« previous next »

Author Question: A radio station broadcasts at 80 MHz. How long does it take for this radio signal to travel a ... (Read 53 times)

chads108

  • Hero Member
  • *****
  • Posts: 507
on: Jul 29, 2018
A radio station broadcasts at 80 MHz. How long does it take for this radio signal to travel a distance of 20  106 m?
 
  A) 0.15  10-2 s
  B) 15 ms
  C) 6.7  10-2 s
  D) 20 ms
  E) 25 ms

Question 2

A car is moving in a circular path. At a certain instant, it has zero tangential acceleration and a non-zero centripetal acceleration. What is the car doing at that instant?
 
  What will be an ideal response?


flexer1n1

  • Sr. Member
  • ****
  • Posts: 373
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

It is moving with a non-zero velocity and zero instantaneous angular acceleration.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Testing the effects of long-term fertilizing on inter-actions between mycorrhizal fungi and plants o Testing the effects of long-term fertilizing on inter-actions between mycorrhizal fungi and plants o
Radio Telescope Radio Telescope
Having a time zone map located near the telephone will assist you when making long distance calls ou Having a time zone map located near the telephone will assist you when making long distance calls ou
A typical waveform of a TP sensor signal as recorded on a DSO when the accelerator pedal was ... A typical waveform of a TP sensor signal as recorded on a DSO when the accelerator pedal was ...
A typical heated zirconia oxygen sensor, showing the sensor signal circuit that uses the outer ... A typical heated zirconia oxygen sensor, showing the sensor signal circuit that uses the outer ...
Video: Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library