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
Lilit [14]
3 years ago
7

You expend 500 w of power in moving a piano 5 meters in 10 seconds. how much force did you exert?

Physics
2 answers:
shutvik [7]3 years ago
8 0
Power = Work/time
Work = Force*Displacement 

Power = (Force*Displacement )/time

500 W= F*5m/10s
F = 500W*10s/5m =1000 J/s*s/m = 1000 J/m= 1000 N
zzz [600]3 years ago
5 0

Answer:

1,000 N APEX Verified

Explanation:

You might be interested in
A straight line is drawn on the surface of a 14-cm-radius turntable from the center to the perimeter. A bug crawls along this li
sleet_krkn [62]

Answer:

v = \left[\begin{array}{c}0.66&0\end{array}\right]m/s

Explanation:

The position vector r of the bug with linear velocity v and angular velocity ω in the laboratory frame is given by:

\overrightarrow{r}=vtcos(\omega t)\hat{x}+vtsin(\omega t)\hat{y}

The velocity vector v is the first derivative of the position vector r with respect to time:

\overrightarrow{v}=[vcos(\omega t)-\omega vtsin(\omega t)]\hat{x}+[vsin(\omega t)+\omega vtcos(\omega t)]\hat{y}

The given values are:

t=\frac{x}{v}=\frac{14}{3.8}=3.7 s

\omega=\frac{45\times2\pi}{60s}=4.7\frac{1}{s}

8 0
3 years ago
why is a train more difficult to stop then a rolling ball even if they are traveling at the same speed? URGENT
zloy xaker [14]
Think of the formula force=mass x acceleration. even though they have the same acceleration, a train has more mass. is that helpful?
5 0
3 years ago
5. Emanuel Zacchini, the famous human cannonball of the Ringling Bros. and Barnum and Bailey Circus,
Strike441 [17]

Explanation:

सिद्ध कीजिए किसी भी बराबर भुजाओं वाले त्रिभुज में उनके सामने के कोण बराबर होते है

3 0
2 years ago
Which statement correctly describes these electric field lines
JulijaS [17]

Answer:

ok

Explanation:

the correct answer is C please follow me

8 0
3 years ago
Read 2 more answers
In classical physics, consider a 2 kg block hanging on a spring with a spring constant of 50 N/m. Ignore air resistance. The blo
RUDIKE [14]

Answer:

v = 0

Explanation:

This problem can be solved by taking into account:

- The equation for the calculation of the period in a spring-masss system

T = \sqrt{\frac{m}{k} }     ( 1 )

- The equation for the velocity of a simple harmonic motion

x = \frac{2\pi }{T}Asin(\frac{2\pi }{T}t)   ( 2 )

where m is the mass of the block, k is the spring constant, A is the amplitude (in this case A = 14 cm) and v is the velocity of the block

Hence

T = \sqrt{\frac{2 kg}{50 N/m}} = 0.2 s

and by reeplacing it in ( 2 ):

v = \frac{2\pi }{0.2s}(14cm)sin(\frac{2\pi }{0.2s}(0.9s)) = 140\pi  sin(9\pi ) = 0

In this case for 0.9 s the velocity is zero, that is, the block is in a position with the max displacement from the equilibrium.

5 0
3 years ago
Other questions:
  • What provides the force on the person on the passenger seat?
    13·1 answer
  • Approximately how far is the sun from the center of the milky way galaxy?
    12·2 answers
  • Drivers a and b travel west from boston. driver a leaves three hours earlier traveling at a constant speed of 68mph. driver b fo
    15·1 answer
  • which step of the scientific method relies more heavily on newly collected data than on creativity and innovation?
    15·1 answer
  • Why degree F is best to measure accurate temperature<br>​
    10·1 answer
  • What causes a bolt of lightning
    7·2 answers
  • 1
    10·1 answer
  • In what do electromagnetic waves cause disturbances when they transfer<br> energy?
    12·2 answers
  • Which statements are true?​
    9·1 answer
  • A sports car starts from rest it covers a distance of 900 m to attain a speed of 80m s determine the acceleration of the car and
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!