You and your friend put the palms of your hands together and push equally on each other so your hands don't move. Which law(s) does this follow? Choose the best answer. I. Newton's first II. Newton's second III. Newton's third IV. Newton's law of gravitation
a. I, III b. II, IV
c. I, II, III, IV d. III
d
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The compositions of dark clouds can be determined through absorption spectra
Indicate whether the statement is true or false
Which of the following does not yield information on jovian planet interiors?
A) Earth-based observations of the mass and size of the planets B) spacecraft measurements of magnetic and gravitational fields C) laboratory studies and theoretical models D) spectroscopy of the cloud layers E) detailed observations of planetary shapes
A bulb is designed for 100 W at 130 V rms. What is the power dissipated by this bulb if it is used in a 120 V rms circuit?
A. 169 W B. 130 W C. 100 W D. 85.0 W E. it will blow out
Electromagnetic waves
A. need a medium such as water to propagate B. travel faster in a medium such as water than they do in a vacuum C. are longitudinal waves D. travel at the same speed in a vacuum regardless of wavelength