The expression(s) indicating the mass number of a nucleus is
a. A
b. N
c. Z
d. Z + N
e. A – Z
A, D
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A rocket with a mass of 500 grams is launched straight up. It achieves a velocity of 20.0 m/s in 2.00 seconds. The average thrust force of the engines on the rocket is
A. 7.50 N. B. 9.90 N. C. 12.0 N. D. 13.5 N. E. 20.0 N
A certain test car can go from rest to 32.0 m/s in 3.88 s. The same car can come to a full stop from that speed in 4.14 s. What is the ratio of the magnitude of the starting acceleration to the stopping acceleration?
A) 0.937 B) 1.07 C) 0.878 D) 1.14
The images produced by _______________ reveal streamers in the corona that follow magnetic lines of force in the Sun's magnetic field
Fill in the blank(s) with correct word
Pressure in a Liquid: The deepest point of the Pacific Ocean is 11,033 m, in the Mariana Trench. What is the gauge pressure in the water at that point? The density of seawater is 1025 kg/m3.
A. 5.55 × 107 Pa B. 8.88 × 107 Pa C. 1.11 × 108 Pa D. 2.22 × 108 Pa E. 3.33 × 108 Pa