How to find wavelength

Answers

Answer 1

Answer: Know the formula for calculating wavelength. To find the wavelength of a wave, you just have to divide the wave's speed by its frequency. ...State the formula in correct units. ...Plug the known quantities in the equation. ...Solve.

Answer 2

Answer:

Answer:

Use the formula v=fλ Divide the velocity by the frequency to find the wavelength. (Make sure you add the unit λ for your final answer)

V: Velocity

F: Frequency

λ: Wavelength

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80.8g of calcium contain hot many atoms?
Taylor mixed two liquids together in a beaker. The beaker quickly heated up. What does this indicate about the reaction that took place in the beaker?A. that there was no energy transferB. that energy was createdC. that energy was transformedD. that energy was destroyed
The elements of a heterogeneous mixture can be distinguished visually. What does this mean? a. That two separate elements have been mixed together.b. That the components of the mixture cannot be separated.c. That you can see the different component parts of the mixture.d. That heterogeneous mixtures combine solids and liquids.
Which property is typical of a covalent compound?A. They are extremely hard solids.B. They have low melting and boiling points.C. They conduct electricity.D. They have rigid crystal structures.E. They exist only as gases and liquids.
19. Which atom in a water molecule has the greatest electronegativity?a. one of the hydrogen atomsb. both hydrogen atomsc. the oxygen atomd. There is no difference in the electronegativities of the atoms in a water molecule.

Which statement correctly describes the nucleus of the atom?

Answers

When atoms are considered most of the mass lies in the nucleus which has neutrons and protons. Hence the statement is true because on comparing weight of neutron and proton to the mass of electron, mass of electron will be negligible.

The mass {atomic} of any material is actually the mass we get on adding masses of proton and neutron. Electrons are about 104 kg are lighter than the mass of proton Neutron in the mass of proton and neutron and nearly equal to each other.

Answer:

An atomic nucleus contains most of the atom’s mass.

Explanation:

I took the assignment.

In general, what is the effect of tempature on the solubility of a gas

Answers

Increased temperature causes an increase in kinetic energy. The higher kinetic energy causes more motion in the gas molecules which break intermolecular bonds and escape from solution.

what best explains why the use of fossil fuels for energy production is a not a long-term solution to the world's energy needs?

Answers

We can't use fossil fuels forever, someday we will run out of coal for example.

Which elements are metalloids? Check all that apply.boron
tungsten
aluminum
bismuth
silicon
tellurium

Answers

Answer:

Boron
Silicon
Tellurium

Explanation:

Elements in the periodic table are either metals, non-metals or metalloids.
Metals are elements that react by losing electron(s) to attain an octet configuration. They occupy groups I, II and III of the periodic table and the transition metals.
Non-metals, on the other hand, are elements that react by gaining electron(s) to attain a stable configuration. Examples include halogens and noble gases among others.
Metalloids are elements in the periodic table that have the properties of both metals and non-metals.
Other examples of metalloids are arsenic, tellurium, germanium and polonium.

Answer:

Boron

Silicon

Tellurium

Explanation:

edgenuity

Which of the following objects is NOT a part of our solar system? A. the North Star B. the dwarf planet Pluto C. the asteroid belt D. Jupiter’s moons

Answers

Of the items on the list, only choice A. (The North Star) is not a part of our solar system. The items in our solar system are those objects that orbit our Sun and are enclosed inside the Oort Cloud. The North Star (named Polaris) is a star located quite some distance away from the Earth.
Hope that helped! =)

The answer is A because the North Star is a star and stars are suns not in our solar system. Hope this helped!

Scientists often have to deal with numbers that are either very large or very small. For example, the radius of the Sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. Express each number in an alternate form.In expanded notation, each bacterial cell is ___________
millimeters wide?

Answers

Answer:

The scientific notation for 696,000 km is 6.96 × 10⁵ km

The expanded notation for 1.9 × 10⁻⁴ mm is 0.00019 mm

Explanation:

The notation used by scientists to represent either very large of very small numbers is called scientific notation.

Scientific notation represents the number using powers of ten. The general form for a number expressed in scientific notation is:

$m=10^p$

Where:

m can be either positive or negative and its absolute value must be greater than or equal to zero and less than 10: 0 ≤ | m | < 10.

p can be any integer number (either positive or negative).

For the given example of the radius of the Sun, the scientific notation representation of 696,000 km is:

6.96 × 10⁵ km : since the number 696,000 should be divided by 100,000 to obtain the number 6.96, you must multiply the latter by 100,000 which is 10⁵.

For the bacterial cell, the number 1.9 × 10⁻⁴ mm needs to be changed to expanded notation. The negative 4 power means that you must divide 1.9 by 10,000 which is the same that moving the decimal point 4 places to the left. That is: