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
denis-greek [22]
2 years ago
9

A object of mass 33 is dropped from a height of 85 meters. Calculate the average power developed by the object in falling throug

h this distance.
Take g as 9.81 m/s^2

give the answer in watts to three significant figures
Physics
1 answer:
DochEvi [55]2 years ago
3 0
Power  =  Work done  /  Time taken.

Work done =  mgh
Mass, m = 33kg    ( Am presuming it is 33 kg).
h =  85 m.
Work done =  33 * 9.81* 85 =  27517.05  J.

Time taken.
Since object was dropped from height, it fell under gravity.
Using    H =  ut  +  (1/2) * gt^2.              u = 0.
               H =  1/2 gt^2.
               t  =   (2H/g) ^ (1/2)
               t  =  (2*85/9.81) ^ 0.5 =  4.1628 s.

Power  =    27517.05 / 4.1628 = 6610.23 Watts.
             =  6610 W  to  3 S. f.

You might be interested in
a flashlight operates with a current of 3.0 a and a power of 4.5 W. what is the voltage of the flashlights battery?
Dafna11 [192]

Answer:

V=1.5V

Explanation:

p=I×V

4.5=3×V

v =  \frac{4.5}{3}

v =  \frac{3}{2}

v=1.5

4 0
2 years ago
Why are collisions between galaxies more likely than collisions between stars within a galaxy?
KatRina [158]

Answer:

stars share a gravitational force with the galaxy while nearby galaxies do not share a gravitational field.

Explanation:

stars will not collide because they are bound by a gravitational orbit around the galaxy

8 0
3 years ago
What is loess?
Y_Kistochka [10]

A loess is...

<em>A clastic, silt-sized sediment that is formed by the accumulation of wind-blown dust. 10% of the earth's area is covered by loess or similar deposits. </em>

<em>Hope this helps you to find your answer and if you ever need help with anything else I would be happy to help,</em>

~QueenBeauty666~

5 0
2 years ago
Read 2 more answers
In an experiment of a simple pendulum, measurements show that the pendulum has length し 0.397 ± 0.006 m, mass M-0.3172 ± 0.0002
vichka [17]

Answer:

1.)1.265+or minus 0.0006m

2).0.71%

Explanation:

See attached file

6 0
2 years ago
1: Why do the work of scientist cannot be pinned down to a single year?
zalisa [80]
It can't be pinned down to a single year because scientific work takes place over many years of research and discovery. 
7 0
3 years ago
Other questions:
  • An fm radio station broadcasts at a frequency of 101.3 mhz. what is the wavelength?
    12·2 answers
  • Which of the following waves have the highest energy? A. Gamma Waves B. Microwaves C. Radio Waves D. Visible Light
    12·2 answers
  • Two point charges are separated by 6 cm. The attractive force between them is 20 N. Find the force between them when they are se
    5·1 answer
  • Okay i'm totally stuck and nobody I know really gets it either, so i've turned to Yahoo for help :)
    11·2 answers
  • Please help PHYSICS
    7·2 answers
  • A parallel-plate capacitor is charged until it carries charge + q +q on one plate and charge − q −q on the other plate. The capa
    10·1 answer
  • Four wires are made of the same highly resistive material, cut to the same length, and connected in series. Wire 1 has resistanc
    8·1 answer
  • A 41.0-kg child swings in a swing supported by two chains, each 3.04 m long. The tension in each chain at the lowest point is 35
    12·1 answer
  • A 46.8-g golf ball is driven from the tee with an initial speed of 58.8 m/s and rises to a height of 24.7 m. (a) Neglect air res
    13·1 answer
  • Calculate the current flowing if a charge of 36 kilocoulombs flows in 1 hour.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!