The path of a charged particle moving perpendicular to a uniform magnetic field will be a:
a. ellipse.
c. straight line.
b. circle.
d. parabola.
B
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What are the standard units for apparent brightness?
A) watts B) joules C) newtons D) watts per second E) watts per square meter
You hold a tennis racket in your hand. On top of the racket you have balanced a ball. Which statement is true?
a. The force of your hand on the racket and the force of the ball on the racket are equal and opposite. b. The force of the racket on your hand and the force of the ball on the racket are equal and opposite. c. The force of your hand on the racket and the force of the racket on the ball are equal and opposite. d. The force of the racket on your hand and the force of the racket on the ball are equal and opposite. e. The force of your hand on the racket and the force of the racket on your hand are equal and opposite.
On the H-R diagram, lines of constant radius slants down from left to right
a. True b. False Indicate whether the statement is true or false
The upper chromosphere is hot enough to emit X-rays
a. True b. False Indicate whether the statement is true or false