How does a shorter wavelength affect the frequency of a wave?

Answers

Answer 1

Answer: The product of (wavelength) x (frequency) is always the same number ... the speed of the wave. So if one of them decreases, the other one must increase in order to keep the product the same. Shorter wavelength means higher frequency.

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Why is ammeter connected in series in an electric circuit?

Answers

In order to measure the size of the electrical current flowing in the circuit,
the current must pass through the meter.

In which state of matter is a substance unable to transfer heat by convection

Answers

Convection is the movement of molecules in a solution according to the kinetic energy imparted by heat energy. This happens in liquids, gases, and plasmas. It can't occur in solids simply because they are just that. Solids. If the solid is heated enough to break the cohesion then it will turn to a liquid. Hope this helped. :)

What are the important
Characteristics of climate?

Answers

Explanation:

temperature, humidity, atmospheric pressure, wind, and precipitation.

What is a newton equal to in terms of units of mass and acceleration?

Answers

1 newton =
the force that accelerates 1 kilogram of mass at the rate of 1meter per sec²

1 N = 1 kg-m/s²

1N= force needed to accelerate 1kg object to speed of 1m/s2

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 40. cm3. If the combustion of this mixture releases 950. J of energy, to what volume will the gases expand against a constant pressure of 650. torr if all the energy of combustion is converted into work to push back the piston

Answers

The given system is a constant pressure systemwhere the work done is the product of the pressure and the volume change.

The volume to which the gas expands to is approximately 11 liters

Reasons:

Given parameters;

The original volume, V₁ = 40 cm³

The energy released, E = 950 J

Constant pressure applied, P = 650 torr.

Condition: All energy is converted to work to push back the piston

Required:

The volume to which the gas will expand

Solution;

The work done, W = Energy releases, E = 950 J

Work done at constant pressure, W = P·(V₂ - V₁)

Where;

V₂ - The volume to which the gas will expand

Converting the volume to from cm³ to m³ gives;

V₁ = 40 cm³ = 0.00004 m³

Converting the pressure given in torr to Pascals gives;

650 torr. = 86659.54 Pa.

Therefore, we get;

950 J = 86659.54 Pa. × (V₂ - 0.00004 m³)

$V_2 = (950 \, J)/(86659.54 \, Pa) + 0.00004 \, m^3 = (2888)/(263445) \ m^3 + 0.00004 \, m^3 = (2683)/(243855) \, m^3$

Converting to liters gives;

$V_2 =(2683)/(243855) \, m^3 * (1,000 \, l )/(m^3) \approx 11.00244\, l \approx 11 \, l$

The volume to which the gas expands, V₂ ≈ 11 liters.

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Answer:

The volume needed to expand the gas is = 11 Lit = 11000 $cm^(3)$

Explanation:

Given :

Initial volume $V_(1) = 40 cm^(3) = 0.04$ Lit.

Energy $W = 950$ J = 9.38 Lit × atm. ⇒ ( 1 Lit×atm. = 101.325 J )

Pressure $P =$ 650 torr = 0.855 atm. ⇒ ( 1 torr = 0.00132 atm )

In this example we have to be aware of unit conversion system.

From the laws of thermodynamics,

$W = P \Delta V$

Here in this example, all the energy of combustion is converted into work to push back the piston

$W = P (V_(2) - V_(1) )$

$V_(2) - 0.04 = 10.96$

$V_(2) = 11$ Lit = $11000 cm^(3)$

You can find electric power lines under the ground by looking for magnetic fields at ground level. This is best explained by which of these statements?A) All wires have magnetic materials in them.
B) An electric current in a wire produces a magnetic field.
C) The power company puts magnets to help find the power lines.
D) The iron in the ground is disturbed by the power lines creating magnetic fields

Answers

Answer: B) An electric current in a wire produces a magnetic field.

All movement of electrons in a wire (current) creates a magnetic field.

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