Physics, 03.12.2019 19:31 carsengilbert

Atrain station bell gives off a fundamental tone of 500 hz as the train approaches the station at a speed of 20 m/s. if the speed of sound in air is 335 m/s, what will be the apparent frequency of the bell to an observer riding the train?
a. 532 hz
b. 530 hz
c. 470 hz
d. 472 hz

Answers: 2

Show answers

Another question on Physics

Physics, 21.06.2019 14:30

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

Answers: 1

Answer

Physics, 22.06.2019 05:30

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

Answers: 1

Answer

Physics, 22.06.2019 11:00

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

Answers: 1

Answer

Physics, 23.06.2019 02:40

The two metal spheres in the figure are connected by a metal wire with w switch in the middle. initially the switch is open. sphere 1, with the larger radius, i'd given a positive charge. sphere 2, with the smaller radius, is neutral. then the switch is closed. afterward, sphere 1 has charge q1, is at potential v1 and the electric field strength at its surface is e1. the values for sphere 2 are q2, v2, and e2. a. is v1 < ,> , or = to v2? explain. b. is q2 < , > , or = explain? c. is e1 < ,> ,or = to e2? explain?

Answers: 1

Answer

You know the right answer?

Atrain station bell gives off a fundamental tone of 500 hz as the train approaches the station at a...

Questions

Physics, 12.07.2019 11:00

Hi. indicate which of the following physics symbols denote units and which denote variables or quantities. a. c b. c (cursive) c. c (cursive) d. t (cu...