Suppose that the dipole moment associated with an iron atom of an iron bar is 2.9 × 10-23 j/t. assume that all the atoms in the bar, which is 6.5 cm long and has a cross-sectional area of 1.0 cm2, have their dipole moments aligned. (a) what is the dipole moment of the bar? (b) what torque must be exerted to hold this magnet perpendicular to an external field of 1.7 t? (the density of iron is 7.9 g/cm3 and its molar mass is 55.9 g/mol.)

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid