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A 40 figure skater is spinning on the toes of her skates at 0.60 . Her arms are outstretched as far as they will go. In this orientation, the skater can be modeled as a cylindrical torso (35 , 20 average diameter, 160 tall) plus two rod-like arms (2.5 each, 65 long) attached to the outside of the torso. The skater then raises her arms straight above her head, where she appears to be a 45 , 20--diameter, 200--tall cylinder.
Ray of light leaves point A and reflects from mirror and travels to point B. Point B is level with bottom of mirror and distance between the two is 30 cm, How far from bottom does the light ray hit the mirror
A novice skier starting from rest slides down a frictionless 32 degree incline whose vertical height is 125 meters
A 23g bullet traveling 260 m/s penetrates a 2.7 kg block of wood and emerges cleanly at 205m/s. how fast does it move after the bullet emerges
Two point charges q1= 2.0x10^-6 C and q2= -3.0x10^-6 C, Find the electric field and the electric potential at a point on the x-axis
A meterstick of negligible mass has a 0.25 kg mass at its 31 cm mark and a 0.40 kg mass at the 77 cm mark. Where should the fulcrum be so the meterstick is balanced
A ball is thrown horizontally from the top of a 60.0-m building and lands 100.0 m from the base of the building. Ignore air resistance. What must have been the initial horizontal component of the velocity
A trains whistle is a pipe thats open at only one end is emitting a sound at its second overtone. What is the length of the whistle in centimeters
Calculate the linear acceleration of a car, the 0.340 m radius tires of which have an angular acceleration of 7.0 rad/s2. Assume no slippage
A 0.07 kg bullet traveling at 602 m/s hits a 7.3 kg block of wood and stays in the wood. What is the velocity (speed)of the wood block
A source emits sound uniformly in all directions. A radial line is drawn from this source. On this line, determine the radialpositions of two points, 0.849 m apart, such that the intensitylevel at one point is 2.48 dB greater than that at the other.
Describe what quantity shows the measurements are consistent with a large amount of dark matter:
A transparent oil with index of refraction 1.18 spills on the surface of water (index of refraction 1.33), determine the thickness of the oil slick
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