moves.
whats the meaning
Speed ?
and the
meaning of
of Motion?

Hurry I have 15 minutes please help

Answer:

its d

Explanation:

i got it right

It is given that, 2 full wheel barrows are required for cleaning of 3 stalls. Then about 9 and half wheel barrows are required to clean 14 stalls.

Wheel barrows are metallic containers with three wheels attached within. Wheel barrows are mainly used to transport materials across short distances. It needs to pull or push  across the way. The handle in front helps to hold it.

The weight of materials that can be transported using the barrows depends on the volume of barrows.

It is given that, rose needs two full wheel burrows. The partial wheel burrows are also possible.

Then, the number of wheel burrows required to clean 14 stalls is calculated as follows:

2 × 14 / 3 = 9.3.

Therefore, 9 full wheelbarrows and one half burrow is needed to clean 14 stalls.

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Answer:

It is Se.

hope this helps.

The general form of a neutralization reaction is HF + FrOH → FrF + H₂O

We refer to this as a neutralisation reaction. Only this reaction, which produces NaCl and water as products, is a neutralisation reaction since it involves HCl and NaOH. The resulting response is listed below: NaCl(aq) + H₂O = HCl(aq) + NaOH(aq) (l)

The interaction of H⁺ ions and OH⁻ ions produces water in a neutralisation reaction, which occurs when an acid and a base combine to make water and a salt. The neutralisation of a strong acid and strong base yields a pH of 7.

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For Test One, phenotype ratio is Short fur : Long fur = 2 : 0; For Test Two, the phenotype ratio is Short fur : Long fur = 3 : 1; For Test Three, the phenotype ratios will be Short fur : Long fur = 0 : 2

For Test One:

Parent 1: FF (homozygous dominant for short fur)

Parent 2: Ff (heterozygous for short fur)

The Punnett square for this cross will give the following genotype ratios:

FF : Ff = 1 : 1

And the corresponding phenotype ratios will be:

Short fur : Long fur = 2 : 0 or 100% short fur

For Test Two:

Parent 1: Ff (heterozygous for short fur)

Parent 2: Ff (heterozygous for short fur)

The Punnett square for this cross will give the following genotype ratios:

FF : Ff : ff = 1 : 2 : 1

And the corresponding phenotype ratios will be:

Short fur : Long fur = 3 : 1 or 75% short fur and 25% long fur

For Test Three:

Parent 1: ff (homozygous recessive for long fur)

Parent 2: ff (homozygous recessive for long fur)

The Punnett square for this cross will give the following genotype ratios:

ff : ff = 1 : 0

And the corresponding phenotype ratios will be:

Short fur : Long fur = 0 : 2 or 100% long fur

For this investigation, the test variable is the breed of hamster and the outcome variable is the phenotype of the hamster.

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If 13 percent of the carbon-14 in a sample of cotton cloth remains, what's the aproximate age of the cloth?

When we are dating something using the carbon-14 decay we usually use this formula:

N = N0 * (1/2)^(t/thl)

Where N is the quantity remaining after the time t. N0 is the initial amount. t is the elapsed time and thl is the half-life of the substance.

We know that 13 % of the carbon-14 in the sample remains. So let's supose that we originally had 100 g of carbon-14, the amount that remains is 13 g.

N = quantity remaining = 13 g

N0 = initial quantity = 100 g

The half-life of carbon-14 is a constant. And t is our unkwnon.

thl = 5730 years t = ?

Now we can replace the values that we know and try to solve the equation for t that is the age of the cloth.

N = N0 * (1/2)^(t/thl)

13 g = 100 g * (0.5)^(t/5730 years)

13/100 = (0.5)^(t/5730 years)

0.13 = (0.5)^(t/5730 years)

We can apply on both sides ln.

ln 0.13 = ln [(0.5)^(t/5730 years)]

ln 0.13 = (t/5730 years) * ln 0.5

ln 0.13/ln 0.5 = t/5730 years

t = (ln 0.13/ln 0.5) * 5730 years

t = -2.04/(-0.69) * 5730 years

t = 16940 years

Answer = the aproximate age of the cloth is 16940 years

The net ionic equation for the reaction between potassium sulfide and magnesium iodide is S2- + Mg2+ -> MgS, as the potassium and iodide ions are spectator ions and do not participate in the reaction.

To determine the net ionic equation for the reaction between potassium sulfide (K2S) and magnesium iodide (MgI2), we first need to identify the ions present in each compound and then determine the products formed when they react.

Potassium sulfide (K2S) dissociates into two potassium ions (K+) and one sulfide ion (S2-):

K2S -> 2K+ + S2-

Magnesium iodide (MgI2) dissociates into one magnesium ion (Mg2+) and two iodide ions (I-):

MgI2 -> Mg2+ + 2I-

Now, we need to determine the possible products when these ions combine. Since potassium (K+) has a +1 charge and iodide (I-) has a -1 charge, they can combine to form potassium iodide (KI):

K+ + I- -> KI

Similarly, magnesium (Mg2+) and sulfide (S2-) can combine to form magnesium sulfide (MgS):

Mg2+ + S2- -> MgS

Now, we can write the complete ionic equation by representing all the ions present before and after the reaction:

2K+ + S2- + Mg2+ + 2I- -> 2KI + MgS

To obtain the net ionic equation, we remove the spectator ions, which are the ions that appear on both sides of the equation and do not participate in the actual reaction. In this case, the spectator ions are the potassium ions (K+) and the iodide ions (I-).

Thus, the net ionic equation for the reaction between potassium sulfide and magnesium iodide is:

S2- + Mg2+ -> MgS

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Answer:

Voltage is the measure of electric potential energy per unit charge, current is the flow of electric charge through a circuit, and resistance is the property of a material that opposes the flow of electric current.

