Suppose you have a small cart at rest. You have two different objects that you might throw at the cart to get it moving: a 57-g tennis ball and a 57-g lump of sticky clay. Other things being equal, which should you throw at the cart to maximize the cart’s final speed?
A. The tennis ball
B. The clay
C. It doesn’t matter: both will have the same effect.
A. The tennis ball
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(a) Find the image position. Real or Virtual? (b) Find the image size. Erect or Inverted?
Two tuning forks produce sounds of wavelengths 3.4 m and 3.3 m. Assuming the speed of sound is 340 m/s, the beat frequency produced is
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A person is walking outdoors on a cold day when the temperature is -20°C. He is breathing at the rate of 16 breaths per minute, and each time he breathes in he inhales 0.0050 m3 of air
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