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Q. A woman rides a carnival Ferris wheel at radius 20 m, completing 4.7 turns about its horizontal axis every minute. What are (a) the period of the motion, and the magnitude of her centripetal acceleration at (b) the highest point and (c) the lowest point?
Q. A piece of Nichrome wire has a radius of 5.0 x10-4 m. It is used in a laboratory to make a heater that dissipates 2.00 x10^2 W of power when connected to a voltage source of 120 V. Ignoring the effect of temperature on resistance, estimate the necessary length of wire.
A 19 g bullet is shot into a 5270-g wooden block standing on a frictionless surface. The block, with the bullet in it, acquires a velocity of 2.4 m/s. compute the velocity of the bullet before striking block.
What is linear charge density of the insulating shell
A race car has a mass of 718 kg. It starts from rest and travels 45.0 m in 3.0 s. The car is uniformly accelerated throughout the entire time. What net force is exerted on it.
The dummy in a crash test has a head of mass 3 kg. The dummy is strapped in firmly so that the body does not move. The car's forward speed changes from 24 m/s to zero in 0.23 s.
A small rocket to gather weather data is launched straight up. few seconds into the flight, its velocity is 110 and it is accelerating at 17 . At this instant, the rocket's mass is 50 and it is losing mass at the rate of 0.45 as it burns fuel.
Young's double-slit experiment is performed with 570 nm light and a distance of 2.00 m between the slits and the screen. The tenth interference minimum is observed 7.64 mm from the central maximum. Settle on the spacing of the slits.
A 13 g bullet traveling 217 m/s penetrates a 2 kg block of wood and emerges cleanly at 153 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges.
What is current in the coil
When blue light of wavelength 465 nm illuminates a diffraction grating, it produces a 1st order utmost but no 2nd order maximum.
How did Pavlov and Watson's focus on scientific inquiry of behaviours differ from earlier viewpoints of structuralisms, psychoanalysts, and functionalists.
The cannonball is fired at a speed of 53.0 and an angle of 31 above horizontal. A cannonball that was accidentally dropped hits the moat below in 1.40. How far from the castle wall does the cannonball hit ground.
suppose an electric motor continuously operating with average power 4.65 kW runs the pump. Find its efficiency.
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