Explanation:
Gravitational potential energy
= mgh = (45kg)(9.81N/kg)(2m) = 882J.
The sled’s potential energy is 882 J.
Potential energy
The potential energy of the sled is calculated using the following formula as shown below;
P.E = mgh
Where;
m is the mass of the sled = 45 kgg is acceleration due to gravity h is the heightP.E = 45 x 9.8 x 2
P.E = 882 J
Thus, the sled’s potential energy is 882 J.
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Which of the following statements explains the difference between a lease and a loan?
a. At the end of a loan the car belongs to you, but at the end of a lease, the car still belongs to the
lease company
b. At the end of a loan, the car still belongs to the lease company, but at the end of a lease the car
belongs to you.
c. A loan requires a large down payment at the beginning while a lease does not.
d. A lease requires a large down payment at the beginning while a loan does not.
Please select the best answer from the choices provided
Answer:
letter A is the answer
Explanation:
At the end of a loan the car belongs to you, but at the end of a lease, the car still belongs to the lease company.
Explain the electroplating process of an iron key with silver. the materials provided for electroplating is AgNO3 solution, silver rod and iron key.
Answer:
See explanation
Explanation:
The process of electroplating an iron key with silver involves electrolysis.
The anode is a silver rod, the electrolyte is AgNO3 solution while the cathode is the iron key. A battery is connected to provide energy to drive the non-spontaneous electrochemical reaction.
Electrons flow from the anode to the cathode. Silver ions from the silver rod replenishes the silver that is deposited on the iron key in order to continue the electrolytic process.
The silver anode is therefore depleted in mass while the iron key increases in mass.
How many moles of NaOH must be dissolved in 1.00 L of water to make NaOH (aq) with a pH of 12.2?
Answer:
1.58 102 mol
Explanation:
I just looked it up on Quizlet.
1.58 102 moles of NaOH must be dissolved in 1.00 L of water to make NaOH (aq) with a pH of 12.2.
How many moles are present in NaOH?One mole of any substance weighs about the same as the molecular mass of that substance. Hence, the number of moles of sodium hydroxide contained in 160 g of it is 4 moles.
How do I calculate moles?Number Of Moles Formula
1 The formula for the number of moles formula is expressed as.
Given.
2 The number of moles formula is.
3 The number of moles = Mass of substance / Mass of one mole.
4 Number of moles = 95 / 86.94.
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What is the lon # for Beryllium (Be)?
Answer:
Number: 4
Charge: +2
Element: Beryllium
I hope this helps!! :)
what is observed when an iron bar is dipped into a solution
Worth a lot of points. Please only answer if u know the question. Thanks
Answer:
#7 is D. #4 is B. #5 is 13 #6 is C
Answer:
okokokokokokokok I will answer in just a moment
Explanation:
1. What net ionic equation describes the reaction between Pb(NO3)2( aq) and N a2CO3( aq) ?
O 2Na t( aq) + N0, 2( aq) → 2NaNO3( s)
O Pb 2+( aq) + 2Na t( aq) → 2NaPb( s)
O Pb 2+( aq) + CO3( aq) → PBCO3( s)
O 2Na t( aq) + CO3 2( aq) → NacO3( s)
Answer: C. Pb^2+(aq) + CO3^-2(aq) —> PbCO3(s)
Explanation:
An 80 gram sample of a radioisotopes decayed to 40 grams in 3 days how many grams of the original sample would remain after 9 days
Answer: 10 grams
Explanation: Original sample is 80 gram and every three days half of its composition decays so 80 down to 40 in the first 3 days, 20 in the next three days, and 10 in the last three days
What is true of electrons?
1. They are negatively charged and located inside the nucleus
2.They are positively changed and located inside the nucleus
3. They are negatively charged and located outside the nucleus
4. They positively changed and located outside the nucleus
Answer:
electrons are negatively charged and are located in the electron cloud (outside the nucleus)
Answer:
The answer is option 3.
Explanation:
Electrons are negatively charged and is located outside the nuclues.
