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
CaHeK987 [17]
3 years ago
12

A common flashlight bulb is rated at 0.23 a and 2.9 v (the values of the current and voltage under operating conditions). if the

resistance of the bulb filament at room temperature (20°c) is 1.1 ω, what is the temperature of the filament when the bulb is on? the temperature coefficient of resistivity is 4.3 × 10-3 k-1 for the filament material.
Physics
1 answer:
allochka39001 [22]3 years ago
6 0
The resistance at operating temperature is R = V/I = 2.9 V / 0.23A = 12.61 ohmsT from R – R0 = Roalpha (T – T0), we find that:T = T0 + 1/alpha (R/R0 -1) = 20 degrees Celsius + (1/ 4.3 x 10^-3/K) (12.61 ohms/ 1.1 ohms – 1)T = 2453.40 degrees Celsius
You might be interested in
If a 5kg ball is traveling at 20 m/s and it’s stopped in 4s, what’s the impulse on the ball?
Anna [14]
FT=MV

F(4)=(5)(20)

F= 100/4

F= 25 N
4 0
3 years ago
Which of the following most likely happens when the temperature of a chemical reaction is increased?
Diano4ka-milaya [45]
Molecules Speed Up because the other three options only occur when the temperature is decreased.
5 0
3 years ago
Read 2 more answers
Does it take more force to slow something down than to speed it up.
ANTONII [103]
To bring something to a stop the same force that was applied to speed it up can be used to stop it. If a greater force is used it will stop quicker.
7 0
3 years ago
Oceanic water particles mainly move in circles; is this movement greater on the ocean's surface or below the surface? Explain yo
goblinko [34]
I think that the oceanic water particles mainly move in circles greater in the oceans surface because of how big the waves can be and how wind and air impact the motion. The water particles move more on the surface because of the other factors that impact it such as people, wind, air, etc...
5 0
2 years ago
________ reaction time involves selecting a specific and correct response from several choices when presented with several diffe
lukranit [14]
Simple reaction time involves selecting a specific and correct response from several choices when presented with several different stimuli. This is very important because historically, this was the first indicators of intelligence pioneered by Francis Galton. To measure one’s intelligence is to know how he quick a person could respond to the stimulus with an already expected response wherein the stimulus is given unknown to the receiver. In other terms, the intelligence is measured on how quick a person could grasp certain concepts and how he could think fast and answer them correctly. <span> </span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • A waist-to-hip ratio of 1.0 is considered healthy.<br><br> True<br> False
    5·2 answers
  • What is the distance between two points (3,4,-5) and (2,1,0,)
    14·1 answer
  • 8,000 mg + 2 g = _____________ mg?
    14·2 answers
  • ¿Juan quiere calentar una barra de aluminio de 100 g, para realizar un trabajo. La temperatura ambiente es de 27°C pero necesita
    10·1 answer
  • Balanced forces acting on an object
    8·1 answer
  • Density is mass / volume. (D = m/V) A loaf of bread has a volume of 2270 cm3 and a mass of 454 g. What is the density of the bre
    7·1 answer
  • Objects fall near the surface of the earth with a constant downward acceleration of 10 m/s2 . At a certain instant an object is
    11·1 answer
  • When a ball bounces back when you throw it at a wall, what occurs?
    11·2 answers
  • What causes sounds that are lower than 0 decibels?
    8·1 answer
  • Nbel! You’re okay! What happened to you?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!