Physics, 24.03.2020 07:55 copelandgarret9972

A group of students are conducting an investigation about charging through the process of friction. The students rub two neutral materials together, and there is a transfer of electrical charge from one material to the other. What is the net electrical charge of the objects together? and Which of the following interaction between two charges will lead to an ATTRACTIVE Fele?

Answers: 3

Show answers

Answers

Answer from: raynaesquivel

Attractive force; net total charge is zero

Explanation:

Charging through friction is one of the three methods of charging an object (the other two methods are charging by conduction and by induction).

In charging by friction, one object is rubbed against another object; one of the two objects has more tendency to acquire electrons than the other one, so it attracts electrons from the the first object.

As a result, at the end of the process, one object will have an excess of electrons (negative charge) while the other object will have a lack of electrons (so, net positive charge).

The direction of the electrostatic force between two charged objects is as follows:

- The force is attractive if the two objects have opposite charges (+- or -+)

- The force is repulsive if the two objects have same sign charge (++ or --)

Therefore in this case, since the two objects are left with opposite charge, they will attract each other.

Moreover, the law of conservation of charge tells us that the negative charge has been transferred from an object to the other, however, there is no exchange of charge between the two objects and the surrounding; therefore, the total net charge of the two objects will remain the same as the beginning, therefore zero.

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

Answer from: Quest

pecialized keyboards

Another question on Physics

Physics, 22.06.2019 16:30

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

Answers: 1

Answer

Physics, 22.06.2019 17:00

The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.

Answers: 1

Answer

Physics, 22.06.2019 17:40

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.

Answers: 3

Answer

Physics, 22.06.2019 21:00

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this

Answers: 2

Answer

You know the right answer?

A group of students are conducting an investigation about charging through the process of friction....

Questions