An ambulance siren sounds different as it approaches you than when it moves away from you. what scientific term would you use to explain how this happens? a. ultrasound b. diffraction c. rarefaction d. the doppler effect the part of the ear that sends coded nerve signals to the brain is a. the outer ear. b. the inner ear. c. the middle ear. d. the eardrum *** to what is amplitude related? a. the amount of energy carried by the wave b. the maximum displacement from the rest position c. neither of the above d. both the first and the second choices above.

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

What is the temperature in degrees celsius of a substance with a tempature of 49k

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].