If the frequency is doubled and the speed is kept constant,
which of the following is true about wavelength?
a. wavelength will not change
b. wavelength will also double
c. wavelength will decrease to half its value
d. wavelength will be 3 times larger.


(science)

Explanation:

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Answer:

Explanation:

Answer:

The restoring force that prevents the furniture from tipping over when pushing the furniture towards the right, F= W × D

Where;

W = The weight of the furniture

D = The horizontal distance from the center of gravity of the furniture, CG and the to the lower right corner of the furniture

Given that A > D, for the furniture to tip over when pushing above the CG, we have;

F1 × A ≤ W × D

∴ F1 << W or for a force much smaller than W, the weight of the furniture applied above the center of gravity, the furniture will tip over

However when the force F2 is applied, where C < D, we have for no tipping over;

F2 × C ≤ W × D, therefore, given that C < D, when a force much higher than the weight, W, is applied at F2, the furniture will remain upright

Therefore, it is better push at a point lower than or equal to the center of gravity, whereby the point B is lower than the center of gravity, it is better to push at point B, Ravleen is correct and it is better to push at point B because the center of gravity is lower

If the furniture is pushed at the wrong spot it may tip over

Please see attached drawing

Explanation:

1.39 g HCl

Explanation:

The balanced chemical equation for this reaction is given by

Zn(s) + 2HCl(aq) ---> ZnCl2(aq) + H2(g)

Convert the # of grams of Zn to moles:

1.25 g Zn × (1 mol Zn/65.38 g Zn) = 0.0191 mol Zn

Use the molar ratio to find the # of moles of HCl needed to react completely with the given amount of Zn:

0.0191 mol Zn × (2 mol HCl/1 mol Zn) = 0.0382 mol HCl

Convert this amount to grams:

0.0382 mol HCl × (36.458 g HCl/1 mol HCl) = 1.39 g HCl

Answer: 1.58 x [tex]10^{23}[/tex]

Explanation:

1 mole of magnesium chloride has a mass of 95.211 g and contains 6.022⋅[tex]10^{23}[/tex]formula units of magnesium chloride, you can say that,

25.0 g x (6.022 x [tex]10^{23}[/tex] form units MgCl2) /95.211 = 1.58 x [tex]10^{23}[/tex]

(D)

Explanation:

On the left side two molecules, each made of 2 grays and 3 blues, which suggests that only (D) offers the right combination: 2 Al atoms and 3 O atoms that make up Al2O3.

Answer:

D is the answer

Explanation:

Because thermal is Heat Energy

I hope it's right

Thermal energy is the energy associated with temperature. The correct option is d.

Thermal energy is the energy associated with a substance's or system's temperature. It is a type of kinetic energy that results from the random motion of tiny particles.

The higher the temperature, the larger the average kinetic energy of the particles and the bigger the amount of thermal energy present.

Heat transmission, phase shifts (such as melting or boiling), and the general thermal behaviour of materials all require thermal energy.

It differs from other types of energy including electrical energy (option a), chemical potential energy (option b), and gravitational potential energy (option c).

Thus, the correct option is d.

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Answer:

sodium phosphide!!!!!!!!!!!!!!!

Answer: 2.86 inches

Explanation: To find the radius, then, we insert 18 in for the circumference. So 18=2∏r. Solving for r gives 9/∏, or approximately 2.86 inches.

Answer:

2.86 inches

Explanation:

44.5 g Al2(SO4)3

Explanation:

# moles Ba(NO3)2 = (0.543M)(0.717 L)

= 0.389 mol Ba(NO3)2

Now we use the molar ratios,

0.389 mol Ba(NO3)2 ×(1 mol Al2(SO4)3/3 mol Ba(NO3)2)

= 0.130 mol Al2(SO4)3

0.130 mol Al2(SO4)3 × (342.15 g Al2(SO4)3/(1 mol Al2(SO4)3)

= 44.5 g Al2(SO4)3

Answer:When two plates travel in the same direction, they intersect or collide. A convergent boundary is a collision between two plates that are traveling in the same direction. Large damaging earthquakes occur from the collision. The forming of massive folded mountains occurs as two continental plates collide.

Explanation:

Answer:

A transverse wave has crests and troughs and a longitudinal has compressions and rarefactions.

Answer:

It Attracts Protons And Neutrons

Explanation:

The strong nuclear force can be regarded as strong interaction. It is force which is strong enough to overcomes repulsive force that exist between two positively charged protons, and this give room for protons and neutrons to stick together in small space.This strong interaction can as well be regarded as attractive force and it binds elementary particles known as quarks together and it forms the "nucleons " which is (protons and neutrons) . It should be noted that strong nuclear force Attracts Protons And Neutrons in an atom

Answer:

c

Explanation:

edge

Answer:

2Na + 2H20--> 2NaOH+H2

............. this is the ans

Answer:

Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.

Explanation:

The key components of nitrogen cycle are :nitrogen fixation, nitrification, assimilation, ammonification and denitrification.

It is a bio-geochemical cycle through which nitrogen is converted into multiple chemical forms when it circulates among atmospheric, terrestrial  and marine ecosystems .

