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The 1994 Winter Olympics included the aerials competition in skiing. In this event skiers speed down a ramp that slopes sharply upward at the end. The sharp upward slope launches them into the air, where they perform gymnastic manoeuvres. In the women's competition, the end of a typical launch ramp is directed 65°above the horizontal. With this launch angle, a skier attains a height of 10 m above the end of the ramp. What is the skier's launch speed?
At low speed, air resistance is a force proportional to the velocity v of an object: F = -kv. Is this force conservative? What is the escape velocity (in m/s) from the Sun (M =2.0E30 kg) of an object that is a distance 9.1E7 km from the center of the..
Two stationary positive point charges, charge 1 of magnitude 3.10 nC and charge 2 of magnitude 1.74 nC, are separated by a distance of 36 cm. An electron is free from rest at the point midway between the two charges, and it moves along the line con..
What is the electric potential energy of three equal positive charges of 1.33 µC while they are arranged to form a triangle 2.10 x 10-3 m on a side.
An electron with 184eV of kinetic energy in free space passes over a finite potential well 72eV deep that stretches from x=0 to \(x = 0.5\) nm. What is the electron's wavelength in free space
A small town stores its drinking water in a tower. What should be the tower's height
a 3-g bullet flying at 420 ms hits a 2.2-kg aluminum block and embeds itself in the aluminum. after everything has come
An electron has an initial velocity of 3.00 multiplied by 106 m/s in a uniform 10.0 multiplied by 105 N/C strength electric field. How long does it take the electron to come to rest
You wish to determine the height of the smokestack of a local coal burning power plant. determine the height of the smokestack
A 250 kg space probe weighs 935N on thesurface of Mars. What is the gravitational field strength on the surface of Mars
a uniform electric field exists between two conducting plates separated by 1.9 mm. a dust grain with charge 65 nc nano
A solenoid 3.74 cm in diameter and 20.4 cm long has 233 turns and carries a current of 11.5 A. Calculate the magnetic flux through the circular cross-sectional area
A brass wire can withstand a tensile force of 500 N without breaking. What is the minimum diameter the wire can have
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