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
mrs_skeptik [129]
3 years ago
8

In a simple electric circuit, the current in resistor is measured as (2.50+_0.05)mA. the resistor is marked as having a value of

4.7ohm+_2 %
if these values were used to calculate the power dissipated in the in the resistor . what would be the percentage uncertainty in the value.
Physics
2 answers:
lesya692 [45]3 years ago
8 0
Here is a hint for you
P=VI=IR*I=I^2R
Ostrovityanka [42]3 years ago
3 0

Answer:

6%

Explanation:

current I = 2.5±.05 mA =2.5± .05x 100/2.5 = 2.5 ± 2%

resistance R =4.7 ± 2 %

power P = I² R

ΔP/Px 100 = 2ΔI/I x 100 + ΔR/R x 100

% uncertainty in P = 2x % uncertainty in I  + % uncertainty in R

% uncertainty in P =2x 2% + 2 % = 6 %

You might be interested in
I have these questions I need to find the acceleration, Please explain how to do them, Don't have to explain all xD
34kurt
1. a=(v-v0)/t
a=14 m/s / 2s
a=7 m/s^2
2. <span>a=(v-v0)/t
</span>a=(30 m/s - 0 m/s) / 12 s
a=2.5 m/s^2
3. <span>a=(v-v0)/t
a=(37 m/s - 22 m/s) / 2 s
a= 7.5 m/s^2
4. </span><span>a=(v-v0)/t
a=(12 km/s - 0 km/s)/8 s
a=1.5 km/s^2
etc</span>
7 0
4 years ago
What is oscillating to form a light wave?
aniked [119]
I think the answer is B ( matter )
5 0
4 years ago
What we are thinking about or are aware of at any given moment is in our?
jarptica [38.1K]
The term that is being described above is our CONSCIOUSNESS. When we are conscious, we are fully aware of what we are thinking in any given moment like our thoughts, feelings, memories, and even our sensations. Being conscious makes us feel that we are capable of doing and feeling something for the moment.
6 0
3 years ago
Read 2 more answers
What does the diagram show about phases and the phase of the substance as it is heated? Check all that apply.
Romashka [77]

Answer:

2 and 4

Explanation:

right on edge

7 0
3 years ago
Read 2 more answers
On the return home, the cyclist accelerates from 2.0 m/s with a an acceleration of 2.2 m/s 2 . Calculate the time it takes the c
jonny [76]

motion

vt=vo+at

10 m/s = 2 m/s + 2.2 m/s².t

8 = 2.2t

\tt t=\dfrac{8}{2.2}=3.63~s

7 0
3 years ago
Other questions:
  • What is the preception of intensity?​
    15·1 answer
  • Your spaceship lands on an unknown planet. To determine the characteristics of this planet, you drop a wrench from 3.00 m above
    12·1 answer
  • Do electric field lines actually exist?​
    7·1 answer
  • Calculate the net force experienced by Mr. Ferrari if he has a mass of 100 kg and an acceleration of 3.5 m/s/s.
    12·2 answers
  • What is the purpose of doing the whole body stretch from head to toe?
    8·1 answer
  • _____ waves are Longitudinal waves caused by an earthquake!
    7·2 answers
  • When does the difference between two vectors equal to zero ?
    15·1 answer
  • HELP ASAP PLEASE HELP WITH QUESTION TIMED
    15·1 answer
  • I NEED HELP ASAP I WILL GIVE BRAINLIEST ITS DUE TODAY
    6·1 answer
  • What were formed after the big bang theory?​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!