The mass of 1 cubic meter of fresh water is 1,000 kg. At the top of a 100 m hydroelectric dam the potential energy of the cubic meter of water is
a. 10,000 N. b. 98,000 N.
c. 100,000 N. d. 980,000 N.
d
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What will be an ideal response?
A radioactive isotope of atomic number Z emits a beta-minus particle, and then the daughter nucleus emits a gamma ray. What is the atomic number of the resulting nucleus after both processes?
A) Z - 3 B) Z + 1 C) Z - 2 D) Z - 1
An object that weighs 75.0 N is pulled on a horizontal surface by a horizontal pull of 50.0 N to the right. The friction force on this object is 30.0 N to the left. The acceleration of the object is closest to
A) 0.267 m/s2 B) 1.07 m/s2 C) 2.61 m/s2 D) 10.5 m/s2
Saturn has a magnetic field whose strength is similar to the Earth's
Indicate whether the statement is true or false