Physics, 22.08.2019 00:30 zeesharpe05
Ahorizontal turntable (disc) of mass = 5kg, radius = 1.80m, is spinning about its center at the rate of 5 rad/s. a lump of mass 0.800 kg falls on it vertically and sticks to it at a distance of 1.20 m from the center.
a) calculate the new angular speed of the disc.
b) what is the new rotational kinetic energy of the disc+lump
Answers: 3
Physics, 22.06.2019 14:30
Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.
Answers: 2
Physics, 22.06.2019 19:40
Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.
Answers: 2
Ahorizontal turntable (disc) of mass = 5kg, radius = 1.80m, is spinning about its center at the rate...
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