A 2.00-kg solid sphere of radius 5.00 cm rolls down a 20.0° inclined plane starting from rest
(a) What is the magnitude of the acceleration of the center of mass of the sphere?
(b) How far down the plane does it roll without slipping in 1.00 s?
(a) 2.44 m/s2
(b) 1.22 m
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Which of the following statements about the Sun is an inference from a model, not an observation?
A) The photosphere emits visible light. B) The Sun emits neutrinos. C) The convection zone is cooler than the radiation zone. D) The corona is hotter than the photosphere.
Earthquake waves are classified as P waves and S waves. Which of the following statements is true about these waves?
A. The P wave is transverse as is the S wave. B. The P wave is longitudinal as is the S wave. C. The P wave is transverse and the S wave is longitudinal. D. The P wave is longitudinal and the S wave is transverse. E. Both the P and S waves are mixtures of longitudinal and transverse waves.
Suppose one twin takes a ride in a space ship traveling at a very high speed to a distant star and back again, while the other twin remains on Earth. The twin that remained on Earth predicts that the astronaut twin is
A) younger. B) the same age. C) older. D) cannot be determined from the given information
If we see two objects that have different colors, the light waves coming from them have different ____________
Fill in the blank(s) with correct word