Ohm's Law relates these three concepts by stating that current is directly proportional to voltage and inversely proportional to resistance.

Hope this helps!

Answer: The bond angle remains 120

Explanation:

Answer:

gallium

Explanation:

Ga +++ as it is the only ion with that features

One of the ways to minimize a collision is to slow down: When you can't find an escape and you're definitely going to collide with something, you should slow your vehicle down as much as possible.

Hope this helps ^^

(a) Van der Waal's forces. Van der Waal's forces are weak electrostatic interactions between non-polar molecules.

These weak forces arise from the fluctuating dipoles within the molecules, which cause temporary charges to develop and attract each other. This attraction leads to the formation of weak intermolecular bonds, which are mainly responsible for the attraction between non-polar molecules. These forces are weak in comparison to other intermolecular forces, such as hydrogen bonding and ionic bonds, but are still important for the stability of non-polar molecules and their ability to dissolve in other non-polar solvents.Van der Waals forces are attractive intermolecular forces between molecules caused by the fluctuating dipole moments of molecules.

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complete question:The attraction that non-polar molecules have for each other is primarily caused by —

(a) Van der Waal's forces (b) Difference in electronegativities

(c) Hydrogen bonding (d) High ionisation energy​

Answer:

As potential energy increases, kinetic energy decreases

It's an inverse relationship

The percent error of Chemistry student : 7.4%

Given

40 °C measurement

Required

The percent error

Solution

% Error : difference between the theoretical value and the actual value

or

% Error : Absolute Error / Accepted Value

Absolute Error = Measured Value - Accepted Value

% Error for Chemistry student  :

1. Subtract the measurement value with the accepted value

= 40 °C - 43.2 °C

= -3.2 °C

2. Divide by the accepted value, and multiply by 100

= |-3.2/43.2| x 100%

= 7.4%

Answer:

The major innovation made from Abacus to the present fifth generation​ is explained below in details.

Explanation:

Industrial Age - 1600

John Napier, a Scottish noble and diplomat consecrated much of his holiday time to the learning of mathematics. He was particularly engrossed in devising methods to aid estimates. His most famous offering was the discovery of logarithms. He listed logarithmic measures on a set of 10 board rods and thus was capable to do multiplication and division by equaling up numbers on the poles. These became recognized as Napier’s Bones.

Answer: Because glass is hard, it must be a supercooled liquid. Glass, however, is actually neither a liquid supercooled or otherwise not a solid.

Hope this helped! Good luck, bye.

Answer:

Ratio = 2 : 3 (Approx.)

Explanation:

Given:

Compound A = 1.278 g

Compound B = 1.904

Find:

Ratio

Computation:

Ratio = Compound A / Compound B

Ratio = 1.278 / 1.904

Ratio = 2 : 3 (Approx.)

Answer:

Balanced Equation:

2HCO + 4O –––> H2 + 2CO3

Answer:

1760 HZ

Explanation:

Just took the test

Hope this helps :)

Answer:

1760 Hz

Explanation:

A chemical reaction is known by;

2. Heat is released

3. A gas is given off

A change in color may indicate that a chemical reaction has occurred. For example, when iron is exposed to air and moisture, it rusts and turns from silver to reddish-brown.

If a gas is produced during a reaction, it can indicate that a chemical reaction has occurred. For example, when baking soda is mixed with vinegar, carbon dioxide gas is produced, which causes bubbles to form.

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Answer:

The empirical formula of the compound is C2H5O.

Answer:

The nuclide formed by the β decay of 26Al is 26Mg.


Mark my answer as brainliest! this was a difficult one

Answer:

C.) protons and neutrons

Explanation:

Most atoms contain proton(s), neutron(s), and electron(s). Within the nucleus of an atom, there are protons and neutrons. Electrons are located outside of the nucleus.

Solution :

Let, intensity at distance 3 m from the acoustic source is \(I_o\).

We need to find the distance d where the intensity is \(\dfrac{I_o}{2}\).

Now, we know intensity is inversely proportional to square of distance between the source.

\(\dfrac{I_o}{\dfrac{I_o}{2}} = \dfrac{d^2}{3^2}\\\\d^2 = 18 \\\\d = 3\sqrt{2}\ m\)

Therefore, intensity will be halved at a distance of \(3\sqrt{2}\ m\).

Answer:

D. the minerals they contain

Hope this answer is right!!

Answer:11.32g/cm3

Explanation: density of any material doesn't change no matter how much of this material you take

Answer:

The answer is 4.80 x 1014s-1b

Explanation:

625 nm x 10-9m= 6.25 x 10-7 m = c = 2.998 x 108m/s1 nm 6.25 x 10-7m=4.80 x 1014s-1b.)

The frequency of visible light is equal to 4.8 ×10¹⁴s⁻¹.

Frequency can be described as the number of oscillations of a wave in a time of one second. The frequency of the wave or light has S.I. units which are per second (s⁻¹) or hertz.

Wavelength can be defined as the distance between the two adjacent points of a wave in the phase with each other. Two adjacent crests or adjacents troughs on a wave are separated by a distance is called wavelength.

The relationship between the speed of light, frequency, and wavelength is:

c = νλ

Given, the wavelength of the light, λ = 625nm = 625 × 10⁻⁹ m

Then we know that the speed of light, c = 3 × 10⁸ ms⁻¹

The frequency of the light can be calculated from the above-mentioned equation:

The frequency of the given visible light will be equal to:

ν = c/λ = 3× 10⁸ ms⁻¹/625 × 10⁻⁹ m = 4.8 ×10¹⁴ Hz

Therefore, the frequency of visible light is equal to 4.8 ×10¹⁴ Hz.

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