« previous next »

Author Question: A 75-kg swimmer dives horizontally off a 250-kg raft initially at rest. If the diver's speed ... (Read 30 times)

abc

  • Hero Member
  • *****
  • Posts: 543
on: Jul 28, 2018
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
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

abc

  • Hero Member
  • *****
  • Posts: 543
Reply #2 on: Jul 28, 2018
TY


uniquea123

  • Sr. Member
  • ****
  • Posts: 311
Reply #3 on: Jul 28, 2018
You're welcome


« previous next »
 

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

The Speed of Light Is Constant The Speed of Light Is Constant
In the heat of the Battle of Lake Erie, Perry had to abandon his flagship, the Lawrence, which had b In the heat of the Battle of Lake Erie, Perry had to abandon his flagship, the Lawrence, which had b
Noon-Day Rest in Marble Canyon, after an original sketch by Thomas Moran, from J. W. Powell, ... Noon-Day Rest in Marble Canyon, after an original sketch by Thomas Moran, from J. W. Powell, ...
A horizontally opposed engine design helps to lower the vehicle’s center of gravity. A horizontally opposed engine design helps to lower the vehicle’s center of gravity.
An Enzyme in Action Enzymes speed up reactions in your body An Enzyme in Action Enzymes speed up reactions in your body
A racing car accelerates uniformly from rest along a straight track. This track has markers ... A racing car accelerates uniformly from rest along a straight track. This track has markers ...
Video: Heart sounds

For a complete list of videos, visit our video library