Which changes will cause an increase in the magnetic field of a solenoid? check all letters that apply. a) using more wire loops b) using fewer wire loops c) using a larger current d) using a smaller current e) increasing the spacing between loops f) decreasing the spacing between loops

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?