A disk (radius = 8.0 cm) that rotates about a fixed axis starts from rest and accelerates at a constant rate to an angular velocity of 4.0 rad/s in 2.0 s. What is the magnitude of the total linear acceleration of a point on the rim of the disk at the instant when the angular velocity of the disk is 1.5 rad/s?
A. 24 cm/s2
B. 16 cm/s2
C. 18 cm/s2
D. 34 cm/s2
E. 44 cm/s2
Answer: A
You might also like to view...
What originally caused the sun to heat up?
A) The gases from which it formed had already been heated by the Big Bang. B) A nearby supernova explosion that occurred during the early stages of the formation of the sun. C) Nuclear fusion reactions that occurred during the time when the sun's gases were spread out and beginning to fall together by gravitational attraction. D) As the sun's gases gathered together by their own gravity, they accelerated inward and collided. E) Electromagnetic radiation from outside the sun heated the sun's gases as they gathered together.
The total kinetic energy in one mole of an ideal gas is 4,000 J. If the gas is nitrogen, what is the root mean square velocity of an individual particle in the ideal gas? (N2 = 28u)
A. 678 m/s B. 545 m/s C. 486 m/s D. 402 m/s E. 376 m/s
A ball vibrates back and forth from the free end of an ideal spring having a force constant (spring constant) of 20 N/m. If the amplitude of this motion is 0.30 m, what is the kinetic energy of the ball when it is 0
30 m from its equilibrium position? A) 0.00 J B) 0.22 J C) 0.45 J D) 0.90 J E) 1.4 J
The theory of matter waves was first developed by
a) Heisenberg b) Einstein c) Schrödinger d) de Broglie