Three 7.0-? resistors are connected in series. What is their equivalent resistance?
a. 21 ?
b. 7.0 ?
c. 16 ?
d. 2.3 ?
e. 10 ?
a
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Simple Harmonic Motion: A point on the string of a violin moves up and down in simple harmonic motion with an amplitude of 1.24 mm and a frequency of 875 Hz.(a) What is the maximum speed of that point in SI units?(b) What is the maximum acceleration of the point in SI units?
What will be an ideal response?
As shown in the diagram, you've just thrown a baseball toward Al at 100 km/hr, while he is moving away from you to the right at 90 km/hr. According to Al, what is the baseball doing?
A) traveling to the right at 10 km/hr B) traveling to the right at 100 km/hr C) staying stationary D) traveling to the right at 190 km/hr
What temperature has the Big Bang cooled to by now?
A) 1.4 K B) 5,800 K C) about 3,000 K D) about 300 K E) just over 2.7 K
A current carrying circular loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense
What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field A) circles the loop in a clockwise direction. B) circles the loop in a counterclockwise direction. C) points straight up. D) points straight down. E) points toward the east.