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A man pulls a sled at a constant velocity across a horizontal snow surface. If a force of 80 N is being applied to the sled rope at an angle of 53o to the ground, what is the force of friction between sled and snow?
question traveling at a speed of 17.3 ms the driver of an automobile suddenly locks the wheels by slamming on the
You suspect you are anemic and your physician orders some tests. He finds that your hemoglobin is 13%g. What is the concentration of hemoglobin in molar in your blood
An electric motor rotating a workshop grinding wheel at a rate of103 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude1.50 rad/s2. How long does it take for the grindingwheel to stop?
If the ball's speed just before impact is 100 m/s, what is the angular speed of the rod immediately after the collision.
A tennis ball leaves the racquet in a serve traveling 68.3 m/s. A served tennis ball is typically in contact with the racquet for 30.0 ms, What was the ball's acceleration during this serve
A 1.2 kilogram piece of cheese is placed on a vertical spring of negligible mass and a force constant of 1800 N/m. Find what is the length of compression of the spring
If the machine from the problem above does that work in 40 seconds, how much power does it have
At the same time, the stationary trumpeter played the same note. Ballot heard 3.0 beats per second. How fast was the train moving toward him.
The first-order principal maximum produced by a grating is located at an angle of ? = 15.0 degrees. What is the angle for the third-order maximum
Light of wavelength 730nm falls on two slits and produces an interference pattern in which the fourth-order fringe is 53mm from the central fringe on a screen 3.0m away
An object of mass 3.02 kg, moving with an initial velocity of 4.95 J m/s, collides with and sticks to an object of mass 2.67 kg, Find the final velocity of the composite object
An electron and a proton are each accelerated starting from rest through a potential difference of 10 / ε million volts.As an example, if ε=1 each particle would have a kinetic energy of 10 MeV. a) Find the momentum (in MeV/c) of each and find the %..
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