Two taut strings of identical mass and length are stretched with their ends fixed, but the tension in one string is 1.10 times greater than in the other
Waves on the string with the lower tension propagate at 35.2 m/s. The fundamental frequency of that string is 258 Hz. What is the beat frequency when each string is vibrating at its fundamental frequency?
A) 11.0 Hz
B) 9.00 Hz
C) 13.7 Hz
D) 12.6 Hz
E) 17.1 Hz
D
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State the law of conservation of electric charge
What will be an ideal response?
When we breathe we inhale oxygen, Image, and exhale carbon dioxide, Image, plus water vapor, ImageO. Which likely has more mass, the air that we inhale or the same volume of air we exhale? Does breathing cause you to lose or gain weight?
A) The air we inhale has more mass; Breathing causes you to lose weight. B) The air we exhale has more mass; Breathing causes you to lose weight. C) The air we inhale has more mass; Breathing causes you to gain weight. D) The air we exhale has more mass; Breathing causes you to gain weight.
Two particles, each having a mass of 3.0 ?g and having equal but opposite charges of magnitude 5.0 nC, are released simultaneously from rest when the two are 5.0 cm apart. What is the speed of either particle at the instant when the two are separated by 2.0 cm?
a. 2.1 m/s b. 1.5 m/s c. 1.8 m/s d. 2.4 m/s e. 3.2 m/s