This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an ... (Read 51 times)

mpobi80

  • Hero Member
  • *****
  • Posts: 519
on: Jul 29, 2018
A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745 rad/s2.
 
  The child is standing 4.65 m from the center of the merry-go-round. (a) What is the magnitude of the acceleration of the child?
  (b) What angle does the acceleration of the child make with the tangential direction?

Question 2

A laser with a power of 1.0 mW has a beam radius of 1.0 mm. What is the peak value of the electric field in that beam?
 
  A)
 
  490 V/m
  B)
 
  840 V/m
  C)
 
  65 V/m
  D)
 
  120 V/m
  E)
 
  22 V/m


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

parshano

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 8.05 m/s2
(b) 64.5

Answer to Question 2

A


mpobi80

  • Member
  • Posts: 519
Reply 2 on: Jul 29, 2018
Gracias!

olderstudent

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

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.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Because the leg muscles of children with muscular dystrophy are weak, they must perform the Gowers’ Because the leg muscles of children with muscular dystrophy are weak, they must perform the Gowers’
the comet Encke riding along its pebbly trail of debris (long diagonal line) between the orbits of M the comet Encke riding along its pebbly trail of debris (long diagonal line) between the orbits of M
Initiation of a new round of replication before completion of the preceding round Initiation of a new round of replication before completion of the preceding round
A spaceship leaves Earth at a steady forward speed of 70% the speed of light. How fast relative ... A spaceship leaves Earth at a steady forward speed of 70% the speed of light. How fast relative ...
Maimed Child due to Thalidomide Maimed Child due to Thalidomide
You ride a motor scooter 8 km in 10 minutes. Your speed is You ride a motor scooter 8 km in 10 minutes. Your speed is
Video: Hormonal feedback loop components & Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library