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A 66.0-kg skier starts from rest andslides down a 33.0-m frictionless slopethat is inclined at an angle of 15.0° with the horizontal.Ignore air resistance. >> If the slope is not frictionlessand the skier has a velocity of 4 m/s, what is the force offriction in (magnitude) N? What is the coefficient of kintetic friction?
how much weight must each man support. by how much would the temperature of the air rise over a period of 2.0 h due to the metabolism of the people.
A copy of The History of the Decline and Fall of the Roman Empire by Edward Gibbon lies exactly in the middle of an otherwise empty 6.1m long bookshelf in Robarts Library. What is the speed at which the librarian raised the shelf
An exotic finish to massive stars is that of a neutron star, Estimate the surface gravity on this monster
Frames k and k' are inertial frames. Frame k' is moving at a velocity of magnitude v realtive to frame k in the direction of the x-axis. there are rigid rods in each frame oriented along the direction of the relative velocity. someone in frame k meas..
10.0 moles of an ideal gas, at an initial pressure of 1.50 x105 N/m2 and an initial volume of 1.300 m3, Find the work done by the gas
When light with a wavelength of 228 nm is incident on a certain metal surface, Determine the wavelength of light that should be used to double the maximum kinetic energy of the electrons ejected from this surface
A model rocket blasts off and moves upward with an acceleration of 13m/s^2 until it reaches a height of 27m, What is the total duration of the rocket's flight
Use the worked example above to help you solve this problem. Figure a shows a simple apparatus for demonstrating resonance in a tube. Find the wavelength and the next two air-column lengths giving resonance
A 1600 kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16430 N on the sub, with a downward resistive force of 1000 N. What is the submarine's acceleration.
The Hubble Space Telescope (HST) is on a circular, low-Earth orbit, at an elevation h = 600 km above the Earth's surface. The orbital period is about 5800 seconds. For an observer who sees HST pass through the zenith, how long is HST above the horizo..
If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire
If you were to drink mercury (13.6g/cm^3) with a straw, what would be the maximum length of the straw
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