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A tourist being chased with an angry bear is running in a straight line toward his car at a speed of 3.7 m/s. The car is a distance d away. The bear is 28 m behind the tourist and running at 6.0 m/s. The tourist reaches the car safely. What is the maximum possible value for d?
A Carnot engine absorbs 950J of heat each cycle and provides 340J of work. How much heat is rejected each cycle
Suppose that 250g of water at 85oC is mixed with 25g of ice at 0oC in an insulated container of negligible heat capacity. How much of the ice has melted
A 5.0 g hollow plastic ball is attached by a thread to the bottom of a beaker. Determine the diameter of the ball
A cart loaded with bricks has a total mass of 18 kilogram and is pulled at constant speed by a rope. Find how much work is done on the cart by the rope
A pitcher throws horizontally a fast ball at 146 km/h toward home plate, which is 18 m away. find how far the ball drops because of gravity by the time it reaches home plate
Two isotopes of carbon, carbon-12 and carbon-13, have masses of 19.93 × 10-27 kg and 21.59 × 10-27 kg, respectively. Determine the spatial separation between the two isotopes
A 25.0g arrow is shot through a 7.8 cm apple. If the arrow enters the apple at 38.8 m/s and emerges with a speed of 30.10m/s in the same direction, what is the magnitude of force with which the apple has resisted the arrow.
A 1360 kg geosynchronous satellite orbits a planet similar to Earth at a radius 1.97 × 105 km from the planet's center. What is the force acting on this satellite
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the period of a satellite in a geosynchronous orbit
As a spacecraft approaches a planet, the rocket engines on it are fired (turned on) to slow it down so it will go into orbit around the planet. how long (in minutes) must the engines be fired
A meter stick of weight W leans away from a wall. The 0cm line is against the wall at the floor and it makes an angle theta with the wall. It is kept from falling by a horizontal string connected to the 80cm line. What is the tension (T) in the strin..
An optometrist has a choice to give a pacient either regular glasses or contact lenses to correct nearsightedness. Usually, regular glasses sit a few centimeters in front of the eye and contact lenses right on the eye. What do you think, the power..
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