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A small bridge, supported by piers at each end, is being crossed by a 25 ton truck and semitrailer. If the bridge is 150 ft long and the center of mass of the truck and trailer is 50 ft from the left end, calculate the amount of the load carried by each pier.
500 grams of water initially at 3.00 c and a 10.0 gram ice cube at 0.00c are placed together in an insulated styrofoam cup of negligible heat capacity. find the final temperature of the contents of the cup
two small plastic balls hang from the threads of negligible mass. each ball has a mass of 0.14 g and a charge of
question a swimmer heading directly across a river 200 m wide reaches the opposite bank in 6 min 40 s. she is swept
An aging coyote cannot run fast enough to catch a roadrunner. He purchases on eBay a set of jet-powered roller skates, Determine the minimum speed the roadrunner must have to reach the cliff before the coyote
If the frequency that is supplied is set at the circuit's resonance frequency, what is the rms voltage across each of the circuit elements
A layer of oil with density 800 kg/m^3 floats on top of a volume of water with density 1,000 kg/m^3. What is the density of the block
If the driver of the car slams on the brakes, what is the minimum constant acceleration he must undergo to stop short of the moose and avert an accident?
When cars are equipped with flexible bumpers, they will bounce off each other during low-speed collisions, thus causing less damage. Find the speed of the lighter car just after the collision
The work function for potassium is 2.25eV. A beam with a wavelength of 400nm and an intensity of 10^-9W/m^2. find the maximum kinetic energy of the photelectrons
A 6 kg sled is initially at rest on a horizontal road. The sled is pulled a distance of 2.8 m by a force of 36 N applied to the sled at an angle of 30o to the horizontal. Find the change in the kinetic energy of the sled
consider a 2210 lb automobile clocked by law enforcement radar at a speed of 85.5 mph. if the position of the car is
A monochromatic parallel beam of light of wavelength 633 nm is incident on totally reflecting plane mirror.angle of incidence is 60 degree. and number of photon striking per second is 1X10^19.calculate force exerted by light beam on mirror
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