Protons are positively charged, neutrons are neutral and both are located inside the nucleus.
Which change would best aid a farmer in making the transition from conventional farming techniques to more sustainable farming techniques?
irrigate crops using well water
reduce the ratio of essential elements in the fertilizer
plant only genetically modified crops
rotate the types of crops grown
Answer:
Rotate the types of drops grown
Explanation:
HELP ASAP!!! Use the drop down menus to complete the sentence. The Florida peninsula is a ____ made of sedimentary rock ____
Answer:
Plateau, limestone
Explanation:
Edge
Answer:
Plateau, limestone
Explanation:2021
Which of the following is NOT n intensive property?
A. Magnetism
B. Boiling point
C. Thermal conductivity
D. Volume
Which of the following metals is
obtained from its ore by heating?
A Aluminium
B. Calcium
C Iron
D. Lead
F Mercury please heeeeeeelp
Answer:
c. iron I hope it helped.....
Answer:
I think soon mercury ..........
What dose sediment consisting
Answer:
sediments consist of rocks and minerals, as well as the remains of plants and animals
Explanation:
HELP PLEASE ASAP :)
What is the purpose of a salt bridge?
O.
A. To supply energy for the reaction
B. To connect two electrodes
O C. To prevent charge buildup
O D. To dissolve metals into solution
Answer: B. To connect two electrodes
Explanation:
The salt bridge forms a connecting link between the two electrodes. The function of the salt bridge is not to supply electrons from one electrolyte to another but to maintain a constant balance of charge as the electrons move from one half of the cell to the another. The electrons from from negative electrode to positive electrode that is from anode to cathode.
Answer: C. To prevent charge buildup
Explanation: I just took the quiz.
What is the composition of the most common mineral compounds that make up Earth's crust and mantle? 1 silicon, oxygen, and one or more metal elements 2 sulfates, oxygen, and one or more nonmetal elements 3 carbonates, hydrogen, and one or more organic compounds 4 oxalates, oxygen, and one or more organic compounds
Answer:
(1) silicon, oxygen, and one or more metal elements
Explanation:
The earth's Crust is mainly composed of
Oxygen, Silicon, Aluminum, Iron, Calcium, Potassium, Sodium and Magnesium. 90% of the earth's Crust is composed of Silicates.
The earths Mantle is almost completely Silicate, oxygen and magnesium.
Which statements describe crossing over? Check all that apply. Crossing over occurs during prophase II of meiosis. Crossing over combines a sperm cell with an egg cell. Crossing over happens when pairs of chromosomes pair up. Crossing over ensures that a new cell is identical to the original cell. Crossing over creates new combinations of genes on chromosomes.
Answer:
Crossing over happens when pairs of chromosomes pair up
Crossing over creates new combinations of genes on chromosomes.
Explanation:
The correct answer would be that crossing over happens when pairs of chromosomes pair up, exchange chromosomal segments, and create new combinations of genes on chromosomes.
Crossing over occurs during prophase I of meiosis when homologous chromosomes pair up to form a tetrad. Paired chromosomes then exchange chromosomal segments containing genes leading to a new combination of genes on each chromosome. Hence, the resulting daughter cells are genetically different from the original cell.
Answer:
a e
Explanation:
what is the correct name for the compound MgBr?
Answer:
Magnesium bromide
Explanation:
its just the answer give brianliest
what is the value of log1.004?
Answer:
−0.60205999
Explanation:
Is zinc radioactive
Answer:
nu
Explanation:
It has five naturally occurring stable isotopes. The most common stable isotope of zinc is Zn-64. Zn-64 has such a long half-life that it radioactive properties are virtually non-existant. ... Zinc is a hard metal, but becomes very malleable above 100 degrees Celsius.
The transfer of energy in the form of invisible waves is
Answer:
Radiation
Explanation:
The products in this reaction
A have the same properties as the reactants.
В.
have the same atom arrangement as the reactants.
С.
have different properties than the reactants.
D
have fewer atoms than the reactants.
Answer:
It’s either B or C:
В. have the same atom arrangement as the reactants.
