Hello, please help me with this problem. thanks :mad:
A 22.0 kg wheel, essentially a thin hoop with radius 1.00 m, is rotating at 230 rpm. It must be brought to a stop in 10 s. How much work must be done to stop it? What is the required power?
You place 2 beakers at 25 degrees celsius on a hot plate.
Beaker A = 100.00 mL liquid Mercury
Beaker B = 100.00 mL liquid Water
Each absorb 15 KJ of heat.
What is the final temp. of each liquid?
A proposed space station includes living quarters in a circular ring 50.3 m in diameter. At what angular speed should the ring rotate so the occupants feel 0.411 g where g is the gravitational acceleration on the surface of the Earth?
A bicycle has wheels with a diameter of 0.620 m. It accelerates uniformly and the rate of rotation of its wheels increases from 183 rpm to 275 rpm in a time of 20.7 s. Find the linear acceration of the bicycle.
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 10.5 m and, in starting, rotates according to Θ(theta) = 0.13t^2, where t in seconds gives Θ in radians. When t = 5.0 s, what are the astronaut's angular velocity?
What is the astronauts linear speed?
What is...