Which statement is incorrect? The gravitational force on an orbiting satellite due to the Earth
a. aims toward the center of the Earth.
b. depends on the Earth's mass.
c. depends on the satellite's mass.
d. depends on the distance between the Earth and the satellite.
e. none of the above
e
RATIONALE: A - D are all true.
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What will be an ideal response?
Photoelectric Effect: A photocathode whose work function is 2.9 eV is illuminated with white light that has a continuous wavelength band from 400 nm to 700 nm. What is the range of the wavelength band in this white light illumination for which photoelectrons are not produced? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)
A. 430 nm to 700 nm B. 400 nm to 480 nm C. 430 nm to 480 nm D. 400 nm to 430 nm E. 480 nm to 700 nm
A 1200 kg car is moving at 5.0 m/s EAST. It strikes an 1800 kg car at rest. The cars have an elastic collision and move in the EAST or WEST direction. The velocity of the 1200 kg car after the collision is
A. 4.0 m /s EAST. B. 1.0 m/s EAST. C. 4.0 m/s WEST. D. 1.0 m/s WEST. E. 3.00 m/s EAST.
The planets never travel in a straight line as they orbit the Sun. According to Newton's second law of motion, this must mean that ________
A) the planets are always accelerating B) a force is acting on the planets C) the planets will eventually fall into the Sun D) the planets have angular momentum