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a 69 kg short track ice skater is racing at a speed of 11 m/s when he falls down and slides across the ice into a padded wall that brings him to rest. Assuming that he doesn't lose any speed during the fall or while sliding across the ice, how much work is done by the all while stopping the ice skater?
The density of water is 1.0 x 10^3 kg/m3. Calculate the gauge pressure in the pipe at this location.
An old wooden telephone pole with a single cross member was blown off center during a recent storm. To temporarily stabilize the telephone pole, a repair crew has attached a cable from the end of the cross member
Air enclosed in a cylinder has density p = 1.4kg/m^3, What will be the density of the air if the length of the cylinder is doubled while the radius is unchanged
The supersonic aircraft Concorde has a length of 61.6m when sitting on the ground on a typical day when the temperature is 12.0C . The Concorde is primarily made of aluminum
The engineer has done a survey and found that almost no one complains if the force directed up the ramp is no more than 20 .Ignoring friction, illustrate at what maximum angle should the ramps be built, assuming a full 28 grocery cart?
A steel cable with total length 30 m and mass 100 kg is connected to two poles. find the wavelength of the resulting wave on the cable
A block of mass M=0.20 kg is attached to a spring with force constant k=12.0 N/cm. Calculate the period the resulting oscillations and the total energy of the system assuming no damping
CA particle with a charge of = -5.40 is moving in a uniform magnetic field of -1.21. The magnetic force on the particle is measured to be ?7.60×10?7. calculate the x component of the velocity of the particle
one mole of an ideal gas at 1 atm and 0 C is compressed isothermally from 50 L to 20 L. What is the change of internal energy for this gas
Heather and Mathew walked eastward with a speed of 9.8 m/s. If it takes those 34 min. to walk to the store, how far have they walked.
a heavy piece of machinery is raised by sliding it a distance d = 14.9 m along a plank oriented at angle ? = 25.7° to the horizontal. How high above its original position is it raised
An intergalactic rock star bangs his drum every 1.50 s. How fast is the rock star moving relative to the earth
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