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

Author Question: A 220-kg object is lifted at a constant speed through a height of 42 m by a crane. If the crane ... (Read 78 times)

sheilaspns

  • Hero Member
  • *****
  • Posts: 567
on: Jul 29, 2018
A 220-kg object is lifted at a constant speed through a height of 42 m by a crane. If the crane takes a total time of 1.8 seconds to lift this object, what is the average power required? Use g = 10 m/s2.
 
  A) 25 kW
  B) 51 kW
  C) 75 kW
  D) 100 kW
  E) 150 kW

Question 2

Mrs. Jones went on a diet and lost 15 kilograms. How many pounds did she lose?
 
  A) 68 pounds
  B) 42 pounds
  C) 38 pounds
  D) 33 pounds
  E) 6.8 pounds


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Leostella20

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

D


sheilaspns

  • Member
  • Posts: 567
Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

dreamfighter72

  • Member
  • Posts: 355
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Evidence that Light Travels at a Finite Speed Evidence that Light Travels at a Finite Speed
This pediatric growth chart tracks the height and weight for girls ages 2–20. This pediatric growth chart tracks the height and weight for girls ages 2–20.
Average Hourly Earnings of U.S. Workers in Current and Constant Dollars Average Hourly Earnings of U.S. Workers in Current and Constant Dollars
At 34.5°C, oxygen gas expands from 34.5 L to 45.7 L against a constant pressure of 750 mmHg. ... At 34.5°C, oxygen gas expands from 34.5 L to 45.7 L against a constant pressure of 750 mmHg. ...
Americium-243 has a decay constant of 9.39 × 10-5 years-1. How long will it take Americium-243 has a decay constant of 9.39 × 10-5 years-1. How long will it take
Adult height Adult height
Video: Subunits of DNA And Semi Conservative Replication

For a complete list of videos, visit our video library