The visible surface of the Sun has a temperature of about ______________ K
Fill in the blank(s) with correct word
6000
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The length of a certain wire is doubled and at the same time its radius is tripled. What is the change in the resistance of this wire?
A) It stays the same. B) It is reduced by a factor of 4.5. C) It is doubled. D) It is tripled. E) It is quadrupled.
A sound source of frequency 1000 Hz moves at 40.0 m/s toward a listener who is at rest. What is the apparent frequency heard by the listener? (speed of sound = 340 m/s)
a. 853 Hz c. 1130 Hz b. 872 Hz d. 1170 Hz
The downslope movement of an unbroken block of rock or soil, which leaves a curved depression on the slope, is called a(n) ______________
Fill in the blank(s) with correct word
The length of a certain wire is doubled while its radius is kept constant. What is the new resistance of this wire?
A) It stays the same. B) It is 2 times as large. C) It is 3 times as large. D) It is 4 times as large. E) It is 1/2 as large.