Does gas have as definite or indefinite volume

Answers

Answer 1

Answer: gases have an indefinite volume .

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If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is A. 40 degrees.B. 0 degrees.C. 90 degrees.D. 80 degrees.
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A stone with a mass of 0.70 kg is attached to one end of a string 0.80 m long. The string will break if its tension exceeds 65.0 N. The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed. Find the maximum speed the stone can attain without breaking the string.

The connections of many simple pieces in the brain is evidence of the:O A. lobes of the brain
B. brain's complexity
C. function of neurons
D. cerebral cortex

Answers

B. Brains Conplexity

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Answer:

B. brain's complexity

Explanation:

Ape.x

The source of the sun's heat is A. nuclear fission.
B. nuclear disintegration.
C. nuclear fusion.
D. nuclear separation.

Answers

The core of the sun is so hot and there is so much pressure, nuclear fusion takes place:hydrogen is changed to helium. Nuclear fusion creates heat and photons (light). The sun's surface is about 6,000 Kelvin, which is 10,340 degrees Fahrenheit (5,726 degrees Celsius).

Answer:

C. nuclear fusion.

Explanation:

The core of the sun is so hot and there is so much pressure, nuclear fusion takes place: hydrogen is changed to helium. Nuclear fusion creates heat and photons (light). The sun's surface is about 6,000 Kelvin, which is 10,340 degrees Fahrenheit (5,726 degrees Celsius).

Explain why the current is reduced as electrons move through a conductor.

Answers

The current is reduced as less energy is available to move electrons through the wire.

This is because electrons moving through the conducting substance collide with the electrons and ions.

This causes collisions which further more convert kinetic energy into thermal energy because of the fewer energy that is available, it reduces.

Moreover the resistivity factor of the conductor it self might play some role and the loss of energy too.

as current moves through the conductor; the resistance of the conductor causes the original amount of current to reduce do to the length and the cross section size of the wire.

A pole that is 2.9m tall casts a shadow that is 1.32m long. at the same time, a nearby tower casts a shadow that is 37.75m long. how tall is the tower? round your answer to the nearest meter.

Answers

$(2.9)/(1.32)$ = $(x)/(37.75)$

x = 82.93 m

Nothing to deal with physics.
Maths. Scale factor. Year 9.

The air you breathe is made of 21% oxygen and 78% nitrogen. The oxygen in air is the _____ and the nitrogen is the _____. solution, solute solute, solvent solvent, solution

Answers

solute, solvent.

Solute is what is dissolved in the solvent. Since there is less oxygen and more nitrogen, the oxygen is the solute and the nitrogen the solvent. Solution is not included in the answer because the air is the solution (the combination of the solutes and solvent).

None of the choices is correct.
Air is a mixture, NOT a solution.
There are no solvents or solutes in a mixture.

Amendments to the Constitution can be proposed bythe president and vice president.Congress and state legislatures.the president and the Supreme Court.Congress and the Supreme Court.

Answers

Amendments to the Constitution can be proposed by the Congress and state legislatures. As written in Article V of the Constitution, the authority to amend the constitution lies with a two thirds majority vote in the House of Representatives and Senate or by a constitutional convention called by two thirds of the state legislatures.

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