Which blocks will move under these conditions and explain

Which Blocks Will Move Under These Conditions And Explain

Answers

Answer 1

Answer:

Correct: B

Explanation:

The first block wont move because:

Σf=3-3=0N.

The second block will move because:

Σf:5-3=2N (direction to the right).

The third block will move because:

Σf=3N (direction to the right).


Related Questions

.When sodium atoms (Na) and chlorine atoms (Cl) join to make sodium chloride, or table salt, they form an ionic bond. Using this information, which pair of elements is most likely to form an ionic bond?

potassium (K) and fluorine (F)
aluminum (Al) and aluminum (Al)
sulfur (S) and oxygen (O)
calcium (Ca) and neon (Ne)

Answers

Answer:

potassium (K) and fluorine (F)

Explanation:

Potassium is an alkali metal just like sodium and fluorine is a halogen just like chlorine. A metal and nonmetal will often join to form an ionic compound.

Aluminum, if it was going to bond to itself, would be a metallic bond.

Sulfur and oxygen are both nonmetals and would form a covalent bond.

Calcium would not bond with neon as neon is a noble gas.

Answer:

A) potassium (K) and fluorine (F)

Explanation:

got it right on time for learning :)

A 30.0 mL aliquot of 0.0250 M HCl solution is titrated using 0.0500 M NaOH.

A) determine the volume of NaOH necessary and the pH at the equivalence point.

B) Determine the pH of the solution after 160.00 mL base is added.

Answers

Answer:

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hkgkfu

Explanation:

iyxyx yo gkxtuztizyidtiztizigxigxkhxhk. jvkgxitxoyfihciyxyixihxoyxyodyidtistusdtidti lo siento

if carbon dioxide is broken down. what element will it give?​

Answers

Carbon dioxide is CO2...if it’s broken down it will be C and O which are carbon and oxygen

Which of the greenhouse gases are carbon compounds?

Answers

Answer:

Methane (CH4),Carbondioxide green house gases are carbon compounds

Carbon dioxide (CO2) and methane (CH4) are two powerful greenhouse gases produced by the carbon cycle.

hlo ;) lol im banned and my name is kimboslicer it is so sad my accout is bloked 4 23:12

Answers

Answer:

lol im sorry man

Explanation:

Answer:

My old acc got banned

Explanation:

Read the description of the centrioles. What is their function?

Answers

Answer:

Typically found in eukaryotic cells, centrioles are cylindrical (tube-like) structures/organelles composed of microtubules. In the cell, centrioles aid in cell division by facilitating the separation of chromosomes. For this reason, they are located near the nucleus.

help fast plssssssssssssssssssss

Answers

Kinetic energy

That should be the answer

How do you find the scientific notation of a Avogadro's number??

Answers

Answer: ummmmmm hmmmmm

Explanation:

A carrier *
Organism that transmits disease through blood
O Person or animal that is infected with the disease but is asymptomatic
O Used to treat a bacterial infection, cannot be used to prevent an infection
Used to prevent a viral infection, must be given before the person is infected

Answers

Answer: carrier, is a person or other organism that has inherited a recessive allele for a genetic trait or mutation but usually does not display that trait or show symptoms of the disease. Carriers are, however, able to pass the allele onto their offspring, who may then express the genetic trait.

i think it is Person or animal that is infected with the disease but is asymptomatic

Explanation:

Mix 200 g of copper at 100 °C with 1,000 g of water at 20 °C. Final temp. = 21.42°C a) How much heat energy (q) did the water gain? b) Now solve for the specific heat (c) of copper:

Answers

Answer:

a) [tex]Q_w=5941.3J[/tex]

b) [tex]C_{Cu}=0.378\frac{J}{g\°C}[/tex]

Explanation:

Hello there!

In this case, when a hot substance is mixed with a cold one, we can evidence how the hot one is able to heat up the cold one as it cools down. Thus, the net heat flow for this problem can be set up as shown below:

[tex]Q_{Cu}+Q_{w}=0[/tex]

Whereas the heats can be written in terms of mass, specific heat and temperatures:

[tex]m_{Cu}C_{Cu}(T_F-T_{Cu})+m_{w}C_{w}(T_F-T_{w})=0[/tex]

Thus, we proceed as follows:

a. Here we compute Qw:

[tex]Q_w=1,000g*4.184\frac{J}{g\°C}(21.42\°C-20\°C) \\\\Q_w=5941.3J[/tex]

b. Now, since this heat is equal to the negative of the heat contribution of copper (as it cools down), we can compute the specific heat of copper as shown down below:

[tex]C_{Cu}=\frac{-5941.3J}{200g(21.42\°C-100\°C)} \\\\C_{Cu}=0.378\frac{J}{g\°C}[/tex]

Best regards!

What is the mass of chlorine in 3.9 x 1019 molecules of Cl2?

