Answer:
2450 joules
Explanation:
The formula for potential energy is PE = m x g x h
m is the mass, in kg (50)
g is the acceleration due to gravity, in meters per second squared (9.8)
h is the height, in meters (5)
The problem gives m = 50, g = 9.8, and h = 5. Plug that into the formula and get the answer.
[tex]PE = mgh\\PE = (50) (9.8) (5)\\PE = 2450[/tex]
According to law of conservation of energy and substitution of values in formula gives,2540 joules as maximum kinetic energy.
What is law of conservation of energy?According to law of conservation of energy, it is evident that energy is neither created nor destroyed rather it is restored at the end of a chemical reaction .
Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.
Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.Substitution in formula gives , PE=50×9.8×5=2540 J.
Thus, the maximum kinetic energy she can reach when she skis to the bottom of the slope is 2540 J.
Learn more about law of conservation of energy,here:
https://brainly.com/question/29775341
#SPJ7
WHAT MEASURING EQUIPMENT DID LEANNE USE TO GET HER RESULTS
Answer:
Thietbi od
Explanation:
8. If 400 mL of gas has a temperature of 75°C, then what would be the new volume if the temperature increased to 95°C?
We are given:
V₁ = 400 mL T₁ = 75°c = (273+75)K = 348K
V₂ = x mL T₂ = 95°c = (273+95)K = 368K
Deriving Boyle's Law:
here, we can see that the volume and temperature are the only variables
from the ideal gas equation:
PV = nRT
T /V = P / nR
because P, n and R are constants, P/nR is a constant value
T / V = constant
which means that the initial and final ratio of P and T will be constant, hence:
T₁ / V₁ = T₂ / V₂, this is also known as the Charles' law. what I did above was it's derivation
Finding final volume:
plugging the given values:
348/400 = 368 / x
x = 368*400 / 348
x = 422.9 mL
how does gas create pressure?
a. the force of a collision between two gas molecules with the same amount of kinetic energy creates pressure
b. the force of a collision of a gas molecule against the walls of its container create pressure
c. the force of a collision between two gas molecules with different temperatures creates pressure
d. the force of a collision of a gas molecule against the air in a container creates pressure
What is a decay series?
a series of reactions that never ends
a different form of chemical bonding
a chain of decays that results in a stable nucleus
a series of chemical reactions that ends with a decay\
HELPPPPPP
Answer:
a chain of decays that result in a stable nucleus
Explanation:
Decay series is a series of decay in which radioactive element is decomposed in different elements until it produces one stable atom.
Answer:
C
Explanation:
took test Edg
Plz answer fast , (it’s a picture
Answer:
Explanation:
1.4193.61
2.1.69205e7
3.1.57611e14
4.46270.5
2A(g) + B(l) ⇌ 3C(aq) + D(s)
Answer:
B
[(0.75)^3(0.25)]÷[(0.50)^2(0.75)]
Explanation:
toppr dot com
Write the electronic configuration of the following element or ion and circle on their valance electrons
A.27 Al =
13
B. 31p-3
15
please answer my question now ! I will give you a Brinalist
1s2,2s2,2p6
Explanation:
electron arrangements
HELP ASAP
Explain the factors that affect the sounds we hear. Support your response with evidence and scientific reasoning including relationship between wave properties and sound characteristics you explored in this . In your response you should each of the following terms:
Loudness/Volume Pitch Frequency Amplitude
Answer:
The loudness of sound is determined, in turn, by the intensity, or amount of energy, in sound waves. The unit of intensity is the decibel (dB) Intensity of sound results from two factors: the amplitude of the sound waves and how far they have traveled from the source of the sound.
Explanation:
1.00 mole of an ideal gas occupies a volume of 22.4 L at 0 C and 760 mmHg (STP). It is cooled to -41 C while the pressure is increased to 805 mmHg. What is the new volume of the gas in liters?
Answer:
[tex]V_2=18.0L[/tex]
Explanation:
Hello there!
In this case, according to the given information, we infer that we need the combined gas law in order to solve this problem:
[tex]\frac{P_2V_2}{T_2}} =\frac{P_1V_1}{T_1}}[/tex]
Thus, by suing the temperatures in Kelvins, we can solve for the final volume as shown below:
[tex]V_2 =\frac{P_1V_1T_2}{T_1P_2}}\\\\V_2 =\frac{(760mmHg)(22.4L)(232K)}{(273K)(805mmHg)} \\\\V_2=18.0L[/tex]
Regards!
A mutation can cause which of the following in an organism?
1 Have no effect
2Be beneficial
3 Be harmful
6Causes a new trait
5 All of the above
Answer: 5 all of the above
Explanation:
A mutation can be a blessing or a curse. It can also have no effect on the person at all.
Hope this helps
A 50,000 g septic tank reading reports that methane gas bubbles are present with a concentration of 17 ppm
Answer:
[tex]m_{solute}=0.85g[/tex]
Explanation:
Hello there!
In this case, according to the given information for the parts per million of methane in this solution, it is possible for us to first write the equation for this unit of concentration as shown below:
[tex]ppm=\frac{m_{solute}}{m_{solvent}} *1x10^6[/tex]
In such a way, since the septic tank has a mass of 50,000 g, the mass of methane into it is calculated as shown below:
[tex]m_{solute}=\frac{ppm*m_{solvent}}{1x10^6}[/tex]
Now, we plug in the numbers to obtain:
[tex]m_{solute}=\frac{17*50000g}{1x10^6}\\\\m_{solute}=0.85g[/tex]
Regards!
beta-plus decay sodium protons and neutrons
Answer:
(β-decay) is a type of radioactive decay in which a beta particle (fast energetic electron or positron) is emitted from an atomic nucleus, transforming the original nuclide to an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted into a neutron by the emission of a positron with a neutrino in so-called positron emission.
Explanation:
Answer:
Beta decay occurs when, in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other. ... In beta plus decay, a proton decays into a neutron, a positron, and a neutrino: p Æ n + e+ +n.
Explanation:
Two groups of students were given the same test. One group of students studied for 2 hours and the other group of students did not study at all. The group of students who studied achieved higher grades on the test. What is the DEPENDENT variable?
Answer:
Grade achieved is the dependent variable in the study.
Explanation:
A variable in any research or study is any property, characteristic, number, or a quantity which shows variability or change in its value i.e. it increases or decreases over time, depending on the treatment conditions.
There are two types of variables: Dependent variable and Independent variable.
An independent variable does not depent on any factor for its value or result, rather, a change units value brings about a change in the dependent variable.
A dependent variable is the variable which depends on some factor which the researcher controls. Any change made on the factor by the researcher would bring about a change on the dependent variable.
For example, in the given example above, studying habit affects academic performance. If a student studies more, his/her academic performance will improve as they will achieve higher grades. On the other hand, if a student fails to study, their academic performance will not show any improvement when compared to the group of students who studied. Thus, grade improvement depends on studying habit.
Therefore, grade obtained is the dependent variable in the study.
Giving Bainliest!!!!!
In 2-3 sentences, describe the basic properties of waves including frequency, amplitude, wavelength, and speed.
Answer:
frequency: This is the number of oscillations in one second or number of complete wavelengths produced in one second.Amplitude: This is the maximum displacement of a particle from its mean position.Wavelength: This is the distance between one crest and another or one trough and another.Speed: This is the distance a wave travels in a given amount of time.What is the oil refining process?
Answer:
"the chemical engineering processes and other facilities used in petroleum refineries to transform crude oil into useful products such as liquefied petroleum gas, gasoline or petrol, kerosene, jet fuel, diesel oil and fuel oils"
-wikipedia
Explanation:
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
An oil refinery or petroleum refinery is an industrial process plant where crude oil is transformed and refined into useful products such as petroleum naphtha, gasoline, diesel fuel, asphalt base, heating oil, kerosene, liquefied petroleum gas, jet fuel and fuel oils.
Thanks Hope it helps.Why do you think evolution is important?
one of many cells in the retina of the eye that responds to low light. VOCABULARY
Answer:
I hope this helps you!
Explanation:
The retina is the back part of the eye that contains the cells that respond to light. These specialized cells are called photoreceptors. ... The rods are most sensitive to light and dark changes, shape and movement and contain only one type of light-sensitive pigment. Rods are not good for color vision.
