All categories

3 years ago

An electrical connection between an electrical circuit or equipment and the earth is called a

1 answer:

3 0

I'd say ground. <span>Voltage in the US is 110-120 volts while in other countries it is 220-240 volts. if you have a 110-120 volt appliance, you need a step-up transformer (110 to 220)before you could use it in a 220 volt power supply.</span>

You might be interested in

15 if an object gains_ it has an electrical charge

Papessa [141]

Answer:

15. electrons

16. electrometer

18. Transformers

24. Power

Explanation:

The fundamental charges in nature are electrons and protons.
The electrons have negative charges and protons have positive charges.
The proton with similar other protons forms the nucleus of an atom. Mostly it doesn't exist freely in nature. it is not easy to knock out a proton from an atom.
Whereas, the electrons were present in the outer sphere if the nucleus of an atom.Compared to a proton, It is easy to remove an electron from an atom.
So, if an object gains some electrons, it acquires some charges.
The amount of such charges can be measured using a device called electrometer.
The flow of electrons is associated with energy. This energy is called electrical energy and it can be converted into other forms of energy.
The rate at which electrical energy is converted to some other forms of energy is called electrical power.

4 0

4 years ago

(1 point) A projectile is fired from ground level with an initial speed of 600 m/sec and an angle of elevation of 30 degrees. Us

konstantin123 [22]

Answer:

(a) The range of the projectile is 31,813.18 m

(b) The maximum height of the projectile is 4,591.84 m

Explanation:

Given;

initial speed of the projectile, u = 600 m/s

angle of projection, θ = 30⁰

acceleration due to gravity, g = 9.8 m/s²

(a) The range of the projectile in meters;

$R = \frac{u^2sin \ 2\theta}{g} \\\\R = \frac{600^2 sin(2\times 30^0)}{9.8} \\\\R = \frac{600^2 sin (60^0)}{9.8} \\\\R = 31,813.18 \ m$

(b) The maximum height of the projectile in meters;

$H = \frac{u^2 sin^2\theta}{2g} \\\\H = \frac{600^2 (sin \ 30)^2}{2\times 9.8} \\\\H = \frac{600^2 (0.5)^2}{19.6} \\\\H = 4,591.84 \ m$

$v^2 = u^2 + 2gh\\\\v^2 = 600^2 + (2 \times 9.8)(4,591.84)\\\\v^2 = 360,000 + 90,000.064\\\\v = \sqrt{450,000.064} \\\\v = 670.82 \ m/s$

5 0

3 years ago

Explain the flow of energy in the food chain and why stored energy is an important part of it.

sdas [7]

The energy flow in the ecosystem is important to maintain an ecological balance. The producers synthesis food by the process of photosynthesis. A part of the energy is stored within the plants. The remaining energy is utilized by the plants in their growth and development.

5 0

2 years ago

Read 2 more answers

Which of the following is an example of a healthy behavior?

Greeley [361]

Answer moderate alcohol can be good for you health

Explanation: but I wouldn't do none of those things to be honest

SMARTEST

7 0

3 years ago

Psychologists study animals because

poizon [28]

Psychologists study animals because they want to understand how different species think and behave, animal psychology is often simpler and easier to understand than human physiology, and it is more permissible to conduct certain types of research with animals than with humans

7 0

4 years ago

Read 2 more answers