A mass (10 kg) slides down to the left on an
inclined 30° surface
with coefficient of friction
Ulkinetic=0.2. It is connected
over a pulley to a hanging
5 kg mass by a massless
stretch-free cord. What is
the acceleration up the plane
of the mass on the plane? (Work needed)

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

Examples of states of consciousness include a. daydreaming b. dreaming during sleep c. hypnosis d. all of the above