The 15 g head of a bobble-head doll oscillates in SHM at a frequency of 4.0 Hz.

a. What is the spring constant of the spring on which the head is mounted?

b. suppose the head is pushed 2.0 cm against the spring, then released. What is the head's maximum speed as it oscillates?

c. the amplitude of the head's oscillations decreases to 0.5cm in 4.0s. What is the head's damping constant?

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.

What is a view of science and psychology that says the value of knowledge depends on its usefulness? a. pragmatism b. psychotherapy c. physiology

We will use a video to study faraday’s law of electromagnetic induction by analyzing the induction that occurs due a coil of copper wire sliding along an air track that passes through an external magnetic field. specifically, we will: examine some of the main principles behind faraday’s law. apply lenz’s law to determine the direction of the induced emf. take measurements of the induced emf from the voltmeter as the coil passes into and out of the external magnetic field. use the horizontal scale provided to determine the speed of the coil. calculate the magnetic field induced in the coil as it passes into and out of the external magnetic field.