Crocodiles are thought to be able to detect changes in the flux due to Earth's magnetic field as they move their heads. Suppose a crocodile is initially facing north. The horizontal component of Earth's magnetic field is 30 μT. Consider a vertical, circular loop of neurons inside the crocodile's head with radius 19 cm. The loop is initially perpendicular to the horizontal component of Earth's magnetic field. The crocodile rotates its head 90° until it is facing east in a time interval of 2.3 s. What is the average emf induced around this loop of neurons? Round your answer to two decimal places.

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.