What is a molecule?
A) a group of two or more atoms bound together
B) a particle that is part of an atomic nucleus
C) the smallest known particle in nature
D) an atom that has lost or gained an electron so that it is electrically charged
E) a form of an atom that has more or less neutrons than normal
A) a group of two or more atoms bound together
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A projectile is projected from the origin with a velocity of 45.0 m/s at an angle of 30.0 degrees above the horizontal. What is the velocity when the projectile hits the ground?
A. Vx = 35.7 m/s, Vy = -22.5 m/s B. Vx = 39.0 m/s, Vy = -22.5 m/s C. Vx = 35.7 m/s, Vy = -39.0 m/s D. Vx = 39.0 m/s, Vy = -35.7 m/s E. Vx = 22.5 m/s, Vy = -22.5 m/s
Consider a high-speed bus colliding head-on with an innocent bug. The force of impact splatters the unfortunate bug over the windshield. Which is greater, the force on the bug or the force on the bus?
A. Bug B. Bus C. Both are the same. D. Cannot say
While often called twins, Uranus and Neptune still have significant differences. Discuss some of them
What will be an ideal response?
The standard unit of time is the
a. hour. b. day. c. second. d. minute.