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
lina2011 [118]
3 years ago
15

Using a 1-kW heater for one hour consumes more energy than using a 100-W bulb for twenty-four hours. Please select the best answ

er from the choices provided
T

F
Physics
1 answer:
Ierofanga [76]3 years ago
8 0
Power is the amount of work done per unit of time. It will have units of Watts which is equal to Joules per second. We determine the energy of each system above by multiplying the power with time. We do as follows:

E(heater) =1000 W (1 hr) (3600s/hr) = 3,600,000 J
E(bulb) = 100 W (24 hr) (3600s/hr) =   8,640,000 J

Therefore, the answer would be false. It is the bulb that consumes more energy.
You might be interested in
One characteristic of mass wasting processes is that they a. only operate on steep slopes. b. move materials very slowly. c. ope
lord [1]

Answer:

One characteristic of mass wasting processes is that they move materials relatively short distances compared to streams. - d.

4 0
3 years ago
work done as mass 1 moves to mass 2. the gravitational force between two point masses separated by a distance r is proportional
pav-90 [236]

Answer:

gravitational force

3 0
2 years ago
A certain type of laser emits light that has a frequency of 4.2 × 1014 Hz. The light, however, occurs as a series of short pulse
bogdanovich [222]

Explanation:

It is given that,

Frequency of the laser light, f=4.2\times 10^{14}\ Hz

Time, t=3.2\times 10^{-11}\ s

(a) Let \lambda is the wavelength of this light. It can be calculated as :

\lambda=\dfrac{c}{f}

\lambda=\dfrac{3\times 10^8}{4.2\times 10^{14}}

\lambda=7.14\times 10^{-7}\ m

or

\lambda=714\ nm

(b) Let n is the number of the wavelengths in one pulse. It can be calculated as :

n=f\times t

n=4.2\times 10^{14}\times 3.2\times 10^{-11}

n = 13440

Hence, this is the required solution.

8 0
2 years ago
An astronaut is walking in space. Which of these would have the greatest speed as observed by the astronaut?
Aleks04 [339]
The answer is C) an electromagnetic wave

An electromagnetic wave, which includes electromagnetic radiation such as visible light, moves the fastest of all of the options listed by a significant margin, especially through space. In fact, light travelling through space is technically the theoretical limit of how fast something can travel. 
4 0
3 years ago
Read 2 more answers
Please someone answer this ASAP❗️❗️‼️‼️
kogti [31]
Starting making jokes and rapping
5 0
3 years ago
Other questions:
  • The presence of a uniform magnetic field may be detected by using a
    6·2 answers
  • What are the three categories of adult development?
    9·1 answer
  • Which of the following effects is produced by the high surface tension of water? Which of the following effects is produced by t
    14·1 answer
  • The tendency for an object to sink or float has to do with the object's density.<br> True<br> False
    7·1 answer
  • The unique name given to each organism ; made up of Genus and species..is..?
    10·1 answer
  • Please help i really need it.<br> this is my physic exam
    11·2 answers
  • Please help.... please guys
    5·1 answer
  • A car, initially traveling at 81.8 mi/h, slows to rest in 7.1 s. What is the car's acceleration?
    7·1 answer
  • A ball is thrown vertically upwards with a velocity of 30m/s. Determine the maximum height reached
    11·1 answer
  • 3. A bottle of vitamin C contains 100 tablets and weighs 80 g. If the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!