What form of energy does a block of chocolate have?

According to the law of conservation of momentum, the ____________________ amount of momentum of a group of objects does not cha

erica [24]

According to the law of conservation of momentum, the TOTAL amount of momentum of a group of objects does not change unless outside _____FORCES____ act on the objects.

8 0

3 years ago

A point charge of -0.70 μC is fixed to one corner of a square. An identical charge is fixed to the diagonally opposite corner. A

MakcuM [25]

Answer:

The magnitude and algebraic sign of q is $14\sqrt{2}\ \mu C$

Explanation:

Given that,

Point charge = -0.70 μC[/tex]

We need to calculate the force for all charges

The electric force at first corner

$F_{1}=\dfrac{-k0.70\times10^{-6}q}{r^2}$

The electric force at opposite corner

$F_{3}=\dfrac{-k0.70\times10^{-6}q}{r^2}$

The net force is

$F=\sqrt{F_{1}^2+F_{2}^2}$

Put the value into the formula

$F=\sqrt{(\dfrac{-k0.70\times10^{-6}q}{r^2})^2+(\dfrac{-k0.70\times10^{-6}q}{r^2})^2}$

The electric force at second corner

$F_{2}=\dfrac{-kq^2}{2r^2}$

The net force acting on either of the charges is zero.

So, $F=F'$

$\sqrt{(\dfrac{k0.70\times10^{-6}q}{r^2})^2+(\dfrac{-k0.70\times10^{-6}q}{r^2})^2}=\dfrac{kq^2}{2r^2}$

$\sqrt{2}\times\dfrac{0.70\times10^{-6}kq}{r^2}=\dfrac{kq^2}{2r^2}$

$q=14\sqrt{2}\ \mu C$

Hence, The magnitude and algebraic sign of q is $14\sqrt{2}\ \mu C$

8 0

3 years ago

Introduction to forces

ELEN [110]

Answer: Force

A push, pull or twist that can change an object's position, direction, speed or shape.

Explanation:

8 0

2 years ago

I Need help asappp!!!

katovenus [111]

Answer: Inertia

Explanation: If it is multiple choice chose acceleration and inertia

4 0

3 years ago

Write any three importance of Measurement.

NISA [10]

Explanation:

The three importance of measurement are as follows :-

measurement is used to compare the items when barter system takes place .
measurement helps in weighing the foods , groceries etc .
Measurement are important in laboratory when there experiments is being taken for different purposes .

Hope it is helpful to you

✌️✌️✌️✌️✌️✌️✌️

3 0

3 years ago