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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 acrobatic maneuvers. In the women's competition, the end of a typical launch ramp is directed 64° above the horizontal. With this launch angle, a skier attains a height of 11 m above the end of the ramp. What is the skier's launch speed?
What mass (in grams) of steam at 100°C must be mixed with 124 g of ice at its melting point, in a thermally insulated container, to generate liquid water at 37.0°C.
When people sleep, their metabolic rate is about 2.6 10-4 C/(s • kg). How many Calories does an 83 kg person metabolize though getting a good night's sleep of 9.0 hours.
The situation just described occurs when the plane is above a point on the ground that is two-thirds of the way from the antenna to your house. determine the wavelength of the radio waves?
An ideal gas occupies a volume of 1.8 cm3 at 20°C and atmosphericpressure. Determine the number of molecules of gas in the container
A spaceship, traveling at 0.56c towards a stationary enemy station, What is the speed of the projectile relative to the station
a catapult launches a test rocket vertically upward from a well giving the rocket an initial speed of 80.2 ms at ground
question11. the moon has a diameter of 3.48 106 m and is a distance of 3.85 108 m from the earth. the sun has a
A hydrogen atom is in its second excited state (n = 3). calculate angular momentum of the electron
A typical ten-pound car wheel has a moment of inertia of about 0.35kg?m2. What is the rotational kinetic energy K of the rotating wheel
q1. three long wires wire 1 wire 2 and wire 3 hang vertically. the distance between wire 1 and wire 2 is 20.0 cm. on
The total length of a bike trip is 300 km. Suppose you take this tour and your bike has wheels with a diameter of 80 cm. How many revolutions will the wheels make
A skier is gliding along at 2.9 on horizontal, frictionless snow. He suddenly starts down a incline. His speed at the bottom is 11. How long does it take him to reach the bottom
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