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3 years ago

What is the definition for the term density

Physics

2 answers:

Pie3 years ago

8 0

Explanation:

Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.

horrorfan [7]3 years ago

6 0

Density can be defined as the measure of mass of a substance per unit volume.

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which organelle in the plant cell would mainly help the cell tack in water or get rid of water just like the potato did? this is

Inessa [10]

cell membrane;cellular respiration

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4 years ago

If a seagull drops a shell from rest at a height of 12 m how fast is the shell moving when it hits the rocks

Dvinal [7]

As seagull drops a shell from rest at a height of 12 m, so we use kinematic equation of motion,

$v^{2} = u^{2} +2g h$

Here, h is the height, u is initial velocity , v is final velocity and g is acceleration due to gravity.

Given, h = 12 m.

We take, $g = 9.8 \ m/s^2$ and $u = 0$ because seagull drops a shell from rest.

Therefore, the speed of shell when it hits the rocks,

$v^{2} = 0 + 2 \times 9.8 m/s^2 \times 12 \ m = 235.2 (m/s)^2 \\\\ v = \sqrt{235.2 (m/s)^2} = 15.33 \ m/s^2$

5 0

3 years ago

According to newtons third law of motion action nd reaction forces are equal in magnitudes nd opposite in direction but they do

snow_lady [41]

Because the action and the reaction forces act on different objects

Explanation:

Newton's third law of motion states that:

<em>"When an object A exerts a force on an object B (action), then object B exerts an equal and opposite force (reaction) on object A"</em>

From the statement above, we clearly see that the two forces mentioned in the law act on different objects. In fact, the action is exerted on object B, while the reaction is exerted on object A.

When we are considering the free-body diagram of an object, we just represent all the forces acting on that object, but not the forces exerted on other objects: this means that the action and the reaction never appear in the same free-body diagram of the same object, so they do not cancel out, simply because they are applied to different objects.

Learn more about Newton's third law:

brainly.com/question/11411375

#LearnwithBrainly

6 0

3 years ago

Boy A and Boy B are pulling on a rope. If the rope is not moving toward either boy, identify two balanced forces involving the r

natima [27]

Answer:

Hey

The rope isn't moving because each boy is pulling with the same force on opposite ends. That being said the bot pulling force is balanced.

Inside the rope are molecules connecting the whole thing together. The force they exert on each other must be equal because they aren't moving but are still exerting forces

7 0

3 years ago

A 4.00 µf capacitor is connected to a 12.0 v battery.

atroni [7]

(a) The capacitance of the capacitor is:
$C=4 \mu F=4 \cdot 10^{-6}F$
and the voltage applied across its plates is
$V=12.0 V$

The relationship between the charge Q on each plate of the capacitor, the capacitance and the voltage is:
$C= \frac{Q}{V}$
and re-arranging it we find the charge stored in the capacitor:
$Q=CV=(4 \cdot 10^{-6} F)(12.0 V)=4.8 \cdot 10^{-5} C$

(b) The electrical potential energy stored in a capacitor is given by
$U= \frac{1}{2}CV^2$
where C is the capacitance and V is the voltage. The new voltage is
$V=1.50 V$
so the energy stored in the capacitor is
$U= \frac{1}{2}(4 \cdot 10^{-6} F)(1.50 V)^2=4.5 \cdot 10^{-6} J$

3 0

3 years ago

Read 2 more answers