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
Slav-nsk [51]
2 years ago
7

Eight 7.0W Christmas tree lights are strung in series to a 110 V light source. What is the resistance of each bulb?

Physics
1 answer:
Evgesh-ka [11]2 years ago
8 0

Answer:

Resistance = 1728.57 Ohms

Explanation:

Given the following data;

Power = 7 Watts

Voltage = 110 Volts

To find the resistance of each bulb;

Mathematically, power can be calculated using the formula;

Power = \frac {Voltage^{2}}{resistance}

Making resistance the subject of formula, we have;

Resistance = \frac {Voltage^{2}}{power}

Substituting into the formula, we have;

Resistance = \frac {110^{2}}{7}

Resistance = \frac {12100}{7}

Resistance = 1728.57 Ohms

You might be interested in
Light is incident on an air-water interface at an angle of 30 degree to the normal. What angle does the refracted ray make with
Vikentia [17]

Answer:

22 degree

Explanation:

Angle of incidence, i = 30 degree

the refractive index of water with respect to air is 4/3.

As the ray of light travels from rarer medium to denser medium, that mean air to water, the refraction takes place.

According to Snell's law,

Refractive index of water with respect to air = Sin i / Sin r

Where, r be the angle of refraction

4 / 3 = Sin 30 / Sin r

0.75 = 2 Sin r

Sin r = 0.375

r = 22 degree

Thus, the angle of refraction is 22 degree.

6 0
3 years ago
675 km equals how much cm ?
irga5000 [103]
KHDMDCM.
Now go from Kilometer to Centimeter: 5.
Move the decimal 5 places to the right: 67,500,000 centimeters.
Hope this helps :)
7 0
3 years ago
J.J. Thomson theorized that, if an atom had all of its negatively charged
Bumek [7]

Answer:

C. Positively charged

Explanation:

The plum pudding model of the atom proposes by J. J. Thomson consisted of electrons which lay embedded as the raisins within a dough or soup that was positively charged. The electron was discovered by J. J. Thomson in 1897 through cathode ray tube experiments.

Based on the plum pudding model, if all the negatively charge electrons contained in an atom are removed, the material remaining will be the <em>positively charged</em> soup

6 0
2 years ago
What factor determines an object's momentum?
vlada-n [284]

Momentum = mass x velocity

So both mass and velocity affect an object's momentum.

3 0
3 years ago
The power is inversely proportional with time
trapecia [35]

Answer:

True

Explanation:

Given that Power whose unit is Watt equates to one joule of work per second. It implies that Power is directly proportional to the work done and inversely proportional to the time to do the work.

Therefore, in this case, the right answer to the question is that it is TRUE that the power is inversely proportional with time

8 0
3 years ago
Other questions:
  • Sodium and phosphorus combine to form Na3P. The name of this compound is .
    14·2 answers
  • What are the units for mass and volume
    8·1 answer
  • An object in free fall travels a distance s that is directly proportional to the square of the time t. If an object falls 1088 f
    10·1 answer
  • Dr. Alley has helped drill many holes in ice sheets. Special tools can be lowered down the holes on cables, and tracked to learn
    11·1 answer
  • A rocket is fired at 100 m/s at an angle of 37, how many seconds is it in the air?
    14·1 answer
  • What physical property makes the red light different from blue light, or radio waves different from microwaves?​
    12·2 answers
  • Which of the following best describes how a transformer works?
    12·1 answer
  • In which condition the acceleration of a moving vehicle become zero​
    6·1 answer
  • Based on the data in the table, what will happen when a sound wave travels
    5·2 answers
  • A 1300 kg steel beam is supported by two ropes. (Figure
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!