All categories

3 years ago

Is electricity matter or energy

Physics

2 answers:

MariettaO [177]3 years ago

7 0

Energy, because matter is an object with mass. hope this helped :)

SVEN [57.7K]3 years ago

4 0

Electricity is a form of energy because it does not have mass.

You might be interested in

With regard to the pH scale, a solution with a pH

Montano1993 [528]

Close to 14 is considered a strong base.

6 0

3 years ago

A loaded 500 kg sled is traveling on smooth horizontal snow at 5 m/s when it suddenly comes to a rough region. The region is 10

sergejj [24]

Answer:

400 N

Explanation:

Change of Kinetic Energy to Friction Wok

∆KE = W

½ x m x (v(5)² - v(3)²) = f x d

½ x 500 x (5² - 3²) = f x 10

250 x (25 - 9) = f x 10

25 x 16 = f

f = 400 N

6 0

3 years ago

5. A student travels 11 m north and then turns around to travel 25 m south. If the total time of travel is 12 sec., find a) The

11111nata11111 [884]

Explanation:

Given that,

A student travels 11 m north and then turns around to travel 25 m south.

Total time, t = 12 s

The total distance or the total path covered by the student is equal to 11 m + 25 m = 36 m

Displacement of the student or the shortest path covered is d = 25-11 = 14 m

(a) The student's average speed = total distance/total time

$s=\dfrac{36\ m}{12\ s}\\\\s=3\ m/s$

(b) The student's average velocity = total displacement/total time

$v=\dfrac{14\ m}{12\ s}\\\\v=1.17\ m/s$

4 0

3 years ago

2. A uniform wire of resistance R is stretched until its length doubles. Assuming its density and resistivity remain constant, w

never [62]

Answer:

Resistance is quadrupled.

Explanation:

Solving this requires us to use the formula of resistivity.

Resistivity is usually said to be the measure of the resistance of a particular size of any given material to the electrical conduction. It is mathematically represented as

ρ = RA/L, where

ρ = the resistivity of the given material

R = the resistance of the material

A = the area of the material

L = length of the material.

From the question, we're told that the length is doubled with the resistivity and density remaining constant. If the density is constant, this makes the volume constant as well.

Volume, V = A * L. We're then told that the length is doubled. If the length is doubled, for the volume to remain constant, then the area must be halved.

Volume, V = A/2 * 2L

Making, Resistance R, subject of the formula, we have

R = ρL/A.

Since resistivity is constant and the area is halved, we then have

R = 2L / (1/2A)

R = 4L / A

If the length is doubled, we have the resistance to be quadrupled

3 0

3 years ago

A racing car whose mass is 1.2 X 10^3 kg is travelling at 8.9 m/s. It stops with a constant deceleration in a distance of 1.8X10

Alexeev081 [22]

given that initial speed of the car is