HELP PLEASE!!!!!! I REALLY NEED HELP!
(Science) (15 pts)

1. My amplifier uses a filament that requires a maximum of 5 volts at a current of 15 amperes.
Calculate the resistance of the tube. (Round to no more than two numbers to the right of the decimal)

2. How many ohms of resistance are present in a light bulb that draws 2 amperes at 120 volts?

3. A 250 watt radio will draw how many amps when operating on 240 volts? (Round to no more than two numbers to the right of the decimal)

Answers

Answer 1

Answer: The problems of physics that are given here can be solved using Ohms laws. As per the Ohms law, we can write
Resistance = Current/Voltage.
Now coming to the questions that are given.
1. In this question,
Current = 15 amperes
Voltage = 5 volts
Then
Resistance = 5/15
   = 1/3
   = 0.33 ohms
So the resistance of the tube will be 0.33 ohms
2. Given information's are noted below
Current = 2 amperes
Voltage = 120 volts
Resistance = 120/2
   = 60 ohms
So 60 ohms of resistance is present in the bulb.
3. Given information's
Current = 250 watt
Voltage = 240 volts
Resistance = 250/240
   = 25/24
   = 1.04 ohms.
The radio will draw 1.04 ohms.

Related Questions

How can you make 16 dollars using exactly and only 3 bills, one of which is not a 10-dollar bill?
What is 1/2- (2/5) in simplest form?
X squared minus 18x minus 144 equals 0. Solve by factoring.
√64/169 Evaluate. IDK
Please find a solution to this

How to make 9 2/5 into a improper fraction and plz show your work because my brain is not that smart

Answers

Answer:

47/5

Step-by-step explanation:

First step: multiply the denominator (bottom of the fraction) of the fraction by the whole number.

5*9 = 45

Second Step: add the numerator

45 + 2 = 47

Third step: Put the result over the denominator.

47/5

How do you do question 9? If you answer please explain.

Answers

Answer:

bottom left is -2x and bottom right is -3

Step-by-step explanation:

if you were to use a timeline you subtract 5 from 3 and that leaves you -2 and add the x from before and for the bottom right 2 - 5 is negative three if you need help its easy to make a timeline

-3/5(-5/9)Does anybody know how to solve negative problems like this?

Help is appreciated! Thanks! :)

Answers

Answer:

1/3 is your answer.

Step-by-step explanation:

What you do is you have to make the denominator the same.

-27/45(-25/45)

1/3 is your answer.

What is 428.6401 rounded to the nearest whole number ?

Answers

it would be 429 because 5 or more go next door for or less home is best. and 8 is greater then 5

Since you're rounding to the nearest whole number, you use the tenths place to determine how to round it. 6 ≥ 5 so the ones place is rounded up, making 429 your answer.

-1/2u + 3/5= 1/6. What is u?

Answers

So to start off on answering we are going to subtract 3/5 from both of the sides:
−1/2u+3/5−3/5=1/6−3/5
−1/2u=−13/30
Okay, so now we are going to multiply both sides by 2/(-1):
(2/−1)*(−1/2u)=(2/−1)*(−13/30)
The final answer shall be:
u=13/15
I hope this helps!

What does insignificant mean

Answers

"Insignificant" means it's so small that it doesn't have any effect
on the outcome, result, answer, group, or environment. You can
ignore it, and pretend that it's not even there.

Answer:

meaningless

Step-by-step explanation:

Other Questions

Amanda had $20 when she went into the shopping center. She purchased a snack to eat for $y and then bought two items at a clothing store each of which cost $x. Which expression represents the amount of money she has left after the purchases? *

50 Brainly Points answer the question

Match the like terms.Question 1 options:6a²-5x³a-x7y-12x²1. 8x²2. -2a3. 15x³4. 1x5. a²6. 12y

What times what equals 67