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3 years ago

What is a molecule?

Physics

2 answers:

saveliy_v [14]3 years ago

7 0

Answer:

A molecule is defined as two or more atom of same element or different element grouped together

ankoles [38]3 years ago

4 0

Simple definition: A molecule is a group of two or more atoms chemically bonded together.

I hope this helped a little bit :)

You might be interested in

True or False If the mass of the object increases, then the potential energy of the object decreases.

Tamiku [17]

False- the potential energy is force*distance and force is mass*acceleration so if there’s more mass, there’s more force, so there’s more potential energy
Hope that helps :)

5 0

3 years ago

Which of the following is a FALSE statement about acceleration? A. Acceleration can be zero, positive, or negative. B. An object

Anni [7]

Answer:

D. Acceleration is always in the same direction as velocity.

Explanation:

First of all, let's remind the definition of acceleration:

Acceleration is equal to the rate of change in velocity, in formula

$a=\frac{\Delta v}{\Delta t}$

where $\Delta v$ is the change in velocity and $\Delta t$ is the time interval.

It is important to keep in mind that acceleration is a vector, so it has a direction.

Now let's analyze each statement:

A. Acceleration can be zero, positive, or negative. --> TRUE. When acceleration is positive, it means that its direction is the same as the velocity, so the object is speeding up; when acceleration is negative, it means that its direction is opposite to the velocity, so the object is slowing down; when acceleration is zero, the object has constant velocity.

B. An object can have acceleration with zero velocity. --> TRUE. In fact, an object can be moving with a positive velocity and having a constant negative acceleration: this means that its velocity will decreases until it becomes zero and then it turns negative. At the moment the velocity is zero, the acceleration is not zero.

C. An object can have acceleration with negative velocity. --> TRUE. The direction of the acceleration does not depend on the direction of the velocity: an object with negative velocity is moving in the direction opposite to that used as reference, so it can still have an acceleration.

D. Acceleration is always in the same direction as velocity. --> FALSE. As we we said in point a and c, the direction of the acceleration does not depend on the direction of the velocity, so an object with positive velocity, for example, can have a negative acceleration (it means that the acceleration is in the opposite direction, so the object is slowing down).

5 0

3 years ago

Mirage is due to...

Irina18 [472]

<span>Mirage is due to (A). unequal heating of different parts of the atmosphere,
because that produces unequal density of different parts of the atmosphere,
which bends the light.
</span>

3 0

4 years ago

An automobile light has a 1.0-a current when it is connected to a 12-v battery. determine the resistance of the light.

Elis [28]

<span>Resistance of automobile light is equal to 12 ohms.
</span>Resistance = Voltage / Current
where
Voltage = 12 volts
Current = 1.0 Amperes
Resistance = 12 volts/ 1.0 amperes
Resistance = 12 ohms.
Automobile light has 12 ohms resistance when it is connected to 12volts battery with 1.0 ampere current.

3 0

3 years ago

Which one is correct:

alisha [4.7K]

Answer:

Option (c) is correct.

Explanation:

Acceleration of an object is given by the formula as follows :

$a=\dfrac{v-u}{t}$

Where

u and v are initial and final velocity

t is time

(v-u) is also called the change in velocity

So, the acceleration of an object is equal to the rate of change of velocity. Hence, the correct option is (c) " Change in its velocity divided by the change in time".

3 0

3 years ago