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The Mars rover "Spirit" has a mass of (approximately) 500 kg. Let R be the ratio of its weight on Mars to that on Earth, R = (weight on Mars)/(weight on Earth). Find R.
An unpolarized laser has an average power of .6 mW. At a distance of 10 m it forms a circle with a diameter of 2 mm. Intensity = 5.23 x 10^-4. Erms= .444 v/m. what is the speed of light in the polarizer
The pickup coil in an electric guitar contains 10,000 turns and hasa diameter of 1.6 mm. When the pickupcoil is very close to a guitar string, there is a field ofmagnitude B = 0.14 T in thecoil. If this steel string is vibrating at a frequency of1..
A transverse periodic wave described by the expression y = 5sin(? x + 10?t) (where y and x are in meters and t is in seconds) is established on a string. Calculate the length of the string
Dan is gliding on his skateboard at 2m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 7.00m/s (as measured by an observer on the ground). Dan's mass is 50 kg and the skateboard's mass is 5.00 kg.
when red light of wavelength 620 nm falls on a single slit it creates a central diffraction maximum that is 8.80 mm
Two converging lens with a focal lengths of 10 cm are separated by 10 cm. What is the position of the final image
An outfielder throws a baseball with an initial speed of 10m/s. An infielder catches the ball at the level 1m lower. Ignore air resistance and determine the speed of the ball and its kinetic energy when the infielder catches it. The mass of the ball ..
two point charges lie on the x-axis: .30 micro C at x=.15m and .11micro C at x=.70. find the place where the electric field is zero
A professor's office door is 0.9 wide, 2.0 high, and 4 thick; has a mass of 25; and pivots on frictionless hinges. A "door closer" is attached to door and top of the door frame.
Four objects are situated along the y axis as follows: a 1.94-kg object is at +2.98 m, Where is the center of mass of these objects
A 3.25G bullet picks up an electric charge of 1.75uC as it travels down the barrel of a rifle. Calculate the magnitude of the bullet's acceleration due to the magnetic force at the instant it leaves the rifle barrel
A boat is pulled by two locomotives through a canal of length 2.04 km, What is the net work done on the boat by the two locomotives
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