The retina is the back thing of the eye that has the cells that respond to the light. These specialized cells are known as photoreceptors.
Why is this conveyor important for Earth?
Answer:
.
Explanation:
Answer:
The great ocean conveyor plays a highly significant part in the climate of the planet. It transports heat to the Polar Regions, for example. In doing so, the amount of ice that can be formed in these regions is limited.
What are the two kinds of ways matter changes?
Which is more likely to melt a cup of ice - a spoonful of boiling water, or a cup of room-temperature
Answer:
boiling water
Explanation:
its hotter
Which statement best explains what causes the phase change from solid ice to liquid water?
Answer:
The melting point is the temperature at which a solid changes into a liquid. The melting point of a solid is the same as the freezing point of the liquid. At that temperature, the solid and liquid states of the substance are in equilibrium. For water, this equilibrium occurs at 0°C.
Explanation:
Answer: Heat or pressure causes the phase change from solid ice to liquid water.
Balance the following chemical equation by providing the correct coefficients
Answer:
2FeBr₃ + 3Na₂S → 1Fe₂S₃ + 6NaBr
Explanation:
SOLUTION :-
Balance the equation by hit & trial method , and you'll get the answer :-
2FeBr₃ + 3Na₂S → 1Fe₂S₃ + 6NaBr
VERIFICATION :-
In the reactant side of the equation :-
Number of Fe atoms = 2×1 = 2Number of Br atoms = 2×3 = 6Number of Na atoms = 3×2 = 6Number of S atoms = 3×1 = 3In the product side of the equation :-
Number of Fe atoms = 1×2 = 2Number of S atoms = 1×3 = 3Number of Na atoms = 6×1 = 6Number of Br atoms = 6×1 = 6Number of atoms of all elements are same in both reactant & product side of the equation. Hence , the equation is balanced.
What does the group number of an element tell you about the electrons?
Answer:
Explanation:
The group number of an element tells about the total number of electrons present in the valence shell or orbit of an atom.
which organic compound has 4 carbon atoms with at least one triple bond?
Answer:
butene
Explanation:
What is the role of the producer in any food chain?
Question 1 options:
Producers turn light energy into food energy
Producers make the food that consumers eat
Without producers, consumers would starve
All of these answers are correct
Answer:
All of these answers are correct.
Explanation:
They are all correct because producers make their food(energy) through photosynthesis, they provide food to herbivores and therefore the rest of the food chain, and without them, the food chain would collapse and all the consumers would starve.
(C) The silver carp is another species native to Asia that was introduced to aquaculture operations and sewage treatment ponds in the Mississippi River valley to control excess algae
accumulation. The species escaped from these operations into the Mississippi River and its tributaries and has the potential to invade the Great Lakes. Scientists are concerned that this
species is having severe negative impacts on these areas.
() Propose a potential solution, other than physically removing the carp from the rivers, to manage the problem of the invasive silver carp in the United States.
Answer:
Introducing predator of silver carp or an invasive species that can feed upon silver carp
Explanation:
The solution is attached
WILL GIVE BRANLIEST!!! Methane, CH4 is a __ (polar, nonpolar) molecule. In a molecule of methane, the primary intermolecular forces are ___ (London dispersion forces, dipole dipole forces, hydrogen forces, hydrogen bonding)
Answer:
Nonpolar; London dispersion forces
Explanation:
why do solids not diffuse
Answer:
This is because of diffusion , the movement of particles from an area of high concentration to an area of low concentration. ... This means that diffusion does not happen in solids – the particles in a solid can only vibrate and cannot move from place to place.
Answer:
Solids cannot diffuse each other because they are tightly packed and they are rigid and do not have fluidity.
Does gold have high lustre?
do we need nuclear energy to stop climate change?
Answer:
Hey mate......
Explanation:
This is ur answer.....
To combat climate change, the world must rapidly reduce its dependency on fossil fuels to reduce greenhouse gas emissions. Nuclear energy is low-carbon and can be deployed on a large scale in the time frame required, supplying the world with clean and affordable electricity.
Hope it helps!
Brainliest pls!
Follow me! :)