to..
A roller coaster, loaded with passengers, has a mass of 2,000 kg; the radius of curvature of the track at the TOP point before the dip is 24 m. what force is exerted on the vehicle by the track
A ball of mass 0.206 kg with a velocity of 1.54 m/s meets a ball of mass 0.291 kg with a velocity of -0.396 m/s in a head-on, elastic collision. (a) Find their velocities after the collision. V1f = m/s V2f = m/s (b) Find the velocity of their center ..
The photoelectric threshold wavelength of a tungsten surface is 272 nm. What is the threshold frequency of this tungsten
Suppose the velocity of a bug as a function of time is given by the following function between 0 and 2 s, Find the average speed of the bug for the whole two second trip
The frequency of light emitted by a toaster is 2.5 GHz. How many toaster photons are required to heat the water
An ore car of mass 4 000kg rolls downhill on tracks from a mine. At the end of the tracks, 10 m lower in elevation, is a spring with k = 400 000 N/m. How much is spring compressed in stopping the ore car? Ignore friction.
The resistive-wire thermometer is then calibrated against a Hg thermometer. The resistance in terms of the temperature t on the Celsius scale can be optimally fitted by the expression R = R0(1 + alpha t + beta t2) where alpha = 3.80 Times 10-3 degree..
Your eye (diameter 2.5 cm) is able to focus the image of a tree on your retina. What is the size of the image of the tree on your retina
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