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3 years ago

What causes the movement of electrical current in the circuit within the device shown in the diagram?

Physics

2 answers:

PSYCHO15rus [73]3 years ago

4 0

Answer:

B. Movement of electrons

Hope this helps!! may I have brainliest? :)

Marizza181 [45]3 years ago

4 0

Answer:

Movenment of electrons

Explanation:

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When you lift an object, you add the energy of lifting to the object. Tor F

PtichkaEL [24]

It's true, when we lift an object we add energy to it.

because, when we lift an object by applying force , the object attains a height and hence the energy gets stored in it, in the form gravitational potential energy .

6 0

3 years ago

you hold a metal block of mass 40 kg above your head at a height of 2 m how much work is done bu gravity if you let the block fa

zzz [600]

Answer:

784 J

Explanation:

Work is force times distance.

W = Fd

W = mgd

W = (40 kg) (9.8 m/s²) (2 m)

W = 784 J

8 0

4 years ago

A small truck has a mass of 2085 kg. How much work is required to decrease the speed of the vehicle from 22.0 m/s to 13.0 m/s on

Alisiya [41]

Answer:

Work required is 328387.5 Joules.

Explanation:

Given the following data;

Mass = 2085kg

Initial velocity, Vi = 13m/s

Final velocity, Vf =22m/s

To find the workdone;

We know that from the workdone theorem, the workdone by an object or a body is directly proportional to the kinetic energy possessed by the object due to its motion.

Mathematically, it is given by the equation;

W = Kf - Ki

Where;

W is the work required.

Kf is the final kinetic energy possessed by the object.

Ki is the initial kinetic energy possessed by the object.

But Kinetic energy = ½MV²

W = ½MVf² - ½MVi²

Substituting into the equation, we have;

W = ½(2085)*22² - ½(2085)*13²

Simplifying the equation, we have;

W = 1042.5 * 484 - 1042.5 * 169

W = 504570 - 176182.5

W = 328387.5J

Therefore, the work required to decrease the speed of the vehicle is 328387.5 Joules.

8 0

3 years ago

Auroras occur at _____ of a planet. the equator the north magnetic pole only the south magnetic pole only both magnetic poles

goldenfox [79]

The answer is - both magnetic poles

In the earth's southern magnetic pole, auroras are known as aurora austalis or southern lights while in the northern magnetic pole they are known as aurora borealis or northern lights.

They are caused by charged particles borne in solar winds that are escaping from the sun. As they approach the earth, the winds distort the earth's magnetic field which allows some particles to enter the earth's atmosphere, where they excite the gases and make them glow with spectacular display of colors.

3 0

4 years ago

Can someone please tell me the answer

Anna35 [415]

So here the red ball is initially stationary so V2=0m/s. Plus for the sake of rules the mass must be converted into kg. Initial momentum would equal the final momentum. Make an equation out of it and get the answer.

8 0

4 years ago