Which statement best describes one way that spiral and elliptical galaxies typically differ? *

O Spiral galaxies are large, but elliptical galaxies are smaller.

Elliptical galaxies contain stars, but spiral galaxies contain dust and gas.

O Spiral galaxies contain young stars, but elliptical galaxies contain mainly old stars.

Elliptical galaxies are held together by gravity, but spiral galaxies are held together by
centrifugal forces.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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