If a turntable's rotational speed is doubled, then the linear speed of a pet hamster sitting on the edge of the record will
A) double.
B) halve.
C) remain the same.
Answer: A
You might also like to view...
How is the Moon's mantle different from Earth's?
A. The lunar mantle is too cold to form convection cells. B. The lunar mantle extends to the center of the Moon. C. The Moon's mantle has a higher density than Earth's. D. The lunar mantle has a different composition than Earth's.
If y = 0.02 sin (30x ? 400t) (SI units), the velocity of the wave is
a. 3/40 m/s b. 40/3 m/s c. 60?/400 m/s d. 400/60? m/s e. 400 m/s
Radiation Activity: A radioactive source emits 2.4-MeV neutrons at the rate of 7100 neutrons per second. The number of atoms in the source is 2.6 × 109. What is the activity of the source, in curies (Ci)? (1.00 Ci = 3.70 × 1010 Bq)
A. 190 nCi B. 1900 nCi C. 19 nCi D. 71 nCi E. 710 nCi
A 5.0-liter gas tank holds 1.4 moles of helium (He) and 0.70 moles of oxygen (O2 ), at a temperature of 260 K
The atomic masses of helium and oxygen are 4.0 g/mol and 16.0 g/mol, respectively. Avogadro's number is 6.022 × 1023 molecules/mol and the Boltzmann constant is 1.38 × 10-23 J/K. The total random translational kinetic energy of the gas in the tank is closest to A) 6.8 kJ. B) 6.1 kJ. C) 7.6 kJ. D) 8.3 kJ. E) 9.1 kJ.