Which of the following is a closed system or very close to a closed system? A. a block of iron sealed in a vacuum chamber B. a dish of ice cream sitting in the sunlight C. a stick of dynamite during an explosion D. a stalled car in a snowstorm

Answers

Answer 1

Answer: The right answer for the question that is being asked and shown above is that: "C. a stick of dynamite during an explosion" the system that is a closed system or very close to a closed system is that C. a stick of dynamite during an explosion

Related Questions

In what direction does an applied force move an object? A.in the same direction as the forceB.independent of the forceC.in the opposite direction of the forceD.perpendicular to the force
Which medium caused the most bending of light as it passed through?
The for objects to ____changes in their motion is called
Pressure __________ with depth to support the fluid weight above.a.decreasesc.stays the sameb.increasesd.not enough information to answer
99pts. I can't find isotope, pottasium-15 or k-15. Is this even possible, I have a fill-in-the-blanks worksheet with a table like example:Element Name: Nitrogen-20 Symbol: N-20 Atomic Number: 7 Atomic Mass: 20 Charge: 0 Protons: 7 Neutrons: 13 Electrons: 7I remember finding the isotope number, Nitrogen-20 by adding the Protons and Neutrons, then I get a new atomic mass. But on here Pottasium-15 is confusing! What neutrons do I add from 19 protons to get 15? Sometimes the teacher throws in impossible problems.

Energy stored in the nucleus of an atom is called

Answers

nuclear energy because it holds atoms together.

Atomic Energy or Nuclear Energy

Boyle’s Law: When____ is held constant, the pressure and volume of a gas are___ proportional.It didnt give me a word bank
No link answers please

Answers

Boyle’s Law states that, when temperature is held constant, the pressure and volume of a gas are inversely proportional.

What is meant by gas laws ?

Gas laws are defined as the laws that govern the properties of gases by determining the relationships between the pressure, volume and temperature of the gases.

Here,

Boyle's law is the gas law that governs the relationship between the pressure and volume of gases.

Boyle's law states that, for an ideal gas at a unit mass, the pressure of the gas is inversely proportional to the volume of the gas, at constant temperature.

P $\alpha$ 1/V

PV = a constant

When the temperature of the gas is held constant.

Hence,

Boyle’s Law states that, when temperature is held constant, the pressure and volume of a gas are inversely proportional.

To learn more about gas laws, click:

brainly.com/question/24106768

#SPJ3

Answer:

When temperature is held constant, the pressure and volume of a gas are not proportional.

Explanation:

That is Boyle's Law

A police cruiser is travelling at 24 m/s and slows down at a rate of 0.65 m/s2 until it stops. The distance traveled by the cop while slowing down is closest to:A.0.44 km.
B.0.38 km.
C.0.42 km.
D.0.36 km.
E.4.0 km.

Answers

You divide 0.65 by 24 and you get the answer. You can use a calculator for this. The equation is 24/0.65=. Also with these types of problems if your stuck get rid of the answers that don't make sense.

You divide 0.65 by 24 and you get the answer

Hi, I am Nathan, I have a question if you answer correctly I give you more points. what works all the time but never sleeps. that is the question

Answers

Answer: The answer to the question "what works all the time but never sleeps" can vary depending on the context or interpretation. Here are a few possible answers:

Explanation:

1. A machine or technology: Machines such as computers, servers, or automated systems can work continuously without needing sleep. They can perform tasks, process information, or operate machinery 24/7.

2. The human brain: While humans do need sleep for rest and rejuvenation, the brain never stops working. Even during sleep, the brain continues to regulate bodily functions, process information, and even dream.

3. Nature: The natural world is constantly active and functioning. For example, plants continue to photosynthesize, animals continue to move and hunt, and ecosystems continue to interact and evolve, even during the night.

4. Time: Time is always progressing and never stops. The concept of time keeps working, and events and processes occur continuously, regardless of day or night.

These are just a few possible answers. The correct response may depend on the specific context or intended interpretation of the question.

Answer: A man

Explanation:

A man works all day and never gets the chance to sleep.

An 100W light bulb is on 6 hours work out the energy (kWh) used and the cost of it (1kWh = £0.1359) with working out please

Answers

1,000 W = 1 kW
100 W = 0.1 kW

(0.1 kW) x (6 h) = 0.6 kWh <=== energy

(0.6 kWh) x (£0.1359/kWh) = £0.0815 <=== cost of it

Two spheres exert a gravitational attraction on each other. Which of the following changes to this system would reduce the gravitational attraction by one half?

Answers

- Decreasing one of the masses to 1/2 of its original value

- Increasing the distance by a factor of $√(2)$

Explanation:

There are no options provided, however we can still answer the question.

In fact, the magnitude of the gravitational force between two objects is given by the equation:

$F=G(m_1 m_2)/(r^2)$

where

$G=6.67\cdot 10^(-11) m^3 kg^(-1)s^(-2)$ is the gravitational constant

m1, m2 are the masses of the two objects

r is the separation between them

We notice that:

The gravitational force is proportional to the product between the masses
The gravitational force is inversely proportional to the square of the distance between the masses

Therefore, in order to reduce the gravitational attraction by one half, we can do one of the following changes:

- Decreasing one of the masses to 1/2 of its original value: for example, if $m_1'=(1)/(2)m_1$ , the gravitational force becomes