In addition to its weight, what force is needed to lift a wire ring of radius 2.0 cm from the surface of blood plasma? The surface tension of blood plasma is 7.3 × 10^¯2 N/m
a. 1.8E+1 N
b. 3.7E–2 N
c. 9.2E–3 N
d. 1.8E–2 N
d
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The phase angle of a series RL circuit with a 100.0-? resistor and a 20.00-mH inductor is 70.00°. What is the inductive reactance of this circuit?
A) 100.0 ? B) 150.0 ? C) 200.0 ? D) 174.7 ? E) 274.7 ?
As measured from the Earth, a spacecraft is moving at speed 0.80c when it releases a probe at speed 0.60c relative to the spacecraft in a forward direction. What would be the speed of the probe as measured from the Earth?
a. 0.70c c. c b. 0.81c d. 0.95c
Monochromatic light (? = 500 nm) is incident on a soap bubble (n = 1.40). What is the wavelength of the light (in nm) in the bubble film?
A. 255 B. 500 C. 700 D. 357 E. 422
When the box hits the floor its kinetic energy is converted into internal energy
Indicate whether the statement is true or false