Answer:
Check explanation section.
Explanation:
In order to understand balanced force and unbalanced forces the first law of Newton should be considered as a basic knowledge.
For Balanced forces, there is equal equality in the direction of the forces. In balanced forces, there is no acceleration.
For unbalanced forces, there is acceleration that is go say there is going to be movement. Therefore, net force is equal to unbalanced forces.
(i) Suitcase dropped from a height.
Answer: since there is movement that is acceleration, then the force here is unbalanced force. The resultant force is downwards.towards the greater force direction.
(ii) A bicycle moving with constant velocity on a straight road.
Answer: As the bicycle moves at constant velocity on the straight road the force here is Balanced. Frictional forces balances the forces from the cyclist.
(iii) The rope does not move in a tug of war on applying force at both ends.
Answer: Balanced force.
Solar energy does not warm Earth’s surface evenly. For example, during the day, land areas warm up faster than nearby bodies of water. How does this uneven warming affect the movement of air over land and water?
Answer:
Land and sea breeze
Explanation:
This uneven warming of the land during the day results in the phenomenon called land and sea breeze.
During the day, the land heats up faster than the nearby ocean. Ocean is made up of water with a high specific heat capacity. This derives pressurized air near the surface of the land to the ocean. At night, the ocean does not easily lose heat after the land has lost its own. Pressurized air moves from the ocean to the land. This causes the warming of the land during the night.where do you find the reactants in a chemical equation
When does a phyisical change occur?
Which will dissolve at the fastest rate?
a. 15 g of sugar cubes at 20° C
b. 15 g of sugar cubes at 60° C
c. 15 g of granulated sugar at 20° C
d. 15 g of granulated sugar at 60° C
what do plants need to live?
put a mark next to the ones that plants need to live
sunlight
soil
water
plant food from a garden store
sugar
carbon dioxide
minerals
fertilizer
leaves
oxygen
chlorophyll
vitamins
i'll mark brainliest for whoever has the right answer or who ever answers it!
Answer:
Explanation:
sunlight
soil
water
sugar
carbon dioxide
minerals
leaves
vitamins
I have a quick question how do I balance these chemical equations
VbO + E2O → Vb(OE)2
YG + T3N → TG + Y3N
Tu + JgMO3 → Tu(MO3)2 + Jg
XfRf2 + Re2 → XfRf3
When wood is burned, new substance are produced. Describe this reaction, and explain
what type of changes occurs. Use the terms flammability, chemical property, and physical
change or chemical change.
Answer:
hahahaha
Explanation:
hahahahahhahahaha soooo funny
HELP ME pls it’s in the picture below
Answer:
Hydrated chromium(III) phosphate or chromium(III) phosphate tetrahydrate.
Answer:
the IUPAC name is chromium(III) phosphate pentahydrate.
why do gases behave least like ideal gases at low temperature and high pressure?
The ideal gas law fails at low temperature and high-pressure because the volume occupied by the gas is small, therefore the inter-molecular distance between the molecules falls. And hence, an attractive force can be seen between them.
What is ideal gas law ?The ideal gas law states that the pressure, volume, and temperature of a gas are directly proportional to each other, as long as the number of particles and the mass of the gas remain constant. So long as the number of particles and gas mass remain constant.
The ideal gas law can be utilized to calculate the volume of gases produced. The ideal-gas equation often is used to interconvert between volumes and molar amounts in chemical equations.
At high pressures, the molecules of a gas are crowded closer together, and the amount of vacant space between the molecules is reduced.
Thus, gases behave least like ideal gases at low temperature and high pressure.
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In sexual reproduction, how many genes does an offspring receive for each trait ♀️
Answer:
Each parent's half of the genes acquired by the offspring. They have two of each chromosome and hence two alleles of each gene, and one acquired from each parent.
Three reasons why friction is needed
Answer:
1:Without friction, we would not be able to stop walking since we would just keep slipping like on ice.
2:Without friction, objects would just slip and fall with a simple blow of air
3:And finally, without friction, we wouldn't be able to use machinery like cars and etc since they would just fly off
Explanation:
Friction can be a useful force because it prevents our shoes from slipping on the pavement when we walk and stops car tires skidding on the road. When you walk, friction is caused between the tread on shoes and the ground. This friction acts to grip the ground and prevent sliding. Sometimes we want to reduce friction.
plzzz!!! Write the equation for rusting urgently needed
Answer:
[tex]Fe_{2} O_{3}[/tex]
Explanation:
if a +2 ion has 18 electrons, what element is it
If a sample of gas occupies a volume of 6.80 L at 325°C, what will its volume be at
25.0°C if the pressure does not change?
Answer:
3.4L
Explanation:
Given parameters:
Initial Volume of gas = 6.8L
Initial temperature of gas = 325°C = 325 + 273 = 598K
Final temperature = 25°C = 25 + 273 = 298K
Unknown:
Final volume = ?
Solution:
To solve this problem, we apply the Charles's law. It can be expressed as;
[tex]\frac{V1}{T1}[/tex] = [tex]\frac{V2}{T2}[/tex]
V and T are volume and temperature
1 and 2 are initial and final states
Now insert the parameters and solve;
[tex]\frac{6.8}{598}[/tex] = [tex]\frac{V2}{298}[/tex]
2026.4 = 598V2
V2 = 3.4L
The hydra is an organism that reproduces by growing another organism from the sie of its tubular body. What type of asexual reproduction is this?
