A 3.0 ? resistor is connected in parallel with a 6.0 ? resistor. This combination is connected in series with a 4.0 ? resistor. The resistors are connected to a 12. volt battery. How much power is dissipated in the 3.0 ? resistor?
A) 12 W
B) 5.3 W
C) 7.7 W
D) 6 W
E) 2.7 W
D
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The "Milky Way" in the night sky looks like a blurry circle of light in the sky because
A) we are seeing the stars and gas that lie in disk of our Milky Way Galaxy. B) our Sun is located at the center of our galaxy. C) the stars within this band of light are much farther away than other stars. D) our rotating Earth blurs our view of stars in the Milky Way Galaxy.
Which has the larger entropy: a gas that occupies only half of a container, with the other half a vacuum, or the same gas occupying the entire container?
What will be an ideal response?
As the ball is going downwards
a. the velocity and acceleration both point up b. the velocity points up and the acceleration down c. the velocity points down and the acceleration up d. the velocity and acceleration both point down e. the acceleration is zero
The objective lens of a microscope has a focal length of 2.4 mm and the eyepiece has an angular magnification of 15. The object is positioned 0.060 mm beyond the focal point of the objective
The focal point of the eyepiece is positioned at the real image formed by the objective. The near point of the microscope user is at 25 cm. The magnitude of the overall magnification of the microscope is closest to A) 400. B) 450. C) 500. D) 550. E) 600.