Please give an actual answer, and not just steal the points Consider the following circuit of three resistors (R1, R2, and R3), with batteries that have emfs ℰ1 = 11 V and ℰ2 = 43 V, and internal resistances r1 and r2.

Randomized Variables
ℰ1 = 11 V
ℰ2 = 43 V
a) Find the current I1, in amps.
b) Find the current I2, in amps.
Find the current I3, in amps.

Density of salty water as compared to the density of pure water is(a) is less(b) is always equal(c) is always more(d) may be less or more

When someone slams her books on a table the kinect energy is transferred into vibrations that travel to your ears as sound waves which statement describes the movement of those waves

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.