Physics, 26.12.2021 04:20 frankiesoar68

F. Protons and neutrons 2. TRUE or FALSE: An object that is positively charged contains all protons and no electrons
3. TRUE or FALSE: An object that is negatively charged could contain only electrons with me
accompanying protons
4. TRUE or FALSE: An object that is electrically neutral contains only neutrons.

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Answer from: kiera2599

2. False :

An object that is positively charged has a greater positive charge and a lower negative charge.

3. Will be This :

Q.→ TRUE or FALSE: An object that is negatively charged could contain only electrons with no accompanying protons.

Answer → False :

Negatively charged objects have protons; it's just their number of electrons is greater than their number of protons.

4. False :

An object that is electrically neutral contains neutrons and the same number of unlike charges, i.e., electrons and protons.

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

+15-35=-20

going in opposite directions

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F. Protons and neutrons 2. TRUE or FALSE: An object that is positively charged contains all proton...

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