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
Vika [28.1K]
3 years ago
8

Find the work done by a force fâ =1.8i^+2.2j^n as it acts on an object moving from the origin to the point râ =56i^+31j^m.

Mathematics
1 answer:
Mama L [17]3 years ago
8 0
Take the dot product:

W=\mathbf F\cdot\mathbf r=(1.8\,\mathbf i+2.2\,\mathbf j)\cdot(56\,\mathbf i+31\,\mathbf j)
W=169\,\text{Nm}
You might be interested in
Round 6,311 to the nearest thousand ​
algol13

Answer:

6,000

Step-by-step explanation:

3 0
3 years ago
Gena attached a dog ramp to her sofa, which allows her oldest dog to easily climb onto a seat cushion. The ramp is 55 inches lon
N76 [4]
If we were to view the ramp from its side, the profile would resemble a right triangle with a 90 degree angle where the sofa meets the floor.

In this case, the two legs of the right triangle are 55 inches and 28 inches, and we looking for the length of the hypotenuse.

We can use Pythagorean Theorem which states:

a^2 + b^2 = c^2

 where a and b are the legs, and c is the hypotenuse.

55^2 + 28^2 = c^2

3025 + 784 = c^2

c^2 = 3809

c =  \sqrt{3809}

c = 61.717 inches

To the nearest tenth, the answer is 61.7 inches.
3 0
3 years ago
Darren teaches a class of 25 students. He assigns homework 3 times a week, and each assignment consists of 12 problems. How many
riadik2000 [5.3K]
I'm guessing its 900 because 3 × 12 = 36
36 × 25 = 900
6 0
4 years ago
Read 2 more answers
Will Mark!! The length of a rectangle is represented by 7x- y, and the width is represented by 3x + 4y. Write polynomial that re
nikdorinn [45]

Answer:

2(7x-y) + 2(3x+4y)

7 0
3 years ago
A recipe for 8 people includes 4 pounds of sugar. How many pounds of sugar would be necessary for 6 people?
sammy [17]

Answer:

3pound sugar .,......................

3 0
3 years ago
Other questions:
  • Determine 18th shape in the pattern
    9·2 answers
  • The height of the closet is 96 inches, and aisha would like to have 4 rows of cube organizers. what is the most the height of ea
    13·2 answers
  • (2x9y^n)(4x2y10)=8x11y20
    14·1 answer
  • Can you please explain to me which functions are odd?
    6·1 answer
  • Villas garden is only 10 yd.? and the watermelon plants she wants to grow require 2.5 yd.? each how many watermelon plants can s
    6·1 answer
  • A wall map is 45 cm high and 27 cm wide. Ashley wants to proportionately shrink it so its height is 12 cm. How wide would it be
    11·1 answer
  • NEED HELP ASAP WILL GIVE BRAINLIEST
    14·1 answer
  • Find 7.4 times the difference between 87 and 24​
    14·2 answers
  • 3xc = -5, solve for x
    14·1 answer
  • What are the roots of the quadratic equation y=x^2 -10x +125?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!