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The angle of refraction for a ray of light traveling through an ice cube is 35 degrees,
(a) now suppose the ice melts, but the angle of refraction remains the same, is the corresponding angle of incidence greater than, less than, or the same as it was for the ice? Explain.
(b) Calculate the angle of incidence for part (a).
A person exerts a force of 48 N on the endof a door 86 cm wide. What is the magnitude of the torque if the force is exerted perpendicular to the door?
A playground merry-go-round has radius 2.20m and moment of inertia 2800 kg*m^2 about a vertical axle through its center, What is the average power supplied by the child
questiona professional race-car driver buys a car which can accelerate at 89.0 ms2. the racer decides to race beside
a baseball pitcher throws a 145 g baseball parallel to the ground with a speed of 36.29 ms in the x direction. the
A woman drives a car from one city to another with different constant speeds along the trip. She drives at a speed of 70.0 km/h for 15.0 min, 90.0 km/h for 20.0 min, What is the average speed for the entire trip
What force is exerted by the water on the window of an underwater vehicle at this depth if the window is circular and has a diameter of 35.7 cm
A submarine submerges to a depth of 144 meters. Compute the pressure on the submarine. State your answer in both Pascal and atmospheres.
A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 7.50×10?3 less than that at sea level. What is the observatory's altitude
where the woman falls down from a great height, and comes to a full stop. For which case is the change in the woman's momentum the largest? For which case is the Impulse the largest?
A circular disk 0.3 in diameter, pivoted about a horizontal axis through its center , has a cord wrapped around its rim. what is the weight of the rod
When the Earth, Moon, and Sun form a right triangle with the Moon located at the right angle, as shown in the figure below, the Moonis approaching its third quarter. (The Earth is viewed here from above its north pole.)
The potential in a region between x = 0 and x = 6.00 m has a linear relation, Calculate the potential at the following positions: x = 0, 3.00 m and 6.00 m and also find magnitude and direction
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