1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
musickatia [10]
3 years ago
10

A 2-kg wood block is pulled by a string across a rough horizontal floor. The string exerts a tension force of 30 n on the block

at an angle of 20º above the horizontal. The block moves at constant speed. If the block is pulled for a distance of 3. 0 m, how much work is done by the tension force?.
SAT
1 answer:
Anton [14]3 years ago
5 0

Only the horizontal component (the component parallel to the floor) of tension does work on the block. This parallel component has magnitude

(30 N) cos(20°) ≈ 28.2 N

and acts over a distance of 3.0 m, so it performs

(28.2 N) (3.0 m) ≈ 85 J

of work

You might be interested in
Babies with very low or very high birth weight are less likely to survive.
cricket20 [7]

Answer:

Explanation:

is it a true or false question?

5 0
2 years ago
The advantages of being an enterprenuer are​
maksim [4K]

Answer: The most obvious advantage is the opportunity to be your own boss. Being in charge and making the important decisions regarding your business can be fulfilling, but it can also be challenging. Control. You choose the work you like to do and that makes the most of your strengths and skills.

Hope this helps :)

5 0
3 years ago
The design of a new computer processor requires that electric current be carefully controlled. Why might an engineer want to use
Leya [2.2K]
Because metalloids are semiconductors. The fact that metalloids are brittle/shiny are only physical characteristics and wouldn’t be the reason why a metalloid would be helpful for designing a new computer processor. Amphoteric means that it’s able to react both as a base and as an acid, but since the computer processor has to have something to do with electricity, the second option would be the answer. Semiconductors are also helpful for electrical circuits, so that’s also why is would be best for the new computer processor.
3 0
3 years ago
Read 2 more answers
Explain the importance of glucose in plants.
vitfil [10]
Glucose, which is a monosaccharide, is a carbohydrate produced through the photosynthesis process in plant leaves that contain the chloroplasts. The glucosethat plants do not use immediately is converted into larger molecules of glucoseand stored as starch for later use as an energy source. This is the main function of glucose in plants .
7 0
3 years ago
Ben walked into a hardware store and asked the price of some items. The salesman said: One costs $1 Eight costs $1 Seventeen cos
Mars2501 [29]
Ben was buying home address numbers and they cost $1 per digit.
8 0
3 years ago
Other questions:
  • Cardiac muscle contains a great many mitochondria which produce what for energy
    9·1 answer
  • How much time do students have to complete the writing and language section of the PSAT
    12·2 answers
  • Vijay needs to take a taxi, which costs a flat fee of 333 dollars, plus an additional 444 dollars per mile. If Vijay has aaa dol
    12·1 answer
  • Can flexible objects transfer electrical energy
    14·1 answer
  • Which is NOT true of sound waves?
    13·2 answers
  • You want to apply for a promotion. According to the document, what should you do first?
    5·1 answer
  • Study the image. The moon shown as a crescent on the right. Which phase of the moon is shown? full moon first quarter waning gib
    13·1 answer
  • How much of the Earth’s surface do deserts cover and where do they occur? What are the four major types of desert? (Site 1).
    14·2 answers
  • For example, if a wave has a frequency of 120 Hz and a wavelength of 5m, it would have a speed of 600 m/s.
    6·1 answer
  • The company wants to use the package that has the least amount of wasted space. The company should choose the prism because it h
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!