Earth doesn't experience a solar eclipse every month because
a. of unpredictable weather patterns.
b. the moon always keeps its same side toward the Earth.
c. the moon's position is not aligned with the Earth's orbit.
d. its sometimes nighttime when the eclipse occurs.
e. sometimes the moon is too far away.
C
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The bulk modulus of aluminum is
If the density of aluminum is
then what is the speed of sound in aluminum?
A. 4,500 m/s B. 4,700 m/s C. 4,900 m/s D. 5,100 m/s E. 5,500 m/s
The entropy of the surroundings remains constant during an adiabatic change even if the change is irreversible
Indicate whether the statement is true or false
A 230000 V-rms powerline carries an average power Pavg = 250 MW a distance of 200 km. If the total resistance of the cables is 10 ohms, what is the resistive power loss?
a. 1.0 MW b. 2.5 MW c. 5.4 MW d. 12 MW e. 10 kW
Electron A is fired horizontally with speed 1.00 Mm/s into a region where a vertical magnetic field exists. Electron B is fired along the same path with speed 2.00 Mm/s. Which electron has a path that curves more sharply?
1.A does. 2.B does. 3.The particles follow the same curved path. 4.The particles continue to go straight.