A man is holding an 8.00-kg vacuum cleaner at arm's length, a distance of 0.550 m from his shoulder. What is the torque on the shoulder joint if the arm is held at 30.0° below the horizontal?
A) 21.6 Nm
B) 2.20 Nm
C) 4.40 Nm
D) 12.6 Nm
E) 37.4 Nm
E
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You observe a spiral galaxy with a large central bulge and tightly wrapped arms. It would be classified a(n)
A) S0. B) E7. C) Sa. D) Sc. E) Sb.
Lenz's Law: A bar magnet is close to a solenoid, as shown in the figure. As viewed through the solenoid looking toward the magnet, what is the direction (clockwise or counterclockwise) of the current (if any) induced in the solenoid in each case?(a) The magnet is pushed toward the solenoid.(b) The magnet and solenoid both move to the right at 25 cm/s.
What will be an ideal response?
The Schrödinger equation is most useful for describing
A) submicroscopic particles. B) microscopic particles. C) macroscopic particles. D) none of the above
Green light has a wavelength of 5.4 × 10^?7 m. What is the frequency of this EM-wave in air?
a. 5.55 × 10^14 Hz b. 6.00 × 10^11 Hz c. 9.00 × 10^8 Hz d. 3.00 × 10^10 MHz e. 1.80 × 10^15 Hz