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3 years ago

What is the meaning of overall charge.

1 answer:

8 0

Suppose you have a box that is a cubic meter. It is made of copper. It is solid. It has 1000000 extra electrons. It has an overall charge of 1000000 electrons that are spread all over it's volume.

It means the excess or deficiency of the number of electrons on a body capable taking on or giving up electrons. When the electrons are taken on or given up, there is no chemical change.

I usually try and answer this kind of question by an example because I don't think the definition is always clear on it's own.

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Which statement describes one feature of a closed circuit? Charges do not flow. Bulbs will not shine. The circuit is broken. The

Novay_Z [31]

I inferred you've referring to a close electrical circuit.

Answer:

The circuit is complete.

Explanation:

A closed electrical circuit is indeed a complete circuit. Also, it allows charges to flow, the bulbs in the circuit will shine and it is not broken.

It is termed closed circuit because there is no brokage in the series of electrical wires or the switch; which may prevent the free flow of current or charges. Thus, a feature that marks closed circuits is that they are complete.

7 0

3 years ago

Read 2 more answers

According to the article, why might acting happy actually make one happy?

nasty-shy [4]

Answer:

Acting happy can act as a stimuli to making yourself happy and release the happy chemicals.

Explanation:

100 on e2020

6 0

3 years ago

How much work is done by the force lifting a 0.1-kilogram hamburger vertically upward at a constant velocity 0.3 meter from a ta

pychu [463]

Answer:

0.2943 Nm

Explanation:

Work done is given a the product of force and diatance moved and expressed by the formula

W=Fd

Here W represent work, F is applied force and d is perpendicular distance

Also, we know that F=mg where m is the mass of an object and g is acceleration due to gravity. Substituting this back into the initial equation then

W=mgd

Taking acceleration due to gravity as 9.81 m/s2 and substituting mass with 0.1 kg and distance with 0.3 m then

W=0.1*9.81*0.3=0.2943 Nm

5 0

3 years ago

Explain the energy changes involved when a positive charge moves because of a nearby, negatively charged object. use the terms e

leva [86]

The energy changes involved when a positive charge moves because of a nearby, negatively charged object because that is actually similar to when an object falls in a gravitational field, the potential energy of the object will turn in to a kinetic energy. thank you for this question.

3 0

3 years ago

Read 2 more answers

From the gravitational law calculate the weight W (gravitational force with respect to the earth) of a 89-kg man in a spacecraft

zhannawk [14.2K]

Answer:

$W=\frac{773}{4.45}=173.76 l b f$

Explanation:

$W=\frac{G \cdot m_{e} \cdot m}{(R+h)^{2}}$

The law of gravitation

$G=6.673\left(10^{-11}\right) m^{3} /\left(k g \cdot s^{2}\right)$

Universal gravitational constant [S.I. units]

$m_{e}=5.976\left(10^{24}\right) k g$

Mass of Earth [S.I. units]

$m=89 kg$

Mass of a man in a spacecraft [S.I. units]

$R=6371 \mathrm{~km}$

Earth radius [km]

Distance between man and the earth's surface

$h=261 \mathrm{~km} \quad[\mathrm{~km}]$

ESULT $W=\frac{6.673\left(10^{-11}\right) \cdot 5.976\left(10^{24}\right) \cdot 89}{\left(6371 \cdot 10^{3}+261 \cdot 10^{3}\right)^{2}}=773.22 \mathrm{~N}$

$W=\frac{773}{4.45}=173.76 l b f$

4 0

3 years ago