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
Anna007 [38]
4 years ago
12

A spring whose spring constant is 270 lbf/in has an initial force of 100 lbf acting on it. Determine the work, in Btu, required

to compress it another 1 in.
Physics
1 answer:
cricket20 [7]4 years ago
6 0

Answer:

0.02585 BTU

Explanation:

Given: Spring constant, k = 270 lbf/in

Initial force, f =100 lbf

Compression, x = 1 in

Work done can be calculated as follows:

W = \int {(f+kx)} \, dx \\W = fx + \frac{1}{2}kx^2\\W= (100 lbf)(1 in)+ \frac{1}{2}(270 lbf/in)(1 in)^2\\W= 100+135 = 235 lbf in\\W=235 \times 0.00011 BTU = 0.02585 BTU

You might be interested in
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 13 A, while that
Feliz [49]

Answer:

(a) 1560 W

(b) 576 W

(c) 1.01

Explanation:

Voltage, V = 120 V

Current in dryer, I = 13 A

current in vacuum cleaner, i' = 4.8 A

(a) Power consumed by dryer,

P = V I = 120 x 13 = 1560 W

(b) Power consumed by vacuum cleaner

P' = V I' = 120 x 4.8 = 576 W

(c) Energy consumed by dryer

E = P x t = 1560 x 15 x 60 = 1404000 J

Energy consumed by the vacuum cleaner

E' = P' x t' = 576 x 40 x 60 = 1382400 J

the ratio of energies is

E : E' = 1404000 : 1382400 = 1.01

3 0
3 years ago
Water is an example of a compound. Which of the following is the best description of all compounds?
Burka [1]

Answer:

B) A substance that is made up of more than one kind of atom

Explanation:

3 0
3 years ago
Aprproximately how much electrical energy does a 5-W lightbulb convert to radiant and thermal energy in one hour
madreJ [45]

Answer:

Energy, E = 18 kJ

Explanation:

Given that,

Power of the lightbulb, P = 5 W

We need to find the electrical energy produced by the lightbulb in one hour. We know that electric power is given by the electrical energy produced per unit time.

1 hour = 3600 seconds

Electric power :

P=\dfrac{E}{t}\\\\E=P\times t\\\\E=5\ W\times 3600\ s\\\\E=18000\ J            

or

E = 18 kJ

So, 18 kJ of electrical energy a 5-W lightbulb convert to radiant and thermal energy in one hour.

8 0
3 years ago
| idk what to put this as lol this is related to Christianity |
Margarita [4]

I believe the answer is <u>C</u>

I hope this helps! Have a nice day, make sure to take care of yourself. You're loved <3

5 0
4 years ago
Read 2 more answers
Vector a cross b whole square<br><br>​
skad [1K]

Answer:

Kriss go Brrrrrrrrrrr

Explanation:

4 0
3 years ago
Other questions:
  • A car moved 60km east and 90 km west. What is the distance?
    13·1 answer
  • Define the term volt.
    12·1 answer
  • When women experience severe emotional stress during pregnancy, their babies tend to be
    6·1 answer
  • Which of the following describes the energy transformation that takes place when a boy eats an apple and then lifts weights?
    9·2 answers
  • Speed = distance divided by time <br><br> True<br> False
    9·1 answer
  • 8. What is the resistance of a 1100W hair dryer plugged into a 110V outlet with a 10A current flowing through it?
    15·2 answers
  • Car A is traveling at twice the speed of car B. They both hit the brakes at the same time and decrease their velocities at the s
    11·1 answer
  • When a tennis player practices by
    7·1 answer
  • A marble is dropped into a graduated cylinder that is filled with water. Use the words
    12·1 answer
  • This isn’t homework related but what methods do you guys recommend for shifting realities ? .I’ve tried the raven method for wee
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!