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3 years ago

Explain an open, closed, and isolated system.

2 answers:

Crank3 years ago

8 0

Open system - system in which mass or energy can be lost to or gained from the environment.

closed system - system that does not exchange any matter with its surroundings and is not subject to an external force

isolated system - it can be:
A. a physical system that is so far removed from other systems that it does not interact with them. or
B. a thermodynamic system that is enclosed by rigid immovable walls through which neither matter nor energy can pass through.

hope this helps :)

Natasha2012 [34]3 years ago

5 0

An open system is a system that has external interactions.
a closed system is a physical system that does not allow certain types of transfers in our out of the system.
an isolated system obeys the conservation law that its total energy- mass stays constant.

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A 0.49-kg cord is stretched between two supports,7.3m apart. When one support is struck by a hammer, a transverse wave travels d

Wewaii [24]

Answer:

T= 5.18N

Explanation:

u = mass of chord / length of chord

u = 0.49/ 7.3

u = 0.067 kg/m

Velocity of sound waves (v) =length of chord / time taken for wave to travel

v = 7.3 / 0.83 = 8.795m/s

Tension is calculated below using the formula

T = v² * u

T = (8.795)² x 0.067

T= 5.18N

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3 years ago

The radius of Saturn is about 10 times the radius of Venus and the mass is about 100 times that of Venus. How much larger is the

lora16 [44]

let the mass of Venus is M then mass of Saturn is 100 M

similarly if the radius of Venus is R then the radius of Saturn is 10 R

now the force of gravity on a man of mass "m" at the surface of Venus is given by

$F_1 = \frac{GMm}{R^2}$

now similarly the gravitational force on the man if he is at the surface of Saturn

$F_2 = \frac{G*100M*m}{(10R)^2}$

$F_2 = \frac{GMm}{R^2}$

so here if we divide the two forces

$\frac{F_1}{F_2} = 1$

so here we can say

F1 = F2

so on both planets the gravitational force will be same

7 0

2 years ago

Diferencie energia cinética de energia potencial gravitacional.

Vikentia [17]

Answer:

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The atoms and molecules in it are in constant motion. The kinetic energy of such a body is the measure of its temperature. Potential energy is classified depending on the applicable restoring force. Gravitational potential energy – potential energy of an object which is associated with gravitational force

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3 years ago

Average velocity is different than average speed because calculating average velocity involves ?

Studentka2010 [4]

Direction!

Velocity is a vector quantity and speed is a scalar quantity. Vector quantities includes both magnitude and direction, while scalar quantities only have magnitude. :)

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2 years ago

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Current explanation of where electrons might be found in the atom

Paul [167]

Answer:

Outer Shell

Explanation:

an electron of an atom, located in the outermost shell (valence shell) of the atom, that can be transferred to or shared with another atom. An electron in one of the outer shells of an atom that can participate in forming chemical bonds with other atoms. read more

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3 years ago