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
Advocard [28]
3 years ago
10

How much work is done in lifting a 1.4-kg book off the floor to put it on a desk that is 0.7 m high?

Mathematics
1 answer:
nalin [4]3 years ago
3 0

Answer:

Step-by-step explanation:

Work is said to be done when a force applied to an object cause the body to move in a specified direction.

Work-done = Force * Distance

Since Force = mass * acceleration due to gravity

Work-done =  mass * acceleration due to gravity * distance

Given mass = 1.4kg, distance = 0.7m and g = 9.8m/s²

Workdone in lifting the book off the floor = 1.4*0.7*9.8

Workdone = 9.604Joules

- Similarly, work done in lifting a 21-lb weight book 6 ft off the ground is expressed using the same formula as above;

Given mass = 21-lb, g = 32ft/s² and distance = 6ft

Workdone = 21 * 32 * 6

Workdone = 4,032 lb-ft²/s²

Hence, work-done in lifting a 21-lb weight book 6 ft off the ground is  4,032 lb-ft²/s²

You might be interested in
A right triangle has one side that measures 4 in. The angle opposite that side measures 80°. What is the length of the hypotenus
Sunny_sXe [5.5K]
Since you have an angle and at least one side you can use either sine, cosine or tan. For this question, you would use sine like above. Hope this helps!

5 0
3 years ago
Round 3.468 to tenth
timama [110]

Answer: 3.5


Step-by-step explanation:


5 0
3 years ago
Read 2 more answers
Polygon ABCDEF has 6 sides. A is 170° C is 133° D is 102° he is 117° and F is 90°. What is the measure of b?
Zielflug [23.3K]

Answer:

B = 134^o

Step-by-step explanation:

n = 6 --- sides

A = 170^o

C = 107^o

D = 102^o

E = 117^o

F = 90^o

Required

The measure of B

The interior angles of a polygon is:

Angles = (n - 2) * 180

So, we have:

Angles = (6 - 2) * 180

Angles = 4 * 180

Angles = 720^o

The measure of B is calculated using:

A + B + C + D + E + F = 720

Substitute known values

107 + B + 170 + 102 + 117 + 90 = 720

Collect like terms

B + 107 + 170 + 102 + 117 + 90 = 720

B + 586 = 720

Collect like terms

B = 720 - 586

B = 134^o

4 0
3 years ago
Please i need this answer in two minutes
Travka [436]

Answer: $55,489.20

Step-by-step explanation:

Given the following information :

Base salary = $10.20 per hour

Overtime pay = $10.20 * 1.5 = $15.3

Average sale per hour = $60

Tips = 20% of sale

Regular shift hour = 8hours

Work week:

3 10-hour shift = 24hrs regular (6 hrs overtime)

1 11 - hour shift = 8hrs regular (3 hrs overtime)

1 5 - hour shift = 5 hours

Total hours per week = 37hrs regular, 9hrs overtime

WEEKLY :

Income from tips = $60 * 46 * 0.2 = $552

Regular pay: 37 * 10.20 = $377.40

Overtime: 9 * $15.30 = $137.70

Total = $(137.70 + 377.40 + 552) = $1067.10

Number of weeks in a year = 52

Annual gross = $1067.10 * 52 = $55,489.20

7 0
3 years ago
What is the product for this question. Explain how if you can
Lyrx [107]

Answer:

d

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • This is the one!!!!!!!!!!!
    13·2 answers
  • Solve log812 = x – 2 . Round your answer to four decimal places.
    12·2 answers
  • Please answer this for me x+y=y +x
    15·1 answer
  • What is the value of the digit 5 in the number 6,582.37 times the value of the digit 5 in 1,284.95
    5·1 answer
  • 83 is the sum of three consecutive intengers what are the intengers
    8·1 answer
  • What is the inverse of the function y= x^2-12
    11·1 answer
  • I WILL GIVE BRAINLIEST!! I WILL ALSO GIVE 20+ POINTS!! HELP ASAP, NO LINKS! <3
    11·2 answers
  • Pipe A can fill 3 tanks in 8 minutes. Pipe B can fill 5 tanks in 10 minutes. How long will it take for them to fill a single tan
    5·1 answer
  • A store buys a camera for $80 and decides to markup the price 35%. How much does the camera sell for?
    9·1 answer
  • . Mariam picks 9 2/20 kilograms of oranges. She gives 2 1/4 kilograms to her mother.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!