An object that is negatively charged will

a. attract a rubber rod stroked with fur.
b. attract a glass rod stroked with silk.
c. be polarized.
d. none of these


b

Physics & Space Science

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How do typical wind speeds in Jupiter's atmosphere compare to typical wind speeds on Earth?

A) They are much faster than hurricane winds on Earth. B) They are about the same as average winds on Earth. C) They are slightly faster than average winds on Earth. D) They are slightly slower than average winds on Earth.

Physics & Space Science

When a planet moves closer to the Sun in an elliptical orbit, its rotational inertia about the sun

A. gets smaller because its distance from the Sun is smaller. B. gets larger because the angular momentum must be conserved. C. gets smaller because the lever arm is shorter. D. gets larger because the planet has more angular acceleration. E. does not change because the mass of the planet is constant.

Physics & Space Science

The magnitude of the electric field at a point P for a certain electromagnetic wave is 570 N/C. What is the magnitude of the magnetic field for that wave at P? (c = 3.0 x 108 m/s)

A) 2.91 µT B) 1.90 µT C) 1.10 µT D) 1.41 µT E) 2.41 µT

Physics & Space Science

The terminals of a battery are connected across two resistors in series. The resistances of the resistors are not the same. Which of the following statements are correct? Choose all that are correct

1.The resistor with the smaller resistance carries more current than the other resistor. 2.The resistor with the larger resistance carries less current than the other resistor. 3.The current in each resistor is the same. 4.The potential difference across each resistor is the same. 5.The potential difference is greatest across the resistor closest to the positive terminal.

Physics & Space Science