Step-by-step explanation:
Effective resistance in the 30Ω and 40Ω parallel circuit = 1 / (1/30 + 1/40) = 120/7 Ω.
20Ω + 10Ω = 30Ω
Effective resistance in the 50Ω and (20Ω + 10Ω) parallel circuit = 1 / (1/50 + 1/30) = 75/4 Ω.
Now we can add the resistances up:
Effective resistance for circuit
= 120/7 Ω + 75/4 Ω = 1005/28 Ω.
Hence I = V / R
= 9.0V / (1005/28 Ω) = 0.25A. (2s.f.)
A number of bacteria after 30 hours is 480 bacteria.
The answer is 480 because originally the amount was 80. After 12 hours it doubled to 160. Then after 24 hours have passed, the amount doubled again. So now the amount is 320 bacteria. Then 6 hours passed (half of 12 hours) so then you add half of that amount (160) to 320. 320 plus 160 is 480. So the answer is 480
Answer:
It will arrive at 19:24 pm at london
Step-by-step explanation:
Distance between London and Manchester = 195 miles
Speed of coach = 50 mph
Time taken to cover the given distance =
Time taken to cover the given distance =
1 hour = 60 minutes
0.9 hours =
So,Time taken to cover the given distance = 3 hours 54 minutes
He left at 15:30 pm
Total time taken = 3 hours 54 minutes
It will arrive at time =19:24 pm
Hence it will arrive at 19:24 pm at London
Answer:
Step-by-step explanation:
<h3>to understand this</h3><h3>you need to know about:</h3>
<h3>tips and formulas:</h3>
- when two shapes are similar the rotio of two sides or area or parimeter is equal
<h3>let's solve:</h3>
let the parimeter of second shape be x
Answer:
minecraft
Step-by-step explanation:
okay I agree with this question