A 5-gallon container of water (approximately 20 kg) having a temperature of 212°F is added to a 50-gallon tub (approximately 200 kg) of water having a temperature of 50°F. What is the final equilibrium temperature (in °C) of the mixture?
a. 54
b. 36
c. 18
d. 66
e. 14
C
Physics & Space Science
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If ? 1 = 4.0 V, ? 2 = 12.0 V, R1 = 4 ?, R2 = 12 ?, C = 3 ?F, Q = 18 ?C, and I = 2.5 A, what is the potential difference Va ? Vb?
a.
?30 V
b.
30 V
c.
5.0 V
d.
?5.0 V
e.
?1.0 V
Physics & Space Science
All pulsars are neutron stars; why is the reverse not true?
What will be an ideal response?
Physics & Space Science
In ultrasound the wavelength of the sound is much smaller than in normal sound
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
At a given location the direction of the magnetic field is the direction that the north pole of a compass points when placed at that location
Indicate whether the statement is true or false
Physics & Space Science