The net force acting on the box is 15 N which is the difference of the two acting forces and the box shifts to the right in the direction in which greater amount of force is applied.
What is force?Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.
It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.
The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.
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What happens when dilute sulphuric acid is poured on a copper plate?
How many lone pairs does this molecule have?
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.
Think of the of the body that we need in order to do things like walk, run etc. What systems are these? How do they work together so you can do these activities?
Answer:
I dont get this
Explanation:
MORE THEN ONE ANSWER Factors affecting energy transfer
Lesson 2.14-2.15
Question 9 options:
Wind moving over a relatively flat water surface has less area to come in contact with the water, and this reduces energy transfer.
Larger waves have extra spaces and areas to trap air, increasing the transfer of the wind's energy to the water.
Wind moving over a relatively flat water surface has GREATER area to come in contact with the water, and this INCREASES energy transfer.
SMALLER waves have extra spaces and areas to trap air, increasing the transfer of the wind's energy to the water.
Answer:
1.) Wind moving over a relatively flat water surface has less area to come in contact with the water, and this reduces energy transfer.
2.) Larger waves have extra spaces and areas to trap air, increasing the transfer of the wind's energy to the water.
Explanation:
I got it right on the test.
Wind moving over a relatively flat water surface has less area to come in contact with the water, and this reduces energy transfer and Larger waves have extra spaces and areas to trap air, increasing the transfer of the wind's energy to the water.
What is energy transfer?When energy of any body travels from the one body to the another body, then transfer of energy takes place.
In the oceans, winds transfer their energy to the ocean or to the sea by the interaction with the surface water. When on the surface of ocean or sea up and down movement of water occurs then the interaction of that water with wind takes place and transfer of energy from wind to sea happen. More roughness or more height of the water on the surface of sea observed ten more transfer of energy from wind to sea occur.
Hence, option (1) & (2) is correct i.e. wind moving over a relatively flat water surface reduces energy transfer and Larger waves increasing the transfer of the wind's energy to the water.
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Which of the following could be an empirical formula? a C6H12O6 b H2O2 c CH2O d C6H6
Answer:
A C6H12O6 will be the empirical formulae.
Which of the following statement is wrong?
A)Leaves can make food when there is sunlight
B)Stamen will develop into a fruit
C)Stem helps in the conduction of water
D)Plants need air, water and sunlight to grow
Answer:
C) Stem helps in the conduction of water
Explanation:
It's the xylem and phloem present in the vascular bundles of stems that conduct water and minerals across the plant. Stems bear flowers and fruits in a position that facilitates the processes of pollination, fertilization, and dispersion of seeds. So, stem doesn't help in the conduction of water.
Answer:
the person above is correct
Explanation:
jjecjjeccejec hello good day?
The chemical equation below represents a reversible reaction.
H2PO4- + H2O ↔ H3PO4 + OH-
Which pair represents an acid and its conjugate base?
Answer:b
Explanation:
bc
In the given chemical equation, H₃PO₄ is an acid while it's conjugate base is OH⁻.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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how much energy is used to raise the temperature of 3kg of aluminium from 18°C to 23°C? Use the table below and this equation: Q=mc T
A. 13,455 J
B. 2691 J
C. 13.455
D. 4.485 J
How much energy is required to raise the temperature of 3 kg of aluminum from 18°C to 23°C? Use the table below and this equation: Q=mcΔT
.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)
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 :)
what physical properties does radium have
Answer:
Radium is silvery, lustrous, soft, intensely radioactive. It readily oxidizes on exposure to air, turning from almost pure white to black. Radium is luminescent, corrodes in water to form radium hydroxide. Although is the heaviest member of the alkaline-earth group it is the most volatile..
Can Intrusive and Extrusive Igneous rocks form from the same mineral composition?
In an experiment, students were instructed to equally heat a sample of soil and a sample of water with heat lamps and then measure the temperature of each sample every minute for five minutes. The results are shown in the table.Which of the following predictions is BEST supported by the data?
Answer:
Explanation:
D. i had this on my science test!!!
Answer:
D
Explanation:
yup its D
Sandban
Grade 8 Science Winter Interim
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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
Which process occurs when a gas turns into a liquid?
Answer:
Condensation
Explanation:
classify matter as elements mixtures and compounds
Answer:
An element contains just one type of atom. A compound contains two or more different atoms joined together. A mixture contains two or more different substances that are only physically joined together, not chemically. A mixture can contain both elements and compounds.
