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A hunter is riding an elephant of height 4m moving in straight line with uniform speed of 2m/s. A deer running with a speed V at a distance of (4squaroot5)m moving perpendicular to direction of motion of the elephant. If hunter can throw his spear with a speed 10m/s relative to elephant, then at what angle to its direction of motion must he thrown w.r.t elephant his spear horizontally for a successfull hit. Find also the speed V of deer.
If a car travelling at 30m/s will skid 18.00 m when its brakes lock and the car slides, how far would it skid if it is travelling at 40 m/s when its brakes lock? (This question is typical on some driver's license exams. Note: 10 m/s = 22 mph)
How much Electrical Potential Energy is stored in the equilateral triangle? (The answer is -405 Joules, but I can't figure out how to get that).
You take the elevator to the roof of midtown skyscraper that is 100 meters high. What was the velocity of your souvenir just before it hit the ground
Two parallel plates, each of area 8.17 cm2, are separated by 6.20 mm, Calculate the amount of the electric charge stored on each plate
A 11.4-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 12.1 m/s, find the rotational kinetic energy
A 350 N beam of uniform density is hinged on a wall. A 200 N object hangs off the end of the beam at a distance l from the wall. A cable supports the beam by an upward tension of T at a distance of 2 l /3 from the wall and at an angle of 168 degrees..
if a lightning strike can be approximated by considering a cloud and the earth as a parallel plate capacitora find the
A quarter circle of electric charge with a radius of 2.5 m has a uniform charge density of +0.7x10^-6 C/m. At the center of the circle is located a +0.3C charge
Two point charges of equal magnitude are 6.1 cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 37 N/C
An electron with a speed of 7.98 × 108 cm/s in the positive direction of an x axis enters an electric field of magnitude 2.25 × 103 N/C, how much time will have elapsed
question1a 1.10 m long straight wire section has a resistance r 46.0 ohm and is linked with conducting wire of
A string on a musical instrument is 20cm long and is fastened at both ends. The total mass of the string is .02 kilograms. We desire to cause the string to vibrate at a fundamental tone of 500Hz when it is plucked or bowed. To what tension should ..
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