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
nikitadnepr [17]
3 years ago
8

F a light bulb produces 60.0 J of electrical energy and is 45% efficient, how much energy does it use?

Physics
2 answers:
motikmotik3 years ago
7 0
The answer is A
60 J = 45%
So meaning it wants to know all 100%
So it will be a little over 120 and the closest one is 133
(please don’t do what do!!)
liberstina [14]3 years ago
6 0

Answer:

133 j

Explanation:

You might be interested in
This is one popular brand of exercise machine for a crossword puzzle
Rudiy27

Answer:

Aerobics I think.

Explanation:

7 0
2 years ago
The flow of air caused by blend in the blank creates distant blank on earth surface
Mamont248 [21]

Question:

The flow of air caused by _____ and the Coriolis effect creates distinct _____ on Earth's surface.

Answer:

  1. Differences in heating
  2. Wind patterns

Explanation:

The flow of air caused by <u>variations in the rate at which the different parts are heated</u> up as well as the Coriolis effect combine to create distinct <u>wind patterns </u>on Earth's surface.

The Coriolis Effect is used to describe a "force" that causes things (like objects, planes, air currents) traveling long distances around the Earth to appear to bend as they move rather than in a straight line.

Cheers

8 0
3 years ago
Water is falling on a surface, wetting a circular area that is expanding at a rate of 4 mm2 /s. How fast is the radius of the we
STALIN [3.7K]

Answer:

The radius of the wetter area expands at a rate of 4.244\times 10^{-3} milimeters per second when radius is 150 milimeters.

Explanation:

From Geometry we remember that area of a circle is described by this expression:

A =\pi\cdot r^{2} (Eq. 1)

Where:

r - Radius of the circle, measured in milimeters.

A - Area of the circle, measured in square milimeters.

Then, the rate of change of the area in time is derived by concept of rate of change, that is:

\frac{dA}{dt} = 2\pi\cdot r\cdot \frac{dr}{dt} (Eq. 2)

Where:

\frac{dr}{dt} - Rate of change of radius in time, measured in milimeters per second.

\frac{dA}{dt} - Rate of change of area in time, measured in square milimeters per second.

Now the rate of change of radius in time is cleared within equation above:

\frac{dr}{dt} = \left(\frac{1}{2\pi\cdot r}\right)\cdot \frac{dA}{dt}

If we know that r = 150\,mm and \frac{dA}{dt} = 4\,\frac{mm^{2}}{s}, then the rate of change of radius in time is:

\frac{dr}{dt} = \left[\frac{1}{2\pi\cdot (150\,m)} \right] \cdot \left(4\,\frac{mm^{2}}{s} \right)

\frac{dr}{dt}\approx 4.244\times 10^{-3}\,\frac{mm}{s}

The radius of the wetter area expands at a rate of 4.244\times 10^{-3} milimeters per second when radius is 150 milimeters.

7 0
3 years ago
How would one be able to travel in time?
diamong [38]
The most important thing that one would need to have is a clear, vivid, active, convincing imagination. In reality, time travel is not possible.
7 0
3 years ago
What is the volume of a cube whose side is 10 cm?
anyanavicka [17]

the first one Is right answer

6 0
3 years ago
Read 2 more answers
Other questions:
  • A radio station's channel, such as 100.7 fm or 92.3 fm, is actually its frequency in megahertz (mhz), where 1mhz=106 hz and 1hz=
    7·2 answers
  • A driven RLC circuit is being driven by an AC emf source with a maximum current of 2.75 A and maximum voltage of 150 V. The curr
    5·1 answer
  • Sam and Ella are arguing at the baseball field. Sam says that if he throws a baseball with a greater speed, it will have a great
    6·2 answers
  • When a substance has changed into something new or different so that the original substance is gone, as in digestion, radioactiv
    9·2 answers
  • HELP ME!!
    13·1 answer
  • A _______ is a very massive object in space that does not allow any object or radiation to escape its gravitational hold.
    8·2 answers
  • Four satellites are in orbit around the Earth. The heights and the masses of
    15·1 answer
  • How does the shape of the moon change over 4 weeks
    12·1 answer
  • A broken flower is an example of an inherited trait of a plant.<br><br> True Or False
    14·1 answer
  • The net force is 180 and the mass is 1.793 what is the acceleration
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!