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A skier starts from rest at the top of a hill. The skier coastsdown the hill and up a second hill, as the drawing illustrates. Thecrest of the second hill is circular, with a radius of 31.5 m.Neglect friction and air resistance. What must be the height h of the first hill so that the skierjust loses contact with the snow at the crest of the second hill?
A dentist's drill starts from rest. After 2.70 s of constant angular acceleration it turns at a rate of 3.0 104 rev/min, Find the drill's angular acceleration
a square metal plate of edge length 11.0 cm and negligible thickness has a total charge of 4.00times10-6 c. estimate
A slender rod with a length of 0.300m rotates with an angular speed of 9.00 rad/s about an axis through one end and perpendicular to the rod. What is the induced emf in the rod
A horizontal board weighing 198 N is supported at points A and B. The plank serves as a platform for a painter, who weighs 558.5 N. Find out the maximum distance D, such that the plank would not tip, no matter where the painter stands.
a positively charged particle of mass 8.75 times 10-8 kg is traveling due east with a speed of 77.2 ms and enters a
Ground beef may be irradiated with high-energy electrons from a linear accelerator to kill pathogens. Estimate the temperature increase of the beef due to this procedure
A space station consists of two donut-shaped living chambers, Aand B, that have the radii shown in the figure. As the stationrotates, an astronaut in chamber A is moved 1.48 x 102 malong a circular arc. How far along a circular arc is an astronautin ..
It is possible to return the current in the bulb to the value calculated in part (a) by adding an inductor in series with the bulb and the capacitor. What is the value of the inductance of this inductor
A solid, uniform ball rolls without slipping up a hill, asshown in the figure . At the top of the hill, it is moving horizontally; then it goes over the vertical cliff. How fast is it moving just before it lands
This figure (|| = 10.5 m/s2) represents the total acceleration of a particle moving clockwise in a circle of radius r = 2.40 m at a certain instant of time. (a) For that instant, find the radial acceleration of the particle. m/s2 (toward the center) ..
Mars has an orbital period of 1.881 Earth years, Develop the relation between semimajor axis and inclination for a Mars circular sun-synchronous orbit
A satellite is placed in a circular orbit aboutEarth with a radius equal to one-half the radius of theMoon's orbit. What is its period of revolution in lunar months
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