PHYSICS MIDDLE SCHOOL

What is the force that opposes the movement of an object through water??

Answers

Answer 1
Answer: The force that opposes the movement of an object through water is called drag. This is a type of frictional force. This force normally depends on the density and the viscosity of the fluid in question. The liquid which has more density and more viscosity or stickiness will produce a greater amount of drag force on an object than a fluid that is less dense and less viscous in nature.  River water normally has less drag than that of sea water.  


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State the objects in the universe that reflect light from stars

Answers

Everything in the universe that is not a star reflects light from Stars. Otherwise you can't see it.

A 2-kg object is moving horizontally with the speed of 4m/s. How much net force is required to keep the object moving at this speed in this direction?

Answers

Force is only required to CHANGE speed or direction ... not to maintain it.

The net requirement is zero.
(in any direction)

What is a series circuit? (Definition)

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A series circuit is a circuit in which resistors are arranged in a chain, so the current has only one path to take. The current is the same through each resistor. The total resistance of the circuit is found by simply adding up the resistance values of the individual resistors:

True or false: The jet stream carries cold air to the tropics and warm air to the poles

Answers

False. The jet stream does not carry cold air to the tropics and warm air to the poles.

What is the jet stream at high altitude?

The jet stream is a high-altitude, fast-moving air current in the atmosphere that generally flows from west to east. It is caused by the temperature differences between the polar regions and the mid-latitudes.

In reality, the jet stream tends to separate cold polar air from warmer air in the mid-latitudes. It meanders and can have a significant impact on weather patterns, but its primary function is not to transport warm or cold air to the poles or tropics. Instead, it plays a crucial role in the development and movement of weather systems, affecting things like storm tracks and weather conditions in different regions.

Learn more about jet stream here: brainly.com/question/27868966

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Final answer:

The jet stream does not carry cold air to the tropics or warm air to the poles.

Explanation:

The statement 'The jet stream carries cold air to the tropics and warm air to the poles' is false. The jet stream is a narrow band of strong wind in the upper atmosphere that flows from west to east. It generally moves air masses from west to east across the globe, but it does not carry cold air to the tropics or warm air to the poles. Instead, it helps distribute weather systems and influences the movement of storms.

Learn more about jet stream here:

brainly.com/question/861519

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Explain how we were able to boil water at room temperature

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Answer:

put water at room temperature into a vacuum chamber and begin removing the air. Eventually, the boiling temperature will fall below the water temperature and boiling will begin without heating.

The rate at which work is done is

Answers

Answer:

Power

Explanation:

I just took the quiz
The definition for Power =   Work Done / Time taken

Hence the rate at which work is done is called Power.


Power is measured in Watts. Work done is measured in Joules and Time taken is in Seconds. 
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