Answer:
Explanation:
budding
Figure 13.3 (a) Hydra reproduce asexually through budding: a bud forms on the tubular body of an adult hydra, develops a mouth and tentacles, and then detaches from its parent. The new hydra is fully developed and will find its own location for attachment.
how many electrons does the atom have
Answer:
8
Explanation:
Label the liquids from least to most dense, Vegetable oil, water, Dish soap, Corn syrup, Honey
Answer:
1. Vegetable oil
2. Water
3. Dish soap
4. Corn syrup
5. Honey
Find the Oxidation Number for both Ca and F.
EXPLAIN PLEASE
Answer:
F= -1 (group 7A)
Ca= +2 (group 2)
Explanation:
oxidation #= # electrons atom gains/loses to form chemical bond
>assigned to atoms in oxidation-reduction rxn to indicate ability to donate/ gain e-
> positive oxidation #= loss of e-, negative= gain of e-
rules:
all group 2 elements (ca) have an oxidation state of 2+
group 7A (F)= -1 charge (needs to gain 1 e- to complete octet)
Two students were doing an experiment which involved adding potassium sulfate powder to water. They added one teaspoon of potassium sulfate to the water and stirred it, and all the powder dissolved. They continued to do this until, after the fourth teaspoon, no more potassium sulfate would dissolve.
As more potassium sulfate dissolves in the water, the mixture becomes
a. more concentrated.
b. less concentrated.
c. dilute.
d. more cloudy.
Answer:
less concentrated
Explanation:
because it will get dissociated into more ions
Choose the chemical equation that is correctly balanced.
Answer:
their is nothing their btw just letting you know
(02.02 MC)
During the hot summer days, there is a lot more water in the air. This is due to which change of state?
__________ is a result of a chemical reaction between pollutants and water and is one cause of chemical weathering of rock.
A.) carbon dioxide
B.) acid rain
C.) oxidation
D.) ice crystals
Answer:ice crystals
Explanation:
An atom gains electrons to become negatively charged
А
anion
B
cation
с
ionic bond
D
covalent bond
E
metallic bond
Answer:
A) an anion is an ion with a negative charge
B) a cation is an ion with a positive charge
The rest are bonds and do not pertain to the question
what is the ionic compound for sodium oxide
Answer:
Na2O
Sodium Oxide (Na2O)
Explanation:
Sodium oxide (Na2O) is an ionic compound. Its constituent atoms are, respectively, a metal and a non-metal. ... Sodium (Na), as a metal, will attempt to lose electrons to reach an octet state.
The resulting ionic compound, Na₂O, consists of positively charged sodium ions (Na⁺) and negatively charged oxide ions (O²⁻).
The ionic compound for sodium oxide is "sodium oxide" itself. In the ionic compound's formula, the metal (sodium) comes first, followed by the non-metal (oxygen). Sodium is an alkali metal with a charge of +1, and oxygen is a non-metal with a charge of -2.
The chemical formula for sodium oxide is Na₂O.
In this ionic compound:
Sodium (Na) loses two electrons to become Na⁺ (cation).
Oxygen (O) gains two electrons to become O²⁻ (anion).
The resulting ionic compound, Na₂O, consists of positively charged sodium ions (Na⁺) and negatively charged oxide ions (O²⁻).
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How many grams of barium sulfate are produced if 125 mL of .050 M sodium sulfate are reacted with excess barium nitrate in the following reaction?
Ba(NO3)2 + Na2SO4 = BaSO4 + NaNO3
Answer:
2.79g
Explanation:
Describe fusion and explain how fusion and fission are similar and how they are different.
Answer: Fusion and fission are similar in that they both release large amounts of energy. Nuclear fusion is a process in which two nuclei join to form a larger nucleus. Nuclear fission is a process in which a nucleus splits into two smaller nuclei.
Explanation:
True or False: The frog's eyes help it see in all directions. False True
False, frogs cannot see in all directions.
Would you rather get tips or a commission for your wages? Why?
Answer:
commission
Explanation:
Employers benefit from paying a commission to their employees because it means that they only pay the employee if there is a sale. ... It also improves the cash flows of the business because it means that employees are only paid when money is coming in from a sale.
If i were a maneger I would love commision For the reason that is stated above, but if I was just an employe I would rather work from tips.
The amount of kinetic energy an object has depends on which feature of the object?
Answer:
I think it is A
Explanation:
Because if you think about is Kinetic energy is motion
so i think it is
Its motion
As you move from left to right across the second period of the periodic table
A. Ionization energy increases
B. Atomic mass decreases
C. Electronegativity decreases
D. Atomic radii increase
Answer:
A. ionizing energy increases
A tabular form in which the chemical elements are positioned according to the chemical and physical attributes is called the periodic table. The horizontal rows from left to right is referred as periods in the table.
The correct option is:
Option A. Ionization energy increases
This can be explained as:
The ionization energy raises from left to right because of valence shell resilience.The nuclear charge on the atom expands and protons in the nucleus lure the electrons more strongly.Therefore due to the high proton number, the ionization increases across the period.
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