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An arrow, starting from rest, leaves the bow with a speed of25 m/s. If the average force exerted on the arrow by the bowwere tripled, all else remaining the same, with what speed wouldthe arrow leave the bow?
A child is sitting on the outer edge of a merry-go-round that is 18 m in diameter. If the merry-go-round makes 4.9 rev/min, what is the velocity of the child in m/s
A skier finds that she must give hersel a push to get started down ski slopes with angles less than 8 degrees. What is the coefficient of static friction between the skis and the snow
There are two major types of aberration (defective image formation) in lenses: spherical and chromatic. Spherical aberration comes from fact that a spherical lens has the property of focusing parallel rays to a single point only approximately.
A 45.0 g ball of copper has a net charge of 1.75 µC. What fraction of the copper's electrons have been removed
In a binary star system, two stars have elliptical orbits about the center of mass of the system. what is the change in the gravitational potential energy of the system
question1sarah age 55 is experiencing some hot flashes of menopause and wants to mange her symptoms without taking
The moment of inertia of a uniform ring is I (r) = M (r) * R^2 (r), where M (r) and R (r) denote the mass and radius of the ring. Compute the moment of inertia of this disk
Blood pressure is normally taken on the upper arm at the level of the heart, what would be the magnitude of the difference between this measurement of blood pressure and a normal blood pressure measurement
A 14,240N car is traveling along a highway at 95.0 kn/hr. If the driver immediately applies his breaks, what average force acted upon the car
Two racing boats set out from the same dock and speed away at thesame constant speed of 80.9 km/h for half an hour (0.500 h), theblue boat headed 29.2° south of west, and the green boat headed39.6° south of west.
What is its angular speed 0.1 seconds later?
A proton in the upper atmosphere moves at 8.6×105m/s , perpendicular to Earth's magnetic field, Find the curvature radius of the proton's trajectory
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