A student is sitting on the right side of a school bus when it makes a right turn. We know that the force of gravity acts downwards and a normal force from the seat acts upwards. If the student stays in place when the bus turns, we also know that there must be
a. no other force on the student.
b. a force parallel to the seat directed forward on the student.
c. a force parallel to the seat directed to the left on the student.
d. a force parallel to the seat directed to the right on the student.
e. a force parallel to the seat in a direction between forward and left on the student.
D
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Which of the following statements regarding the motion of objects on the celestial sphere is true?
A. The Moon moves along the Celestial Equator. B. The stars move along the zodiac. C. The stars move parallel to the Celestial Equator. D. The Sun moves along the Celestial Equator.
What is the connection between an ENSO and the Peruvian anchovy catch? Explain
What will be an ideal response?
If the Earth had twice its present radius and twice its present mass, what change in weight would you experience? Explain
What will be an ideal response?
The fundamental frequency of a above middle C on the piano is 440 Hz. This is the tenor high A, but a convenient note in the mid-range of women's voices. When we calculate the wavelength, we find that it is
a. much shorter than the length of either a man's or woman's lips. b. shorter than the length of a man's lips, but about the length of a woman's lips. c. longer than a woman's lips, but about the length of a man's lips. d. much longer than the length of either a man's or a woman's lips. e. about the same length as either a man's or woman's lips.