Two blocks hang from strings would around different parts of a 2 kg double pulley as shown. The pivot exerts a normal force FN supporting the double pulley. Assuming the system is not in equilibrium, which statement about FN is true after the system is released from rest? (Use g = 10 N/kg.)
2
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Nearly 100% by mass of Earth's core is composed of the two elements
a. iron and nickel b. aluminum and silicon c. oxygen and aluminum d. silicon and oxygen.
A circuit contains two inductors of 6.0-mH inductance in series placed in parallel with an inductor of 8.0-mH inductance. After one of the 6.0-mH inductors burns out, the repair person wants to replace all three inductors with one inductor of equivalent inductance. Assuming inductors combine in series and parallel the same way resistors do, what inductance should she use?
A. 3.0 mH B. 3.4 mH C. 4.8 mH D. 11 mH E. 20 mH
When we say that Jupiter is at opposition, we mean that it
A) appears on the opposite side of the sky from the Sun, so that it is on our meridian at midnight. B) is behind the Sun as seen from Earth, so that it appears close to the Sun in our sky. C) is at its greatest western elongation. D) is at the point in its orbit where it is farthest from the Sun.
At what frequency does a 10. ?F capacitor have a reactance of 0.12 k??
What will be an ideal response?