In twice the time, an object will attain a speed that is
A) four times as fast.
B) 16 times as fast.
C) 12 times as fast.
D) twice as fast.
E) eight times as fast.
D
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Which of these is/are not true of nuclear fission reactors?
a. Their intended output is heat. b. They produce the majority of the electric energy used in the world. c. There is a small chance one could explode like an atom bomb. d. Some can produce or "breed" more nuclear fuel than they consume.
The kinetic energy of an electron in a Bohr orbit of the hydrogen atom is 8.57 × 10-20 J. What is the radius of the orbit?
A) 1.35 × 10-9 m B) 2.01 × 10-9 m C) 2.64 × 10-9 m D) 4.12 × 10-9 m E) 5.29 × 10-11 m
A charge of uniform density (0.80 nC/m) is distributed along the x axis from the origin to the point x = 10 cm. What is the electric potential (relative to zero at infinity) at a point, x = 18 cm, on the x axis?
a. 7.1 V b. 5.8 V c. 9.0 V d. 13 V e. 16 V
For total internal reflection, light is reflected and none is ______________
Fill in the blank(s) with correct word