Speedboat A negotiates a curve whose radius is 156 m. Speedboat B negotiates a curve whose radius is 186 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of the boats?

A propeller slows from 470 rev/min to 179 rev/min in 2.00 s. What is its angular acceleration?

21.2a: What is the peak current?

21.13a: What is the resistance value?

21.53b:What should its turn ratio be?

High Powered Industrial Laser's output is pulsed, and produces 460 nm monochromatic light. Power of each pulse described by the function: P = 100 - (t-C)^2 + 0.25 (t-C)^4. P is measured in watts and C = square root of 20 seconds. Laser turns on when t = 0 seconds and shuts off when t =...

A sculpture is 7.50m tall and has it CG located h=3 m above the center of its base. The base is a square with a side of d=13.6 m. To what angle can be sulpture be tipped before it falls over?

Neutron stars are extremely dense objects that are formed from the remnants of supernova explosions. Many rotate very rapidly. Suppose that the mass of a certain spherical neutron star is four times the mass of the Sun and that its radius is 12.4 km. Determine the greatest possible angular speed...

The light from a red laser pointer has a wavelength of about 600 nm. If this laser has a power of 0.18 mW, what is the momentum carried by a 3.9-s pulse of this radiation?

Two 2.3 kg balls are attached to the ends of a thin rod of negligible mass, 65 cm in length. The rod is free to rotate in a vertical plane about a horizontal axis through its center. With the rod initially horizontal as shown, a 44 gm wad of wet putty drops onto one of the balls with a speed of...