The Moon contains small amounts of frozen water that is mixed in with its rocks.
Answer the following statement true (T) or false (F)
True
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Rutherford's experiment, in which he fired alpha particles of 7.7 MeV kinetic energy at a thin gold foil, showed that nuclei were very much smaller than the size of an atom because
a. some alpha particles passed through the foil undeflected. b. some alpha particles were deflected backwards. c. some alpha particles were captured by the gold nuclei. d. the alpha particles could not get closer than 10-10 m to the gold nuclei. e. the alpha particles split into deuterium nuclei when they encountered the gold nuclei.
Venus is the planet closest to Earth in mass
a. True b. False Indicate whether the statement is true or false
A uniform disk with mass M and radius R sits at rest on an incline 30° to the horizontal. A string is wound around disk and attached to top of incline as shown. The string is parallel to incline. The friction force acting at the contact point is:
Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t. The potential energy of the crate is mgd
Indicate whether the statement is true or false