A 2.0-kg mass in the xy plane is moving in the negative x direction at 3.0 m/s along the line y = 5.0 m. As the mass passes across the y axis (i.e., passing the point (x, y = 0, 5.0 m)), what is its angular momentum with respect to the z axis?
a. 30 SI units
c. -30 SI units
b. 150 SI units
d. -150 SI units
A
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RLC Circuits: A 120-V rms voltage at 60 Hz is applied across a series combination of a 20-?F capacitor and an unknown resistor. If the rms value of the current in the circuit is 0.60 A, what is the resistance of the resistor?
A. 60 ? B. 120 ? C. 180 ? D. 150 ? E. 200 ?
The search for Earth-like extraterrestrial life is essentially a search for
A) energy B) liquid water C) oxygen D) carbon
State Gay-Lassac's law
What will be an ideal response?
A container of water is placed on a scale, and the scale reads 120. g. Now a 20.0g piece of copper (specific gravity = 8.90 ) is suspended from a thread and lowered into the water, not touching the bottom of the container
What will the scale now read? A) 140 g B) 120 g C) 138 g D) 122 g E) 112 g