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Rain appears to be falling at at angle of 37 degree with vertical to the driver of a car moving with a velocity 7m/sec. When he increases the velocity of the car to 25 m/sec, the rain again appears to fall at an angle 37 degree with vertical. What is the actual velocity of rain and its direction with vertical?
Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of -4q. Sphere B carries a charge of -9q. How much charge ends up on sphere C
q 1- how much pressure would be necessary to compress a quantity of mercury by 0.015 percent?2- two metal plates are
The space shuttle orbits at a distance of about 300 km above the surface of the earth. Find the speed of the shuttle
A laser used to weld detached retinas puts out 31 milliseconds long pulses of 640 nanometers light which average 0.71 Watt output during a pulse. Obtain how many photons does each pulse contain
You push your physics book 1.70 malong a horizontal table top with a horizontal force of2.20 N. The opposing force of frictionis 0.597 N. What is the total work done on the book
A spring of spring constant k = 340 Nm-1 is used to launch a 1.5-kg block along a horizontal surface by compressing the spring by a distance of 18 cm. If the coefficient of sliding friction between the block and the surface is 0.25, how far does the ..
If its mass is 56.0 kg, determine the average power developed by the cheetah during the acceleration phase of its motion. Express your answer in the following units. (a) watts (b) horsepower
What was the displacement of the spring. An elevator and its load have a combined mass of 1400 kg. Find out the tension in the supporting cable when the elevator, originally moving downward at 12 m/s, is brought to rest with constant acceleration i..
If the hypotenuse of a right triangle is 6.00cm long, and the opposite is 4.00. What is the angle facing the opposite
A 2.3cm high object is located 30cm from a diverging lens, whose focal length is 14cm. What is the height of the image produced by the lens
Adjacent antinodes of a standing wave on a string are 20.0 cm apart. How far apart are the adjacent nodes
A constant 3.80 Amp current moves along a straight wire that is perpendicular to a 2.00 T magnetic field. evaluate how much magnetic force will it experience
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