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A wheel starts from rest and rotates with a fix angular acceleration about a fixed axis. It completes the first revolution 6.0 second after it started. Find how long after it started will the wheel complete the second revolution?
A 50 g ball is fired horizontally with initial speed v_0 toward a 110g ball that is hanging motionless from a 1.10 m-long string. The balls undergo a head-on, perfectly elastic collision, after which the 110g ball swings out to a maximum angle the..
A grandfather clock is controlled by a swinging brass pendulum that is 1.2 m long at a temperature of 21°C. What is the length of the pendulum rod
A 55.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of21.0 m. What is the centripetal acceleration of the child
Assume that light of wavelength 550 nm is being observed. Also suppose that diffraction effects, rather than atmospheric turbulence, limit the resolving power of the telescope. Find the greatest distance that these stars might be from the earth.
a ball is thrown upward from the ground with an initial speed of 25 ms at the same instant a ball is dropped from a
A railroad flatcar of weight 7840 N can roll without friction along a straight horizontal track. What is the change in velocity of the car
Consider a comet in a long, thin elliptical orbit with a semi-major axis of one AU. Illustrate what can you say about the sidereal period of this comet?
A uniform rod of mass m and length l is kept vertical with the lower end clamped. What wil be the linear speed of the free end at this instant
a childs toy consists of a m 32 g monkey suspended from a spring of negligible mass and spring constant k. when the
A bullet is shot straight up into the air. It takes 30.5 s for the bullet to go straight up and fall back straight down to its starting position. At what initial speed (in m/s) was the bullet shot into the air
Two small particles have charges Q1 = +2.5 C and Q2 = 5.5 C. If the magnitude of the electric force between the particles is 110 N, what is the distance between the particles?
A coin is placed 8 cm in front of a concave morror. T he mirror produces a real imege that has the diameter 4 times larger than that of the coin. What is the image distance.
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