Can an element decay "forward" in the periodic table, to a higher atomic number?
A) No, in fact elements cannot alter their atomic number by radioactive decay.
B) No, but an element can decay to a lower atomic number.
C) Yes, by alpha decay.
D) Yes, this can occur by means of both beta decay and alpha decay.
E) Yes, by beta decay.
E
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When a rigid body rotates about a fixed axis all the points in the body have the same tangential speed
Indicate whether the statement is true or false
Compared to clocks in a stationary reference frame, clocks in a moving reference frame run
A) slower. B) faster. C) at the same rate.
What should be the resistance of a light bulb in order for it to draw a 2 amp current when plugged into a 120-volt outlet?
A) 1/60 ohm B) 60 ohms C) 1/30 ohm D) 30 ohms E) 480 ohms
A girl lifts a ball by means of a string attached to the ball. The string exerts a 20 newton force on the ball. The ball weighs 8 newtons. The net force on the ball is
A) zero. B) 28 newtons. C) 12 newtons. D) 20 newtons. E) 8 newtons.