Answers

Explanation:

A photon is a quantum of EM radiation. Its energy is given by E = hf and is related to the frequency f and wavelength λ of the radiation by

E=hf=hcλ(energy of a photon)E=hf=hcλ(energy of a photon),

where E is the energy of a single photon and c is the speed of light. When working with small systems, energy in eV is often useful. Note that Planck’s constant in these units is h = 4.14 × 10−15 eV · s.

Since many wavelengths are stated in nanometers (nm), it is also useful to know that hc = 1240 eV · nm.

These will make many calculations a little easier.

All EM radiation is composed of photons. Figure 1 shows various divisions of the EM spectrum plotted against wavelength, frequency, and photon energy. Previously in this book, photon characteristics were alluded to in the discussion of some of the characteristics of UV, x rays, and γ rays, the first of which start with frequencies just above violet in the visible spectrum. It was noted that these types of EM radiation have characteristics much different than visible light. We can now see that such properties arise because photon energy is larger at high frequencies.

2. How many carbon atoms would be in 2 MOLES of carbon?​

Answers

Answer:

In one mole of carbon , there are 6.02 × 1023 atoms. so in two moles , there will be twice that = 1.204× 1024.

Sandban
Grade 8 Science Winter Interim
Question
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Signed in as NOTRE
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Question
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Normal
ABC
Question 3
Twoiron balls are dropped from a height of 100 meters One Dal Frame A) is not moving when it is dropped and the second ball is moving horizontally at a constant velocity of 10 m/s when it is dropped (Frame B). The balls follow the
trajectories indicated by the arrows and fall for 4,52 s before hitting the ground. (Ignore air resistance)
Frame A
Frame B
1kg
-10%
10kg

Answers

Ahhhhhhhhhhhh Ask some one else

Which equation has x = 5 as the solution?

2x = 5
2x = 5

x - 10 = 15
x - 10 = 15

x + 15 =10
x + 15 =10

2x = 10

Answers

Answer:

x-10 should be the answer

Witch event signals the birth of a star

Answers

Answer:

It's either C or D

Explanation:

I'm learning this too! :)

i am pretty sure D have a great rest of your day or night either one :)

Silver nitrate reacts with calcium chloride as
shown.
2 AgNO3 + CaCl2 → 2 AgCl + Ca(NO3)2
How many grams of CaCl2 would be required to completely react with 420 mL of
0.506 M AgNO3 solution?
Answer in units of grams.

Answers

Answer:

11.8g of CaCl₂ would be required

Explanation:

To solve this question we need to find the moles of AgNO₃ in the solution. Thus, and using the chemical reaction we can find the moles of CaCl₂ required for a complete reaction and its mass as follows:

Moles AgNO₃:

420mL = 0.420L * (0.506mol / L) = 0.213 moles AgNO₃

Moles CaCl₂:

Based on the chemical reaction, 2 moles of AgNO₃ react per mole of CaCl₂.

The moles of CaCl₂ that will react are:

0.213 moles AgNO₃ * (1mol CaCl₂ / 2 mol AgNO₃) = 0.106 moles CaCl₂

Mass CaCl₂ -Molar mass: 110.98g/mol-

0.106 moles CaCl₂ * (110.98g / mol) =

11.8g of CaCl₂ would be required

An ideal gas occupies a volume V at an absolute temperature T. If the volume is halved and the pressure kept constant, what will happen to it's temperature?



a. It will halve to T/2.


b. It will increase to 3T.


c. It will increase to 2T.


d. It will remain the same.

Answers

Answer:

It will be halve of T

Explanation:

V1 = V

T1 = T

V2 = ½V

T2 = x

V1/T1 = V2/T2

V/T = ½V/x

Vx = ½VT

2Vx = VT

2x = T

x = ½T

Which reactions are oxidation-reduction reactions? Check all that apply.

(1) 2 upper N a plus upper C l subscript 2 right arrow 2 upper N a upper C l.

(2) Upper P b (upper O upper H) subscript 2 right arrow upper P b upper O plus upper H subscript 2 upper O.

(3)Upper C u plus 2 upper A g upper N upper O subscript 3 right arrow upper C u (upper N upper O subscript 3)subscript 2 plus 2 upper A g.

(4)Upper Z n upper B r subscript 2 plus 2 upper A g upper N upper O subscript 3 right arrow 2 upper A g upper B r plus upper Z n (upper N upper O subscript 3) subscript 2.

(5)Upper C upper H subscript 4 plus 2 upper O subscript 2 right arrow upper C upper O subscript 2 plus upper H subscript 2 upper O.

answer- 1,3, & 5
explanation- I did it on edge 2021

Answers

Answer:

the 1st 3rd and 5th ones

EDGE 2021

Explanation:

Answer:

A

C

E

Explanation:

Give two examples of elevation.

