When a body moves with uniform acceleration, the net force on it is zero
a. True
b. False
Indicate whether the statement is true or false
False
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For the following balanced reaction, which of the following is a gas?
2 Na(l) + Cl2(g) ? 2 NaCl(s) A) Na B) 2 Na C) Cl2 D) Cl E) NaCl
A force of 1 N accelerates a 1-kg mass at 1 m/s2. The acceleration of a 2-kg mass acted upon by a force of 2 N is
A) half as much. B) twice as much. C) the same. D) none of the above
The overall helium fusion reaction is
A) three helium nuclei fusing to form one carbon nucleus. B) two helium nuclei fusing to form one beryllium nucleus. C) two hydrogen nuclei fusing to form one helium nucleus. D) four helium nuclei fusing to form one oxygen nucleus.
A totally absorbing surface having an area of 7.7 cm2 faces a small source of sinusoidal electromagnetic radiation that is 2.4 m away. At the surface, the electric field amplitude of the radiation is 84 V/m
(c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2) (a) What is the radiation pressure exerted on the surface? (b) What is the total power output of the source, if it is assumed to radiate uniformly in all directions? What will be an ideal response?