Between 0°C and 4°C, the volume coefficient of expansion for water:
a. is positive.
c. is becoming less dense.
b. is zero.
d. is negative.
D
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A boxcar without a front or a back is moving toward the right. Two electrons move through the boxcar, one moving from back to front toward the right, the other moving from front to back toward the left. According to me, each electron is moving with a speed of 0.8c, and the boxcar is moving with a speed of 0.6c. A passenger in the boxcar records how long it takes each electron to pass from one end
of the boxcar to the other end. According to the passenger, which took less time? a. the electron going from front to back b. the electron going from back to front c. Since nothing can go faster than light, an electron cannot move toward the left with a speed of 0.8c through a boxcar moving toward the right with a speed of 0.6c. d. They both took the same time.
Discuss the observational phenomena that are associated with the existence of neutron stars
What will be an ideal response?
Two clean, glass plates spaced 0.2 mm apart are placed in 20°C water. How far up the plates will the water climb if the contact angle is 0°?
(A) 75 mm (B) 70 mm (C) 65 mm (D) 60 mm
Felsic definition
What will be an ideal response?