Lab: Magnetic and Electric Fields — Cumulative exam Answers
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Nolan set up the equipment shown in order to induce a current in a wire.
A
The wire needs to be coiled less tightly.B
The wire needs to be straight, not coiled.C
The magnet needs to be moved through the coils of wire.D
The magnet needs to be held above the coils of wire.22
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Briana builds a circuit that has a resistance of 8.0 . What voltage should she apply to have a current of 0.8 A?
A
0.10 VB
6.4 VC
7.2 VD
10 V23
Incisors (front teeth) act as wedges in the human body. Which change would increase the mechanical advantage of incisors?
A
a decrease in the distance of the teeth from the fulcrumB
an increase in the distance of the teeth from the fulcrumC
an increase in the thickness at the widest part of the teeth and no change in the length of the teethD
an increase in the length of the teeth and no change in the thickness at the widest part of the teeth24
What happens to the sound wave in echolocation?
A
It releases energyB
It is reflectedC
It is refractedD
It is absorbed25
Theresa comes up with four examples of waves: sound wave, ocean wave, light wave, and hand wave. Which of Theresa's examples is not an actual scientific wave?
A
Sound waveB
Ocean waveC
Light waveD
Hand waveDid you find these answers helpful?
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