Do explosions conserve momentum?
A. No, because objects can go from stationary to moving.
B. Only for rockets.
C. Only if the original object is stationary.
D. Yes, because all forces are internal to the system.
Answer: D. Yes, because all forces are internal to the system.
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The primary of an ideal transformer has 100 turns and its secondary has 200 turns. If the input voltage to the primary is 100 V, we can expect the output voltage of the secondary to be
A) 50 V. B) 100 V. C) 200 V. D) none of the given answers.
A 15-?F capacitor and a 30-?F capacitor are connected in series, and charged to a potential difference of 50 V. What is the resulting charge on the 30-?F capacitor?
a. 0.70 mC b. 0.80 mC c. 0.50 mC d. 0.60 mC e. 0.40 mC
Vision Problems: A person is nearsighted with a far point of 75.0 cm.(a) What focal length contact lens is needed to give him normal vision?(b) What is the power of the corrective lens?
What will be an ideal response?
The photoreceptors responsible for color vision are called ______________
Fill in the blank(s) with correct word