3 years ago

Find the resistance of a stereo: current is 7 A voltage is 49 V.

Physics

1 answer:

pochemuha3 years ago

5 0

Answer:

R = 7 [amp]

Explanation:

To solve this problem we must use ohm's law which tells us that the voltage is equal to the product of the current by the resistance. In this way, we have the following equation.

V = I*R

where:

V = voltage = 49 [V] (units of volts)

I = current = 7 [amp] (amperes)

R = resistance [ohms]

Now clearing R.

R =V/I

R = 49/7

R = 7 [amp]

You might be interested in

Elements from which two groups in the periodic table would most likely combine

Katarina [22]

The answer is actually 1 & 17, maybe you meant to put 1&17 as option b

8 0

2 years ago

Clyde and Marilyn are riding a roller coaster. During which section of the track is their potential energy converted to kinetic

Alex17521 [72]

Potential energy is when the roller coaster rises. Kinetic energy is when the roller coaster declines.

5 0

3 years ago

Heat a liquid high enough and it will change into a

nikdorinn [45]

Well it depends on what kind of liquid, some liquids if you heat it up itll turn into a solid, but most just turn into a gas

5 0

3 years ago

Two red blood cells each have a mass of 9.05×10−14 kg and carry a negative charge spread uniformly over their surfaces. The repu

belka [17]

Answer:

v = 330.7 m/s

Explanation:

Let say initially the speed of two blood cells is v and they are far apart from each other

when they come to the closest distance to each other then in that case the initial total kinetic energy of two blood cells will convert into electrostatic potential energy of the cells

So we can say

$\frac{1}{2}mv^2 + \frac{1}{2}mv^2 = \frac{kq_1q_2}{2r}$