Can y’all helping me solving this l will make you the brainlest❤️
Answer:
Genotype = genetic makeup or allele combination
phenotype = physical appearance
homzygous = both alleles are the same
heterozygous = both alleles are different
dominant allele = represented by a capital letter
recessive allele = lowercase letter
the indicated gene codes for a protein made up of the amino acid
Answer:
N/A
Explanation:
Is this a true or false answer or.....?
what physical properties does lithium have
Answer:
Lithium has a melting point of 180.54 C, a boiling point of 1342 C, a specific gravity of 0.534 (20 C), and a valence of 1. It is the lightest of the metals, with a density approximately half that of water. Under ordinary conditions, lithium is the least dense of the solid elements.
Appearance: soft, silvery-white metal
Atomic Number: 3
Atomic Radius (pm): 155
C7H6O3+ C4H6O3=C9H8O4+H20
- Balance the above equation.
Answer:
2C7H6O3 + C4H6O3 - - - > 2C9H8O4 + H2O
Explanation:
Reactants:
2C7H6O3 + C4H6O3
C = 18
H = 18
O = 9
Products:
2C9H8O4 + H2O
C = 18
H = 18
O = 9
1. The diagram above shows the repeating groups of atoms that make up two samples. Will the
properties of the two samples likely be the same or different? (Examples of properties are smell,
color, and the temperature at which a substance melts.)
Answer:
Will likely be the same
Explanation:
We can see in both pictures there is a black molecule and a red molecule. However, we also have a purple molecule in one image and a yellow in the other. It would LIKELY be the same because we have more of the same molecules then more different molecules. Hope this helps
DIMENTIONAL ANALYSIS!
‼️ASAP!!! BRAINLIEST!!‼️
PLS HELP!!! SHOW ALL WORK + STEPS!! Thx!
Answer:
1037.56 mph
Explanation:
We are told the distance around the earth which is the circumference is 40075 km.
Converting to miles gives 24901.451 miles
Formula for speed = distance/time
Time for one rotation is 24 hours.
Thus, speed = 24901.451/24 = 1037.56 mph
Which gases in the following list exist as separate atoms: hydrogen, helium, nitrogen, oxygen, neon.
Select one:
a. Hydrogen and helium
b. Helium and nitrogen
c. Helium and neon
d. Oxygen and nitrogen
helium and neon ( answer C)
Study the chemical reaction below and answer the questions that follow: 8Al + 3Fe₃O₄ → 4Al₂O₃ + 9Fe How many moles of iron would be produced if 4.0 moles of aluminum reacts with an excess of Fe₃O₄?
A. 4.0 moles
B. 4.5 moles
C. 8.0 moles
D. 9.0 moles
Answer: the answewr is A. hope this helps!
Explanation:
What is the molarity of a solution that contains 3.66 mol KCl in 7.98 L solution?
Answer:
.4586M
Explanation:
It's simple, just devide the mol value by the volume value. So 3.66mol/7.98L=.4586M
What does a TRAAP test stand for
Answer:
TIMELINESS, RELEVANCE, AUTHORITY, ACCURACY and PURPOSE.
Explanation:
hope it helps!
Answer: TRAAP stands for Timeliness, Relevance, Authority, Accuracy and Purpose.
Explanation:
Compare the seasons on Titan to the seasons on Earth.
how many formula units of lead (IV) phosphate in 1.75g
I'LL GIVE 30 POINTS PLEASE ANSWER!!!
Which terms correctly identify the indicated structures in this sketch of a cell viewed under a microscope? Match each label to the correct cell part. Question 5 options: Golgi Apparatus Nucleus Endoplasmic Reticulum Mitochodrion Ribosome Lysosome
1.
2.
3.
4.
5.
6.
What is the mass in grams of 0.94 moles of sodium bicarbonate. NaHCO3?
Mass of a substance = Moles of a substance × molar mass of a substance
We have 0.94 moles of NaHCO3. The molar mass of NaHCO3 is the sum of the atomic masses of the elements comprising NaHCO3, which is approximately 84.007 g/mol.
The mass of 0.94 moles of sodium bicarbonate is therefore (0.94 moles NaHCO3)(84.007 g NaHCO3/mol NaHCO3) = 78.97 ≈ 79 grams of sodium bicarbonate.
What is the formula for the compound formed by Al3+ and N3- ?
Answer:
[tex]\boxed {\boxed {\sf AlN}}[/tex]
Explanation:
The goal when forming compounds is to achieve a net charge of 0.
We are given aluminum with a charge of 3+ and nitrogen with a charge of 3-.
These charges are equal and opposite, so one of each will equal 0.
3+ (Al) + 3- (N) = 0Therefore, we do not need any subscripts. List the metal's symbol (aluminum) then the nonmetal.
AlNTh formula for the compound, which is aluminum nitride, is AlN.