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3 years ago

State the ohm's law in words

Physics

2 answers:

Anton [14]3 years ago

5 0

Explanation:

Ohm's law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and directly proportional to the resistance of the circuit. The formula for Ohm's law is V=IR.

Crazy boy [7]3 years ago

3 0

Answer:

Ohm's law might be communicated numerically as V/I = R. That the obstruction, or the proportion of voltage to flow, for all or part of an electric circuit at a proper temperature is by and large steady had been set up by 1827 because of the examinations of the German physicist Georg Simon Ohm.

Explanation:

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A race car accelerates from rest to a velocity of +90 m/s over a distance of 423m. Determine the acceleration of the race car.

dlinn [17]

Answer:

9.57m/s²

Explanation:

Given parameters:

Initial velocity = 0m/s

Final velocity = 90m/s

Distance = 423m

Unknown:

Acceleration of the race car = ?

Solution:

To solve this problem, we should apply one of the appropriate motion equations;

V² = U² + 2as

Where V is the final velocity

U is the initial velocity

a is the acceleration

s is the distance

90² = 0² + 2 x a x 423

8100 = 846a

a = 9.57m/s²

4 0

4 years ago

A 6.00 kg ball is dropped from a height of 12.0 m above one end of a uniform bar that pivots at its center. The bar has mass 5.0

Andre45 [30]

Answer:

The height of the other ball go after the collision is 2.304 m.

Explanation:

Given that,

Mass of ball = 6.00 kg

Height = 12.0 m

Mass of bar =5.00 kg

Length = 4.00 m

Suppose we need to calculate how high will the other ball go after the collision

We need to calculate the velocity of ball

Using formula of velocity

$v=\sqrt{2gh}$

$v=\sqrt{2\times9.8\times12.0}$

$v=15.33\ m/s$

We need to calculate the angular momentum

Using formula of angular momentum

$l_{before}=mvr$

Put the value into the formula

$l_{before}=6.00\times15.33\times2.0$

$l_{before}=183.96\ kgm^2/s$

We need to calculate the angular momentum

Using formula of angular momentum

$l_{after}=I_{t}\omega$

$l_{after}=(\dfrac{ml^2}{12}+m_{1}r^2+m_{2}r^2)\omega$

Put the value into the formula

$l_{after}=(\dfrac{5\times4.00^2}{12}+6.00\times2.0^2+6.00\times2.0^2)\omega$

$183.96=54.66\omega$

$\omega=\dfrac{183.96}{54.66}$

$\omega=3.36\ rad/sec$

After collision the ball leaves with velocity

We need to calculate the velocity after collision

Using formula of the velocity

$v= r\omega$

$v=2.0\times3.36$

$v=6.72\ m/s$

We need to calculate the height

Using formula of height

$h=\dfrac{v^2}{2g}$

Put the value into the formula

$h=\dfrac{(6.72)^2}{2\times9.8}$

$h=2.304\ m$

Hence, The height of the other ball go after the collision is 2.304 m.

5 0

3 years ago

Testing Plant Growth with Fertilizer

kykrilka [37]

b) by the end of the fifth day, group b will be more than one cm taller than group a. eliminate

Explanation:

The correct prediction based on the data shown is that by the end of the fifth day, group B plants will be more than 1cm taller than group A plants.

let us examine the table closely;

Day Group A (Water Only) Plant Height (cm) Group B (Water and Fertilizer)

1 2.0 2.0

2 2.2 2.3

3 2.3 2.8

4 2.5 3.2

5 2.6 3.8

We can see that by the end of the fifth day, the height differences between the two plants, 3.8 - 2.6 = 1.2cm, this is greater than 1cm. This claim from the experiment is very correct.

Other predictions are false.

learn more:

Experiment brainly.com/question/5096428

#learnwithBrainly

5 0

3 years ago

A 200g piece of iron is heated at 100C. It is than dropped into water to bring its temperature down to 22C. What is the amount o

gizmo_the_mogwai [7]

Answer:

6926.4J

Explanation:

Given parameters:

Mass of iron = 200g

Initial temperature = 100°C

Final temperature = 22°C

Unknown:

Amount of heat transferred to the water = ?

Solution:

The quantity of heat transferred to the water is a function of mass and temperature of the iron;

H = m c Ф

m is the mass of the iron

Ф is the change in temperature

C is the specific heat capacity of iron = 0.444 J/g°C

Now;

insert the parameters and solve;

H = 200 x 0.444 x (100-22)

H = 6926.4J

8 0

3 years ago

Which of the following statements is NOT true about absorbents used to soak up different leaks and spills? A) They may be pickin

cricket20 [7]

The correct option is D.
Absorbents are products which are principally designed to soak up spills and leaks. There are different types of absorbents and they are designed to absorb different substances. The absorbents are typically equipped with specific features which make them suitable for absorbing specific substances. Thus, one can not mixed up different absorbent for use. Most absorbents are designed to soak up oil spills.

5 0

3 years ago

State the ohm's law in words​

State the ohm's law in words