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
UNO [17]
2 years ago
8

In which situation is no work being done?

Physics
1 answer:
soldi70 [24.7K]2 years ago
4 0

Answer:

Explanation:

A: as long as the height does not change, there is no work being done going from 1 place to the next.

B: Here's where the work is being done for A. You lift the box from ground level to the height where it settles.

C: If there is friction involved (and it sounds like there is) then there is work being done against the friction.

D: same explanation as C.

You might be interested in
Calculate the equivalent of 20 degrees Celsius in degrees Fahrenheit and Kelvin.
alekssr [168]

Answer:

68 °F, 293.15 K

Explanation:

Fahrenheit, Kelvin and Celsius are the different scales of temperature in which temperature is measured.

Given : T = 20°C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

<u>T = (20 + 273.15) K = 293.15 K </u>

The conversion of T( °C) to T(F) is shown below:

T (°F) = (T (°C) × 9/5) + 32

So,

<u>T (°F) = (20 × 9/5) + 32 = 68 °F</u>

3 0
3 years ago
an op amp in unity gain configuration (buffer) with slew rate of 5v/us is used to amplify a sinusoidal signal with a frequency o
ZanzabumX [31]

Answer:

The maximum amplitude (V_{max}) will be 7.96 V.

Explanation:

We know, for distortion free operation, the slew rate (S) of an OPAMP is written as

S = 2 \pi f V_{max}

where 'f' is the highest frequency signal.

Therefore, from the above equation we can write,

&&5 \frac{V}{\mu s} = 2 \pi 100 kHz \times V_{max}\\&or,& V_{max} = \frac{5V}{10^{-6} s \times 2 \pi 100 \times 10^{3} Hz}\\&or,& V_{max} = \frac{5}{2 \pi \times 10^{-1}} V = 7.96 V

3 0
3 years ago
Starting from rest, a car undergoes a constant acceleration of 6 m/s^2. How far will the car travel in the two seconds?
oksano4ka [1.4K]

If time is specified, the distance may be estimated in constant acceleration using the formula: X=(at2)/2 if the beginning velocity is 0. (A automobile begins from a stop...) As a result, X=(6*10*10)/2=600/2 = 300 m.

4 0
2 years ago
Using the equation zeff=z−s and assuming that core electrons contribute 1.00 and valence electrons contribute 0.00 to the screen
DIA [1.3K]
Thank you for posting your question here at brainly. Below is the solution. I hope the answer will help. 

<span>Cl^- 1s^2 2s^2p^6 3s^2 3p^6 1s^2 2s^2p^6 S = 10; 3s^2 3p^6 S = 0 </span>
<span>Zeff = Z-S = 17- 10 =7 </span>
<span>K^+ 1s^2 2s^2p^6 3s^2 3p^6; 1s^2 2s^2p^6 S = 10; 3s^2 3p^6 S = 0 </span>
<span>Zeff = Z-S = 19- 10 = 9 
</span>
S = 2 + 6.8 + 2.45 = 11.25 
<span>Zeff(Cl^-) = 17 – 11.25 = 5.75 </span>
<span>K^+ 1s^2 2s^2p^6 3s^2 3p^6 same S as for Cl^- but Z increases by 2 hence </span>
<span>Zeff(K^+) = 19 - 11.25 = 7.75</span>
5 0
3 years ago
Read 2 more answers
Think about Newton's 2nd Law, Force equals mass times acceleration. Liz puts a 1 kg weight and a 10 kg weight on identical wagon
Alexeev081 [22]
More force is needed for more mass. Therefore, if the mass is greater and the force is not enough then the object will less likely accelerate
5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the definition of Rock Strata and Law of Original Horizontality?
    11·1 answer
  • Particle A and particle B are held together with a compressed spring between them. When they are released, the spring pushes the
    14·1 answer
  • Are graded receptor potentials always depolarizing? Do graded receptor potentials always make it easier to induce action potenti
    7·1 answer
  • Do the same molecules have to be present on both sides of a chemical equation?<br> why or why not?
    5·1 answer
  • A ball flies through the air. Right before it hit the ground, it’s peed is 10 meters/second and it has 500 joules of kinetic ene
    10·1 answer
  • Hurricane sandy produced some of the greatest destruction along the new jersey coast in communities situated along narrow strips
    5·1 answer
  • What are the three main types of stress in rock
    7·1 answer
  • Table is in the picture. and will mark brainstest
    7·2 answers
  • What atoms should be in the products of the chemical reaction?
    12·2 answers
  • which view of the macroeconomy suggests that the speed of adjustment Purcell correction would be very quick
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!