Conversion of nitrogen is carried out through physical and biological processes.Nitrogen cycle is important as it affects of ecosystem processes like primary production and decomposition.

Conversion of nitrogen gas to nitrates and nitrites through atmospheric , industrial and biological processes is called nitrogen fixation. Nitrogen is assimilated in plants in form of nitrates or ammonium forms.When an animal or plant dies the nitrogen in organic form is converted to ammonium which is mineralization.

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Answer:

B hope help you stay happy

Answer:

0.11 moles

Explanation:

The equation of the reaction is;

2SO2 + O2 ------>2SO3

Number of moles of O2 in 3.42 g = 3.42g/32 g/mol = 0.11 moles

Hence, 0.11 moles of O2 is consumed when 3.42 g of O2 reacts with SO2 to form SO3.

Answer:

12

my advice is split the equation into 2 and write on each side how many atoms of each element are there and it will be easier to balance.

Answer:

partial pressure of gas D Pd = 15.5 kPa

Explanation:

As per the Dalton's law of partial pressure, in a mixture, pressure exerted by each gas when summed gives the total partial pressure exerted by mixture.

P(Total) = P1+P2+P3.....

Given P(Total) = 35.7 kPa

Partial pressure of gas A Pa = 7.8 kPa

Partial pressure of gas B Pb = 3.7 kPa

Partial pressure of gas C Pc =  8.7 kPa

There, Partial pressure of gas D Pd = P(Total) -(Pa+Pb+Pc)

Pd = 35.7-(7.8+3.7+8.7) = 35.7-20.2 kPa = 15.5 kPa

Therefore, partial pressure of gas D Pd = 15.5 kPa

The molarity (M) of a solution is 11.5 M that contains 0.75 moles of lithium fluoride, LiF in a 65 ml of solution.

Molarity (M) is defined as the number of moles of solute dissolved in 1L of solution. Molarity is also known as Molar concentration. The S.I Unit of Molarity is molar (M) or mol/L.

Molarity (M) = [tex]\frac{\text{Number of moles of solute}}{\text{Volume of solution (in liters)}}[/tex]

From the above definition it is clear that the volume of solution is in liter. In question the volume of solution is given in ml.

So, convert 65 ml into l.

65 ml = [tex]\frac{65}{1000}[/tex] = 0.065 l

Now, put the values in above formula, we get that

(M) = [tex]\frac{0.75}{0.065}[/tex] = 11.5 M

Thus, the molarity of a solution is 11.5 M that contains 0.75 moles of lithium fluoride, LiF in a 65 ml of solution.

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Answer:

C5P4

Explanation:

the answer is C5P4 because penta is 5 and tetra is 4

Answer:

433 m

Explanation:

Since the fall represents motion under gravity, we use the equation

s = ut - 1/2gt² where s = height of cliff or distance bowling ball falls through, u = initial velocity of bowling ball = 0 m/s(since it starts from rest), t = time = 9.4 s and g = acceleration due to gravity = -9.8 m/s².

So, substituting the values of the variables into the equation, we have

s = 0 m/s × 9.4 s - 1/2 × 9.8 m/s² × (9.4 s)²

s = 0 m - 1/2 × -9.8 m/s² × 88.36 s²

s = 1/2(865.928 m)

s = 432.964

s ≅ 433 m

Answer:

Like Venus, Mercury orbits the Sun within Earth's orbit as an inferior planet, and its apparent distance from the Sun as viewed from Earth never exceeds 28°. This proximity to the Sun means the planet can only be seen near the western horizon after sunset or the eastern horizon before sunrise, usually in twilight.

Explanation:

Answer:

7200 kPa

Explanation:

Applying,

PV/T = P'V'/T'................ Equation 1

Where P = Initial pressure of neon gas, V = Initial volume of neon gas, T = Initial temperature of neon gas, P' = Final pressure of neon gas, V' = Final volume of neon gas, T' = Final Temperature of neon gas

Make P' the subject of the equation

P' = PVT'/V'T.............. Equation 2

Given: P = 900 kPa, V = 8.0 L, T = 300 K, V' = 2.0 L, T' = 600 K

Substitute these values into equation 2

P' = (900×8×600)/(2×300)

P' = 7200 kPa

The Balanced chemical equation for above reaction will be :

[tex] \small{ \mathrm{3NaBr + H_3PO_4 \rightarrow Na_3PO_4 + 3HBr}}[/tex]

The Coefficients will be :

So, Correct option is :

A. 3, 1, 1, 3

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Answer:

1. Allele for shortness (t)

2. Allele for tallness (T)

Explanation:

Gregor Mendel performed numerous experiments using pea plants (Pisium sativum). He tested the height traits of pea plants by crossing tall pea plants (TT) and short pea plants (tt) to obtain offsprings that were all tall (Tt) in the first filial generation (F1).

This is possible because the allele for tallness is DOMINANT while the allele for shortness is RECESSIVE. This means that tallness allele (T) will mask the phenotypic expression of shortness allele (t) when in an heterozygous state (Tt) as in the F1 generation.