All categories

3 years ago

To get an electrical current you have to have a _ __.

Physics

2 answers:

Alexandra [31]3 years ago

7 0

Answer :

curcuit and Source of current .

stepan [7]3 years ago

5 0

Answer: you have to have a source of electricity because if not you are not gonna get a "eletrical" current

You might be interested in

A 1.0-kilogram rubber ball traveling east at 4.0 meters per second hits a wall and bounces back toward the west at 2.0 meters pe

Mrrafil [7]

Answer:

8 J and 2 J

Explanation:

Given that,

Mass of the rubber ball, m = 1 kg

Initial speed of the rubber ball, u = 4 m/s (in east)

Final speed of the rubber ball, v = -2 m/s (in west)

We need to find the kinetic energy of the ball before it hits the wall, the kinetic energy of the ball after it bounces off the wall.

Initial kinetic energy,

$K_i=\dfrac{1}{2}mv^2\\\\K_i=\dfrac{1}{2}\times 1\times (4)^2\\\\K_i=8\ J$

Final kinetic energy,

$K_f=\dfrac{1}{2}mv^2\\\\K_f=\dfrac{1}{2}\times 1\times (2)^2\\\\K_f=2\ J$

So, the initial kinetic energy is 8 J and the final kinetic energy is 2 J.

8 0

3 years ago

A. while to rest coming down from a slide you stop and come

Pani-rosa [81]

Ok ok ok ok ok ok I ok ok I I’m only on kn knkkkm I’m on

3 0

3 years ago

Plzzzzzzzzz help me will mark u brainest

Andrew [12]

Answer:

Explanation:

acceleration = change in speed / change in time

for 1, speed increases over time, so positive acceleration

for 3, speed decreases over time, so negative acceleration (or deceleration)

5 0

3 years ago

Read 2 more answers

The number of revolutions of two pulleys is inversely proportional to their diameters. If a 24-inch diameter pulley making 400 r

Fed [463]

Answer:

C) 1200 rpm

Explanation:

$D_1$ = Diameter of bigger pulley = 24 inch

$D_2$ = Diameter of smaller pulley = 8 inch

$N_1$ = Speed of bigger pulley = 400 rpm

$N_2$ = Speed of smaller pulley

The relation between revolutions per minute and diameter is that they are inversely proportional.

$\frac{N_1}{N_2}=\frac{D_2}{D_1}\\\Rightarrow \frac{400}{N_2}=\frac{8}{24}\\\Rightarrow N_2=\frac{24\times 400}{8}\\\Rightarrow N_2=1200\ rpm$

The number of revolutions per minute of the smaller pulley is 1200 rpm

7 0

3 years ago

What is the kinetic energy of a 4 kg toy car moving at 5 m/s?

Mamont248 [21]

Answer:

50 J

Explanation:

4 0

3 years ago

To get an electrical current you have to have a ___ ____.

To get an electrical current you have to have a _ __.