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
Serga [27]
3 years ago
5

Zad. 1. Jaką pracę wykona dźwig, który pracował przez 1,5 h napędzany silnikiem o mocy 200 kW?

Physics
1 answer:
Alekssandra [29.7K]3 years ago
7 0

Answer:

Explanation:

1) Moc to wskaźnik czasu pracy w stosunku do czasu.

Moc = czas pracy / czas

Czas pracy = moc * czas

Podana moc = 200 kW = 200 000 Watów

Czas = 1,5 godziny = 1,5 * 3600 = 5400 sekund

workdone = 200 000/5400

Obróbka = 37,04 dżula

2) Moc = Gotowe / czas

Od zakończenia = Siła * Odległość

Moc = siła * Odległość / czas

Podana siła = 300 N.

Odległość = 2,5 m

czas = 0,5 min = 0,5 * 60 = 30 sekund

Moc = 300 * 2,5 / 30

Moc = 25 watów

3) Moc = Gotowe / czas

Czas potrzebny = praca / moc

Biorąc pod uwagę pracę wykonaną przez ciągnik = 10 MJ = 10 * 10 ^ 6 Dżuli

Moc = 100 kW = 100 000 watów

Czas wzięty = 10 ^ 7/10 ^ 5

Zajęty czas = 100 sekund

You might be interested in
A force F₁ of magnitude 6.50 units acts at the origin in a direction 49.0° above the positive x axis. A second force F₂ of magni
Sergeu [11.5K]
Found this hope it helps

4 0
4 years ago
Communication satellite use__sent by a transmitting station to transmit signals over long distances A microwaves B polar waves C
Verdich [7]

D: radio waves

Explanation:

radio wves are use to carry satellite signals

7 0
3 years ago
A wheel of mass M and radius R rolls on a level surface without slipping. If the angular velocity of the wheel about its center
Verizon [17]
The most important thing you should remember in order to get how is its linear momentum relative to the surface is that the<span> point on the circumference is moving at w rad/second. 
Therefore, here is the solving formulae:
if </span>v = R * w you can easily get <span> linear momentum p :
</span> p = M * v = M * R * w
I'm sure that helps.
4 0
3 years ago
A child holds one end of a 33.0-meter long rope in her hand and moves it up-and-down to produce a sinusoidal wave by moving her
WITCHER [35]

Answer:

Wavelength=75 cm.

The wavelength well remain unchanged which is 75 cm.

Explanation:

The formula which will help us to answer the question is:

V=f*λ

Where:

V is the velocity

f is the frequency of wave

λ is the wave length

Now:

λ=V/f    Eq (1)

The equation show's that wavelength is independent of the amplitude but it depends on the frequency and the velocity with which wave is moving.

The wavelength well remain unchanged which is 75 cm.

6 0
3 years ago
Binding energy is the energy needed to
densk [106]

Answer:

Answer C

Explanation:

4 0
3 years ago
Other questions:
  • following statement supports which theory? "Astronomers have observed protoplanetary disks around distant newborn stars." Big Ba
    8·2 answers
  • If you lift one load up two stories, how much work do you do compared to lifting one load up only one story?
    11·1 answer
  • When resistors are connected in series, we can be certain that:______
    12·1 answer
  • What is the equations to prove the answer is A?
    13·1 answer
  • The terminal speed of a sky diver is 163 km/h in the spread-eagle position and 325 km/h in the nosedive position. Assuming that
    7·1 answer
  • An object has rotational inertia I. The object, initially at rest, begins to rotate with a constant angular acceleration of magn
    8·1 answer
  • A nuclear power plant operates at 79 percent of its maximum theoretical (Carnot) efficiency between temperatures of 700° and 330
    8·1 answer
  • What’s the resistance of the circuit
    9·1 answer
  • Un muelle se alarga 20 cm cuando ejercemos sobre él una fuerza de 24 N. Calcula:El valor de la constante elástica del muelle
    12·1 answer
  • What is the coolest thing one earth to you?!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!