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
In-s [12.5K]
3 years ago
5

which scenario involves the most work? a.pulling a box with a force of 127 newtons across the floor for 8 meters b.holding a mas

s with a force of 509 newtons in your arms for 150 seconds c.pushing against a brick wall with a force of 20 newtons for 42 seconds d.lifting a rock by exerting an upward force of 500 newtons for 1 meter
Physics
1 answer:
abruzzese [7]3 years ago
6 0
<span>Work can only be said to be done when an applied force results in displacement of the body in the direction of the applied force.

Work can only be said to be done in options a and d

a.pulling a box with a force of 127 newtons across the floor for 8 meters

work = 127 * 8 = 1016J

</span>
<span>d.lifting a rock by exerting an upward force of 500 newtons for 1 meter

Work = 500 N * 1 m = 500 J

Option D has more work.

D</span>
You might be interested in
The average kinetic energy of the particles in an object is directly proportional to its A) heat. B) volume. C) temperature. D)
yanalaym [24]

the average kinetic  energy of the particles in an object is directly proportional to its TEMPERATURE.

5 0
3 years ago
Read 2 more answers
Convert 55 miles into inches
frosja888 [35]

Answer:

3.485e+6 inches. hope this helps

6 0
2 years ago
Read 2 more answers
Ndividuals living in highly populated areas are more inclined to _______.
V125BC [204]

Answer:

B. Social Interaction.

Explanation:

6 0
3 years ago
The age of a piece of wood from an archeological site is to be determined using the Carbon-14 method. The activity of the sample
Bond [772]

Answer:

4276.98 years

Explanation:

t = age of the sample in numbers of years

T = half life of the carbon-14 isotope = 5730 yrs

λ = decay constant of carbon-14

decay constant is given as

\lambda =\frac{0.693}{T}

\lambda =\frac{0.693}{5730}

\lambda = 0.000121

A₀ = activity of Carbon-14 in living plants

A  = activity of Carbon-14 after time "t" = (0.596) A₀

Using the equation

A = A_{o} e^{-\lambda t}

(0.596) A₀  = A_{o} e^{-0.000121 t}

0.596 = e^{-0.000121 t}

t = 4276.98 years

4 0
3 years ago
How many boron atoms are there in 5 molecules of BF3? Hint: The symbol for boron is B. Submit​
Thepotemich [5.8K]

Answer:

5 atoms of Boron

Explanation:

Boron makes up approximately 15.944% of the mass and the rest of the 84.056% is Fluorine. There is 5 Atoms because Boron atomic mass is 10.811 in 1 molecule of BF3 and you wanted 5 Molecules.

8 0
2 years ago
Read 2 more answers
Other questions:
  • Please help ! will mark brainliest &lt; 3
    8·1 answer
  • Rate my profile pic up to a 100
    8·1 answer
  • In what type of job might being a difficult person not be much of a liability ?
    8·1 answer
  • Two resistances, R1 and R2, are connected in series across a 9-V battery. The current increases by 0.450 A when R2 is removed, l
    14·1 answer
  • What is produced when constantly changing electric and magnetic fields cause electrically charged particles to vibrate or accele
    14·1 answer
  • Please help ASAP! Thank you :)
    12·1 answer
  • which two developments are most likely to occur if nonrenewable resources such as fossil fuels are no longer extracted from eart
    11·1 answer
  • Write a reaction equation to show HCO3 acting as an acid​
    13·1 answer
  • Potential difference is measured in which units?<br> volts<br> amps<br> currents<br> watts
    8·2 answers
  • Why are the layers of the earth in the order that they are in?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!