Answers

Answer:

An example of elevation is a plane flying at 36,000 feet above the ground. An example of elevation is a pope being raised to the position of saint. An example of elevation is a ballet dancer leaping three feet in the air. ... At 8,850 m (29,028 ft), the summit of Mount Everest is the highest elevation on Earth.

Explanation:

please mark me brainly!

In terms of valence electrons, explain why metals form positive ions.

Answers

Answer:

Explanation:

Metal elements form positively charged ions called cations because they are located on the left side of the periodic table These elements all have valence electrons in an s orbital. These electrons are relatively easy for the atom to lose to achieve a stable octet of electrons in its outermost energy shell.

as insoluble ...... can be separated from a liquid by filtration on centrifugation

Answers

Answer:

by centrifugation

Explanation:

in such cases filtration cannot be used for separation

I need help I don’t get this

Answers

Answer:

Visit: gotit-pro.com

Explanation:

1) Convert pressure to atm
119 kPa x 1 atm/101 kPa = 1.18 atm

2) Convert temperature to Kelvin
35 + 273 = 308 K

3) Use PV=nRT and solve for V
(1.18 atm)(V)=(0.0972 mol)(0.0821)(308 K)

V = (0.0972 mol)(0.0821)(308 K) / (1.18 atm)

V = 2.08 L

How many lone pairs does this molecule have?

Answers

Answer:

Just 1 i.e., Option B.

Because except for top of the molecule, all other sides are filled with a letter meaning there is one free space.

Answer:

B

Explanation:

H .  +  H .   ----->  H:H            {":" represents a covalent bond, that is, a shared pair of electrons}

A Lewis structure is a convention used to represent the covalent bonding in a molecule.   Dots or lines are used to represent

valence electrons (electrons available for bonding).  The Lewis structure for the hydrogen molecule is as follows.

     H:H  or  H-H

A bonding pair is an electron pair shared between two atoms.

A nonbonding pair (lone pair, unshared pair) is a pair of electrons that remains on one atom and is not shared.

3.
Plant A
Plant B
Is tall
Is short
Has many large deep roots Has many small short roots
Has many small leaves
Has many large leaves
Comes in many different colors comes in only one color
The table shows some observations made by a group of students studying plants they will use
in a flower garden. Which conclusion is best supported by these observations?

Answers

Plant A is the answer

is photosynthesis part of chemical change?If yes can I have photosynthesis in chemical equation as chemical symbols​

Answers

Answer:

yes it is a chemical change

i have made it in above picture

in____particles are in contact with each other.

Answers

Answer:liquid

Explanation:

The particles in a liquid usually are still touching but there are some spaces between them. The gas particles have big distances between them.

which one of the following forces is a contact force force of gravity or force of friction​

Answers

Answer:

a force of friction would be like something moving that suddenly stops because of the texture of another object while a force of gravity would be something falling and gravity pulling it down :) hope this helps

Explanation:

Covalent bonds form due to the attraction between _____.

a positive atomic nucleus and a negative one

the nuclei of two atoms

the electrons of two atoms

the electrons of one atom and the nucleus of another

Answers

Answer:

the electron of one atom and the nucleus of another

When thermal energy is removed from matter, what happens to the molecules?​

Answers

Answer:

Figure it out.

Explanation:

can someone explain in detail how molar mass, Avogadro's number, and volume are all connected through moles? Im so confused :(

Answers

Answer:

See Explanation

Explanation:

By definition, 1 mole is the mass of substance (or, formula mass in grams) containing 1 Avogadro's Number (N₀ = 6.02 x 10²³) of particles. That is ...

1 mole of hydrogen atoms (H) = 1.00794 grams

1 mole of molecular hydrogen (H₂) =  2.01588 grams

1 mole of any substance = 1 formula weight in grams

1 mole = 1 Avogadro's Number (N₀) = 1 formula weight in grams

In the concept of 'gas laws' 1 mole of any (all) gas at STP conditions ( => 0°C & 1 atmosphere pressure) occupies 22.4 Liters & is known as the 'molar volume' of a gas at STP. If the temperature &/or pressure change the volume will not be 22.4 Liters.

For reactions whose coefficients are balanced to the lowest whole number values (i.e., no fractional coefficients) the equation is known as the 'standard reaction' and conditions  are assumed to be STP and the coefficients of gas phase components indicate molar volumes. Example ...

Given   N₂(g) + 3H₂(g) => 2NH₃(g)  is assumed to be at 0°C; 1 Atm pressure.

Molecular Nitrogen = 1 molar volume = 22.4 Liters of N₂(g)

Molecular Hydrogen = 3 molar volumes = 3 x  22.4 Liters of H₂(g) = 67.2 Liters of H₂(g)

Molecular Ammonia = 2 molar volumes = 2 x 22.4 Liters of NH₃(g) = 44.8 Liters of NH₃

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