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A rubber ball is held 4.0 m above a concave spherical mirror with a radius of curvature of 1.5 m. At time equals zero, the ball is dropped from rest and falls along the principal axis of the mirror. How much time elapses before the ball and its image are at the same location?
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 20.0 m/s at an angle 54.0 degrees; What is the distance between the two girls
Find the radii of synchronous orbits about Jupiter and about the Sun. [Their mean rotation periods are 10 hours and 27 days, respectively. The mass of Jupiter is 318 times that of the Earth. The semi-major axis of the Earth's orbit, or astronomical u..
Two trains on separate tracks move toward one another. Train 1 has a speed of 100 km/h, train 2 a speed of 60.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1? (Suppose the speed o..
A 160 pound pilot of an airplane executes a constant speedloop-the-loop maneuver in a vertical plane. what is his apparent weight at the highest point
A positively charged oil drop is injected into a region of uniformelectric field between two oppositely charged, horizontallyoriented plates spaced 16 cm apart. If the electric force on thedrop is found to be 7.8 x 10-16 Nand the electric field m..
A solid ball and a hollow ball, each with a mass of 2.29 kg and radius 0.115 m, start from rest and roll down a ramp of length 2.77 m at an incline of 32.7°
A fish takes the bait and pulls on the line with a force of2.5 {\rm N}. What is the angular acceleration of the fishing reel
an amusement park ride consists of a large vertical cylinder that spins about its axis fast enough that any person
A Styrofoam box has a surface areaof 0.84 m2 and a wallthickness of 2.0 cm. find what is the thermal conductivity of the Styrofoam
A thin film of oil (n = 1.22) is located on smooth, wet pavement. When viewed from a direction perpendicular to the pavement, the film reflects most powerfully red light at 640 nm and reflects no light at 512 nm. What is the minimum thickness of the ..
how many sprints from rest to a speed of 5.7 ms would a 56-kg woman have to complete to burn off 5.0 x 102 calories?
Explain an experimental method for determining the center of mass of any object, including irregularly shaped objects.
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