С. have different properties than the reactants.
Explanation:
Sorry, I don’t know a lot about this topic :(
The Guarantee Clause gives the legislature the power to make all necessary and proper laws.
Answer:
True
Explanation:
Answer:
True ;)
Explanation:
The two rate statements below are not the same. Use the concept of unit rates to explain
the difference.
a. LaVerne earns $10 in 2 hours.
b. Shirley earns $2 in 10 hours.
What happens when molten material travels along the underside of the crust?
Answer:
Explanation:
The earth is comprised of denser materials such as iron and nickel and other siderophile elements in the core and silicate materials in the mantle. The temperature at the core of the earth is extremely high that generates a force, that allows the molten materials (magma) to rise up from the bottom of the mantle towards the crust, in the form of convection currents. This upward movement of magma forces the lithospheric plates to move.
Thus, magma rises from the bottom of the mantle towards the crust.
Which of the following redox conditions will produce a spontaneous reaction?
A. The sum of the voltages of the half-reactions is positive.
O B. The sum of the voltages of the half-reactions is negative.
O C. The voltage of the reduction half-reaction is positive.
D. The voltage of the reduction half-reaction is negative.
Answer:
A. The sum of the voltages of the half-reactions is positive.
Explanation:
correct on a p e x
Among the following redox conditions those will produce a spontaneous reaction is The sum of the voltages of the half-reactions is positive.
What are redox reactions?Redox reactions are the reactions in which reduction reaction and oxidation reaction happens simultaneously. The term ‘redox’ is a short form of reduction-oxidation. All the redox reactions can be broken down into two different processes: a reduction process and an oxidation process.
The loss of electrons and the corresponding increase in the oxidation state of a given reactant is called oxidation. The gain of electrons and the corresponding decrease in the oxidation state of a reactant is called reduction.
For example-
H₂ + F₂ → 2HF
Hydrogen is added to Fluorine gas so Fluorine has been reduced but Hydrogen has been oxidised.
Therefore, Among the following redox conditions those will produce a spontaneous reaction is The sum of the voltages of the half-reactions is positive.
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Which of the following reactants will generate products with a solution of phosphoric acid?
a
Al(s)
b
Cu(s)
c
Au(s)
d
Ag(s)
Answer:
A. Al(s)
Explanation:
Why cells are called "little giants"?
Answer:
Giant cell, also called Langhans giant cell, large cell characterized by an arc of nuclei toward the outer membrane. The cell is formed by the fusion of epithelioid cells, which are derived from immune cells called macrophages. Once fused, these cells share the same cytoplasm, and their nuclei become arranged in an arc near the outer edge of the cell. Langhans giant cells typically form at the centre of granulomas (aggregates of macrophages) and are found in the tubercle, or primary focus of infection, in tuberculosis, in lesions of syphilis, leprosy, and sarcoidosis, and in fungal infections.Large cells that form by fusion in reaction to the presence in the body of foreign substances differ from Langhans giant cells in that their many nuclei are scattered throughout the cell. In giant-cell tumours of bone and tendon the cells have many nuclei crowded together. The megakaryocytes, the normal bone-marrow cells thought to be the source of the blood platelets, are also called giant cells.
Explanation:
I'M WORKING ON THIS SUBJECT TOO!!!!!
can multiple people use one brainly account at the same time on a computer??
Answer:
No
Explanation:
...............................
Multiple people cannot use one brainly account at the same time on a computer.
No, multiple people cannot use the same Brainly account at the same time on a computer. Brainly accounts are designed to be used by individual users and are intended for personal use. Each user should have their own separate account to access and interact with the Brainly platform. Sharing an account among multiple people simultaneously can lead to confusion, conflicts, and potential violations of the platform's terms of service. It is recommended that each person creates their own individual account on Brainly for a smooth and personalized experience.
Hence, multiple people can't access brainly at the same time.
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What is the work done on an object moved a distance of 63 m with a force of 8.5 x 103
Newtons?
Answer:
5.355 × 10³ JoulesExplanation:
I just had this question on my test