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Igoryamba
3 years ago
8

Efficiency is the ratio of output work to input work, expressed as a percentage. Light bulbs put out less light energy than the

amount of electrical energy that is put into the bulb. The goal of the bulb is to produce light. What is the efficiency of this bulb as it works to put out light? 10% 80% 90% 100%
Physics
2 answers:
Lady_Fox [76]3 years ago
6 0

Answer:10%

Explanation:

Ivanshal [37]3 years ago
5 0

The answer is 10%. just took the test. hope it helps!!

You might be interested in
How many degenerate orbitals can be found in each p subshell?
baherus [9]

Answer:

3

Explanation:

For p-subshell we have the value of angular quantum number as l = 1 & the degenerate orbitals are numbered from -l to +l.

  • Therefore here we have -1,0,+1 as the three degenerate orbitals of p subshell.

This is in accordance with the Schrodinger's model that allows the electron to occupy a three dimensional space. It therefore requires three quantum numbers, to describe the orbitals in which electrons can be found. The three coordinates that come from Schrodinger's wave equations are the principal (n), angular (l), and magnetic (m) quantum numbers.

These quantum numbers decide the shape, size and orientation in space of the orbitals on an atom.

3 0
3 years ago
What is the mass of the lunar landing module on the moon? kg
son4ous [18]

Answer:

4,200 kg

Explanation:On Earth, the mass of one of the lunar landing modules used to explore the moon was measured to be about 4,200 kg.

hope this helps you :D

6 0
3 years ago
A car battery with a 12 V emf and an internal resistance of 0.037 Ω is being charged with a current of 45 A. Note that in this p
matrenka [14]

Answer:

Part a)

V = 13.665 V

Part b)

P = 74.9 Watt

Part c)

P = 540 watt

Part d)

P_r = 0.878

Explanation:

Part a)

As we know that the during the charging process of the battery the terminal voltage of the cell is given as

V = E + iR

V = 12 + (0.037)(45)

V = 13.665 V

Part b)

Thermal energy dissipated in the battery is due to its internal resistance

so it is given as

P = i^2 R

here we have

P = 45^2 (0.037)

P = 74.9 Watt

Part c)

rate of energy conversion in the in the battery is given as

P = E. i

P = 12(45)

P = 540 watt

Part d)

percentage of the power conversion is given as

Pr = \frac{P_{out}}{P_{total}}

Pr = \frac{540}{540 + 74.9}

P_r = 0.878

6 0
3 years ago
the velocity of a body of mass 60kg reaches 15m/s from 0m/s in 12 second. calculate the kinetic energy and power of the body.​
larisa [96]

Answer:Answer

0

Brainly User

Answer:

u = 15m/s

mass =60 kg

v =5 m/s

t = 12 sec

E k= 1/2 ×m v square

= 1/2 (15-5)×(15-5)×60

=1/2 × 10 ×10×60

30 × 100

3000J

power = energy / time

= 3000/ 12

= 250 watt

Explanation:

3 0
3 years ago
A change in the gene pool of a population due to chance is _____.
Mrac [35]
<span>The correct answer should be a genetic drift. Mutations usually occur over a relatively short period of time and usually start with a single unit that transfers the mutation when they procreate. Genetic drifts separate entire populations and in time create new species that cannot procreate with the original species from whence they came.</span>
5 0
3 years ago
Read 2 more answers
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