Author Question: A 75-kg swimmer dives horizontally off a 250-kg raft initially at rest. If the diver's speed ... (Read 59 times)

abc

  • Hero Member
  • *****
  • Posts: 543
A 75-kg swimmer dives horizontally off a 250-kg raft initially at rest. If the diver's speed immediately after leaving the raft is 2 m/s, what is the corresponding raft speed?
 a. 0.2 m/s
  c. 0.6 m/s
  b. 0.3 m/s
  d. 4.0 m/s

Question 2

Two small objects are suspended from threads. When the objects are moved close together, they attract one another. Which of the following could produce this result?
 a. One object is negatively charged and the other is uncharged. b. One object is positively charged and the other is uncharged. c. One object is positively charged and the other is negatively charge.
  d. All of the above could result in such attraction.



uniquea123

  • Sr. Member
  • ****
  • Posts: 311
Answer to Question 1

C

Answer to Question 2

D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

For a complete list of videos, visit our video library