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

Author Question: A car needs to generate in order to maintain a constant velocity of on a flat road. What is the ... (Read 85 times)

strangeaffliction

  • Hero Member
  • *****
  • Posts: 660
on: Jul 29, 2018
A car needs to generate in order to maintain a constant velocity of on a flat road. What is the magnitude of the total resistive force acting on the car (due to friction, air resistance, etc.)? (1 hp = 746 W)
 
  A) 2.05  103 N
  B) 2.75 N
  C) 1.03  103 N
  D) 2.87  103 N

Question 2

How long will it take a 7.08 hp motor to lift a 250 kg beam directly upward at constant velocity from the ground to a height of 45.0 m? Assume frictional forces are negligible. (1 hp = 746 W)
 
  A) 20.9 s
  B) 1.56  104 s
  C) 2.18  104 s
  D) 39.7 s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

morrie123456

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: A


strangeaffliction

  • Member
  • Posts: 660
Reply 2 on: Jul 29, 2018
Gracias!

mochi09

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

The insect family Coenagrionidae is found in the order Odonata and the suborder Zygoptera. The insect family Coenagrionidae is found in the order Odonata and the suborder Zygoptera.
The “Flat Head” (Chinook) Indians acquired their name through shaping in infancy, as shown in a diag The “Flat Head” (Chinook) Indians acquired their name through shaping in infancy, as shown in a diag
This girl ran four spinning machines in a cotton mill in Whitnel, North Carolina. Only 4 feet, 3 inc This girl ran four spinning machines in a cotton mill in Whitnel, North Carolina. Only 4 feet, 3 inc
Blood Collection Tubes: Order of Draw Blood Collection Tubes: Order of Draw
An example of the shipping paper used in over-the-road transportation. An example of the shipping paper used in over-the-road transportation.
Rate order question Rate order question
Video: Simple Diffusion - gases and nonpolar compounds transport

For a complete list of videos, visit our video library