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
MatroZZZ [7]
3 years ago
14

A 4watt night light is left on for 8 hours each night. how much work does it do per night

Physics
1 answer:
nlexa [21]3 years ago
7 0

Power = (work) / (time)

Work = (power) x (time)

          = (4 watts) x (8 hours)

1 "watt" = 1 joule/sec .

Work = (4 joule/sec) x (8 hours) x (3,600 sec/hr)

         = (4 x 8 x 3,600) joules  =  1,024 joules .

==================================

Another way:

4 watts = 0.004 kilowatt

Work = energy = (power) x (time)

                        = (0.004 kw) x (8 hrs)  =  0.032 kilowatt-hour .

You might be interested in
How do latitude and proximity to bodies of water relate to the temperature?
SSSSS [86.1K]

Answer:

The answer is below.

Explanation:

According to geographical coordinates and related information, when the latitude is lower, that is closer to the equator the temperature becomes warmer. While the far away from the equator the latitude is the temperature decreases.

Similarly, the water bodies have a relative effect that is considered little or less severe on the temperature throughout any of the seasonal period or day and night.

7 0
3 years ago
How much work is done by the force of gravity when the book is released?
Naya [18.7K]

Answer:

please see picture

Explanation:

and mark me brainliest

3 0
3 years ago
Which of the following is the best name for NO3?
Karo-lina-s [1.5K]
<span>Nitrogen trioxide is the best name for NO3. </span>
6 0
3 years ago
A 8.0-g bullet with an initial velocity of 115.0 m/s lodges in a block of wood and comes to rest at a
Gnesinka [82]
A. When your fire a bullet into the air, it typically takes between 20 and 90 second for it to come down,depending on the angle it was fired at,its muzzle velocity and caliber.
3 0
3 years ago
Arsine, ash3 is a highly toxic compound used in the electronics industry for the production of semiconductors. its vapor pressur
Natalka [10]

Answer:  a. 17.7 KJ/Mol

b. T=210K

Explanation:

Arsine, ash3 is a highly toxic compound used in the electronics industry for the production of semiconductors. its vapor pressure is 35 torr at – 111.95°c and 253 torr at – 83.6°c. using these data calculate.

the question isnt completely originally, but we could look at the likely derivation from the questions

(a) the standard enthalpy of vaporization

using the clausius clapeyron equation

In (PT1vap / PT2vap) = delta H (vap) / R ( (1/T1) - (1/T2) )

In (35Torr/253Torr) = delta H (vap) / 8.3145 ( (1/189.55) - (1/161.2) )

Therefore, Delta H (vap) = 17.7 KJ/Mol

b. Also the boiling point

What is the normal boiling point of arsine?

At the boiling point Pvap = atmospheric pressure = 1 atm=760 torr

substitution into the equation as stated in question 1

ln(760/253)=17700/8.314(1/189.55-1/T)

T=210K

5 0
3 years ago
Other questions:
  • I'm having trouble understanding the equation for average speed. Can someone please explain to me because I have a test tomorrow
    8·1 answer
  • During the day, the sun appears yellow in the sky. But as sunset approaches, the sun appears to change color. This can be explai
    6·1 answer
  • A 45.0kg box is moving at 3.00m/s what is the kinetic energy of the box
    8·1 answer
  • A garden hose with a small puncture is stretched horizontally along the ground. The hose is attached to an open water faucet at
    11·1 answer
  • A 0.1-kilogram block is attached to an initially unstretched spring of force constant k = 40 newtons per meter as shown above. T
    11·1 answer
  • Increased air pressure on the surface of hot water tends to
    12·1 answer
  • Find the current is in the circuit? ​
    9·1 answer
  • How much water makes up earth in percentages? thx?
    9·1 answer
  • True or False: The basketball should be dribbled below the waist.
    14·1 answer
  • I'm studying the equilibrium of forces so hard that I got confused for a sec. Is the force due to gravity included in summing up
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!