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A student’s car stalls right in front of a speed bump while she is on her way to physics class. To pull it over the bump, she ties a cable to her bumper and to a nearby tree, and pulls with a force, F, of 77.0 lbs (343 N) at the midpoint in a perpendicular direction. If is 11.1 degree, what is the size of the force pulling the car in lbs
is it correct to say the difference in the patterns produced by monochromatic and white light is caused by the fact
an object is formed by attaching a uniform thin rod with a mass of mr 6.69 kg and length l 5.44 m to a uniform sphere
The potential equals 7.52 V at the midpoint between two point charges that are 0.95 m apart. One of the charges is 1.10 10-9 C. Find the value of the other charge.
Infrared light of wavelength 1.17 um illuminates a 0.34-mm-diameter hole. What is the angle of the first dark fringe in degrees
Basic science concepts in optics like Which types of electromagnetic radiation can be seen from the surface of Earth.
the noise level coming from a pig pen with 231 pigs is 74db.assuming each of the remaining pigs squeal at their
find the required angular speed revmin of an ultra-centrifuge for the radial acceleration of a point 2.50cm from the
A 2.74 kg block initially at rest is pulled to the right along a horizontal surface by a constant, horizontal force of 14.6 N. Find the speed of the block after it has been moved 3.26 m
The earth orbits the sun once a year (3.16 x 10^7 s) in a nearlycircular orbit of radius 1.50 x 10^11 m. With respect to the sun,determine the magnitude of the earth’s centripetalacceleration.
A certain nuclear power plant has an electrical power output of 420 MW. The rate at which energy must be supplied to the plant is 1,570 MW. At what rate is thermal energy expelled by the plant
the total liftoff mass of the space shuttle orbiter is 11000kg. the combined thrust of the three on board liquid fuel
100 Joules of heat energy are transferred to 20g of mercury. By how much does the temp. increase
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