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3 years ago

What is electricity?

2 answers:

5 0

Answer:Electricity is the flow of electrons. All matter is made up of atoms, and an atom has a center, called a nucleus. When electrons are "lost" from an atom, the free movement of these electrons constitutes an electric current. Electricity is a basic part of nature and it is one of our most widely used forms of energy.

Explanation:

alexira [117]3 years ago

5 0

Answer:

Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge.

Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others.

a form of energy resulting from the existence of charged particles (such as electrons or protons), either statically as an accumulation of charge or dynamically as a current.

Explanation:

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How much work is done on a 10 N block that is lifted 5 meters off the ground by a pulley?

Anestetic [448]

Work = (Force) * (Displacement). Force = 10 newtons Distance or Displacement 5 meters. Therefore,the Work done = (10 newtons * 5 meters) = 50 joules. The Answer is 50 Joules of Force

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4 years ago

What can the vacuole hold? (check all that apply) <br> A) water<br> B) waste<br> C) nutrients (food)

Verizon [17]

Answer:

C & A 100000%

Explanation:

i took this test before and i just made sure on safari . Its food (nutrients) and water

7 0

3 years ago

2. A police car drives from a police station to a distance of 170 km in 4 hours. He then stops at a gas station for 1 hour to fi

Reil [10]

Answer:

a.42.5 km/h or .71 km/m

b. 66.7 km/h or 1.1repeating km/m

c.41.5 km/h or .69 km/m

Explanation:

These are all average speed problems, meaning you divide the distance traveled by the time $s=\frac{d}{t}$

A. 170km/4hrs or 170km/240 mins

B. 100km/1.5hrs or 100km/90mins

C. The only tricky thing here is the question seems like it wants the speed for all of the information given, so you do include the one hour that he stops

270km/6.5 hrs or 270km/390 mins

5 0

3 years ago

Carter found the rock shown in the picture below near a river

noname [10]

Answer:

there's no picture

Explanation:

and what would the question be anyways?

4 0

3 years ago

Read 2 more answers

A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling west at 20.0 m/s. The cars stick together. What is

andriy [413]

Answer:

17.27m/s

Explanation:

M1U1 + M2U2 = (M1+M2)V

(900x15) + (750 x 20) = (900+750)V

13500+15000 = (1650)V

28500 = 1650v

V = 28500/1650 = 17.27m/s

V = 17.27m/s

5 0

3 years ago