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
Lorico [155]
3 years ago
12

19. Find the current in a circuit if the power is 500 W (watts) and the resistance is 25 ohms. Round off your answer to two deci

mal places. Use the formula . A. 4.47 A B. 0.22 A C. 20 A D. 0.05 A
Mathematics
1 answer:
HACTEHA [7]3 years ago
4 0

Answer:

A

Step-by-step explanation:

The formula that relates current, power and resistance is

I=\sqrt{\frac{P}{R}}

Where

I is the current (in amperes)

P is the power (in watts)

R is the resistance (in ohms)

We know P = 500 and R = 25, we plug them into the formula and solve for I:

I=\sqrt{\frac{P}{R}}\\I=\sqrt{\frac{500}{25}}\\I=\sqrt{20}\\ I=4.47

Correct answer is 4.47 Amperes, or choice A.

You might be interested in
Find the measure of x . Answer me please
Komok [63]

Answer:

40

Step-by-step explanation:

The sum of measure of exterior angles is equal to 360

5x-20+2x+5+x+15+x = 360 add like terms

9x = 360 divide both sides by 9

x = 40

4 0
3 years ago
PLEASE HELP THIS IS URGENT!!!!
vichka [17]

Answer:

I believe it would be 21 units . dont let extra line's confuse you just pay attention to the letters its asking for

6 0
2 years ago
Which expression models the phrase “Wally mowed two more lawns than he mowed last week”?
VLD [36.1K]
Answer: n+2

Two lawns more than last week so two more than something with n being that something is; n+2
4 0
3 years ago
Read 2 more answers
Will pick brainlyest help me plz 15 pts
leonid [27]
1.50c + 2.50a = 1100
c + a = 500

multiply the second equation by -1.50
                    
                      1.50c + 2.50a = 1100
-1.50c - 1.50a = -7.50


8 0
3 years ago
Jennifer is leasing a car from a local auto retailer. The terms of the lease include a 9% interest rate for 36 months with a res
katrin [286]
1. The problem gives the residual value in percentage, and you need it in dollars. So, if the MSRP for the car Jennifer is leasing is $ 17,500, you have:

 57%/100=0.57

 residual value=$17,500*0.57= $9,975

 2. Then, you need to substract the residual value and the lease term, to calculate the value of the car, as below:

 car value=$17,500-$9,975=$7,525

 3. You need to calculate the money factor, which is the interest rate divided by 2400. Then, you have:

 Interest rate=9%/100=0.09

 Money factor=0.09x2400
 Money factor=0.00375

 4. The interest is:

 I=($17,500+$9,975)(0.00375)
 I=$103.03

 5. Therefore, the monthly payment is:

 Monthly payment=(car value/36 months)+Interest
 Monthly payment=($7,525/36)+$103.03
 Monthly payment=$209.02+$103.03
 Monthly payment=$312.06

 What will Jennifer’s monthly lease payment be?

 The answer is: d. $312.06
6 0
2 years ago
Read 2 more answers
Other questions:
  • Find the value of w.<br> 6w = 90
    12·2 answers
  • I require assistance.
    14·1 answer
  • 33 1/3% of what number is 21
    8·2 answers
  • Please help me, and explain step by step. Angle 1 and angle 2 are supplementary angles. angle 1 is 4y+7, and angle2 is 9y+4. Fin
    15·2 answers
  • Which line on the graph represents the information in the table?
    6·2 answers
  • Which of the following are valid names for the given polygon
    14·1 answer
  • Sergio y Camila, decidieron juntar sus ahorros para comprar una cámara de video que cuesta $5 400.00. Si Sergio puso un medio de
    9·1 answer
  • If you and a friend get a job painting houses for a summer job. You can paint a room
    6·2 answers
  • Find A in degrees. Round to the
    6·1 answer
  • 13 ft :10 ft 18 ft Find the area of the trapezoid. [? ] square feet Hint: The formula for the area of a trapezoid is: (b17b2). h
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!