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
abruzzese [7]
3 years ago
5

How much energy is used when the incandescent bulb is left on for 12 hours

Physics
1 answer:
Reil [10]3 years ago
3 0

You haven't told us the "wattage" rating of the bulb.  We'll just have to call it ' W ' .

The bulb uses energy at the rate of W watts, or 0.001W kilowatts.

In 12 hours, it uses <em>0.012W kilowatt-hours </em>of energy.

= = = = =

W watts = W Joules/second

1 hour = 3600 seconds

12 hours = (12 x 3600) seconds

Energy = (W Joule/sec) x (12 x 3600 sec)

<em>Energy =  43,200W Joules</em>

You might be interested in
Joe balances a stationary coin on the the tip of his finger 20 cm from the top of the table. How much work is Joe doing?
adell [148]

The work done by Joe is 0 J.

<u>Explanation</u>:

When a force is applied to an object, there will be a movement because of the applied force to a certain distance. This transfer of energy when a force is applied to an object that tends to move the object is known as work done.

The energy is transferred from one state to another and the stored energy is equal to the work done.

                                 W = F . D

where F represents the force in newton,  

          D represents the distance or displacement of an object.

Force = 0 N,   D = 20 cm = 0.20 m

                                 W = 0 \times 0.20 = 0 J.

Hence the work done by Joe is 0 J.

7 0
3 years ago
Crude oil is a mixture of many different components. The extraction of crude oil from the Earth is important, but its refinement
Neporo4naja [7]

Answer: Different fuel components boil at different temperatures, allowing them to be separated.

Explanation:

3 0
3 years ago
The charges Q1=Q and Q2=4Q that are a distance d apart, repel each other with a force of 1.60 N. What would be the force between
gladu [14]

Answer:

50.4 N

Explanation:

Q1 = Q

Q2 = 4 Q

Distance = d

The force is given by

F = \frac{KQ_{1}Q_{2}}{d^{2}}

1.60 = \frac{4KQ^{2}}{d^{2}}    .... (1)

Now,

Q3 = 2 Q

Q4 = 7 Q

distance = d/3

F' = \frac{9KQ_{3}Q_{4}}{d^{2}}

F' = \frac{126KQ^{2}}{d^{2}}   .... (2)

Divide equation (2) by equation (1), we get

F' / 1.60 = 126 / 4

F' = 50.4 N

Thus, the force is 50.4 N.

7 0
3 years ago
The Nucleus of the Atom is in the center of the Atom, not in the outer rings &amp; orbitals.
chubhunter [2.5K]

Answer:

true

Explanation:

this the nucleus is located at the centre and contains protons and neutrons

3 0
3 years ago
What are flavonoids responsible ?
Radda [10]

Answer: Flavonoids are a diverse group of phytonutrients (plant chemicals) found in almost all fruits and vegetables. Along with carotenoids, they are responsible for the vivid colors in fruits and vegetables. ... Like other phytonutrients, flavonoids are powerful antioxidants with anti-inflammatory and immune system benefits.

Explanation:

8 0
3 years ago
Other questions:
  • The process of achieving fitness in the human body is almost instant and can occur overnight. True or False
    5·1 answer
  • An airplane flies 33 m/s due east while experiencing a tailwind
    13·1 answer
  • What is the stopping distance if the car is initially traveling at speed 5.0v? assume that the acceleration due to the braking i
    8·1 answer
  • Abnormal protrusion of the eye out of the orbit is known as
    13·1 answer
  • Help uhh i need to know this answer
    12·1 answer
  • A hot-air balloon plus cargo has a mass of 308 kg and a volume of 2910 m3 on a day when the outside air density is 1.22 kg/m3. T
    8·1 answer
  • What is the mass of 2.5 mol of Ca, which has a molar mass of 40 g/mol?
    11·1 answer
  • Sa fait combien 2×5÷6​
    7·2 answers
  • Explain the basic reason of conduction of an electric current through a conductor.​
    5·2 answers
  • What is a topgraphic map?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!