Please select all Non-Locomtor movements.
Pull
Run
Bend
Leap
Answer:
(1) Pull
(2) Bend
Those two are Non-Locomotor movements while others are Locomotor movements.
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A pan of water is heated from 23°C to 78°C. What is the change in its temperature on the Kelvin and Fahrenheit scales?
The change in the temperature of the pan of water on the Kelvin and Fahrenheit scales is 328.15K and 131°F respectively.
Temperature ScaleTemperature scale is simply the methodology of calibrating the physical quantity of temperature.
There are 3 main temperature scales, namely; Celsius, Fahrenheit, and Kelvin.
The expression for conversion are;
Celecius to Kelvin : 0°C + 273.15 = 273.15KCelecius to Fahrenheit : (0°C × 9/5) + 32 = 32°FGiven the data in the question;
Initial temperature of pan I = 23°CFinal temperature of pan F = 78°CFirst we determine the change in temperature.
ΔT = Final temperature - Initial temperature
ΔT = 78°C - 23°C
ΔT = 55°C
The change in temperature on the Kelvin scale
ΔT = 55°C = 55°C + 273.15 = 328.15K
The change in temperature on the Fahrenheit scale
ΔT = 55°C = (55°C × 9/5) + 32 = 131°F
Therefore, the change in the temperature of the pan of water on the Kelvin and Fahrenheit scales is 328.15K and 131°F respectively.
the change in the temperature of the pan of water on the Kelvin and Fahrenheit scales is 328.15K and 131°F respectively.
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A car starts from rest and accelerates to 14 m/s in 2 seconds. What was its acceleration
Answer:
7m/s^2
Explanation:
using v=u+at
since the car started from rest, u=0 , v=14m/s t=2s
a =acceleration.
14=0+a×2
14=0+2a
14=2a
a= 14/2 =7
a=7m/s^2
Which gives you a frame of reference for your speed when you are riding a train?
Answer:
anything stationary
Explanation:
anything that is not moving outside the train like passing trees or the train's station is considered to be a frame reference.
how much work is done on a lamborghini car if a 3150 N force is exert to move it 75.5m to the side of the road?
Explanation:
....................
Answer: 237825J
Explanation: Workdone = force * distance
= 3150*75.5
= 237825J
There are pros and cons to both e-readers and paper books. Do you think the pros outweigh the cons more for modern electronic readers, or for good old-fashioned paper books? Maybe if simply comes down to personal preferences as opposed to rational decision-making. Which do you prefer? Which do you think is better? Explain.
Answer:
books are better
Explanation:
Personaly, I think books are better as you can pass them on for a long time and paper lasts longer thank a phpne or a tablet. Books also reduce E-waste as paper can be recycled and tablet and phone batteries die where as the only way a book can die is if it has been distroyed
If a gas has the same temperature throughout, which gas molecule has the highest average velocity?
Answer:
H2
Explanation:
The highest average velocity is H2.
I hope it helps! Have a great day!
Anygays-
What will happen if there is no oxygen for 2mins???
Without oxygen, there would not any fire and the combustion process in our vehicles would stop. Every mode of transport except electric would fail instantly. Planes flying high in the sky would fall on earth and millions of cars running on petrol and diesel would stop on the roads.
What is common to the terrestrial planets? A. equal rotational periods around the Sun B. thin crust and a dense iron core C. solid outer layer and an atmosphere D. a solid outer layer composed of rock and minerals
Answer:
I would say D. All terrestrial planets are made up of rock and minerals and the other planets are made up of that do not have a solid surface.
Answer D.
Explanation:
True or false Light refracts because the medium pulls on light particles, causing them to
speed up.
False or false Light refracts when it passes from one medium to a new medium at an angle.
Answer:
False
Explanation:
Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density).
A light ray moving from oil (n=1.38) into an unknown material. If the light is incident at 35 and refracts at 23, what is the index of refraction in the unknown material?
The index of refraction of the unknown material in which a ray of light is incident at 35° and refracted at 23° is 2.03
Snell's lawindex of refraction (n) = Sine i / Sine r
n = Sine i / Sine r
Where
i is the angle of incidence r is the angle of refraction How to determine the refractive indexFrom the question given above, the following data were obtained:
Index of refraction of oil (nₒ) = 1.38Angle of incidence (i) = 35°Angle of refraction (r) = 23°Index of refraction of unknown material (nᵣ) =?nₒSine i = nᵣSine r
1.38 × Sine 35 = nᵣ × Sine 23
Divide both side by Sine 23
nᵣ = (1.38 × Sine 35) / Sine 23
nᵣ = 2.03
Thus, the index of refraction of the unknown material is 2.03
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How does friction affect object acceleration down an incline?
Friction is the force that acts on the opposite side of direction of force, thus it manages to decelerate an object, so it acts upward along the plane
If a 10 kW device is used for 15 mins then the amount of energy transferred is
Answer:
9,000,000J
Explanation:
10kW is converted to Joules by multiplying 1000. Which is 10000W
15 minutes is converted to seconds, which is 900s
Energy transfer is Power(J) × Time(s)
so: 1000× 900
=9,000,000 J or 9000 kJ
A spring whose stiffness is 980 N/m has a relaxed length of 0. 50 m. If the length of the spring changes from 0. 25 m to 0. 81 m, what is the change in the potential energy of the spring
151.9j
Explanation:
PE=1/2kx^2
PE=1/2(980)(.50)= 245j
PE=(1/2)(980)(.81)= 396.9j
396.9- 245= 151.9j
"In billiards, the cue ball has a mass of .17 kg and the other balls have masses of .16 kg. The cue ball, traveling at 2.9 m/s, strikes the 9-ball, which is at rest. After this collision, the cue ball continues at 0.5 m/s. What is the velocity of the 9-ball after the collision?"
Provide the magnitude of the velocity of the 9-ball after the collision (number only).
Answer:
2.55 m/s
Explanation:
Conservatiopn of momentum (momentum = mv )
the momentum before = momentum after
.17(2.9) = .17(.5) + .16 v
v = 2.55 m/s
Almost every solid surface in the Solar System is covered with __________, most of which formed during a period of heavy bombardment. Group of answer choices
We can confirm that almost every solid surface in the Solar System is covered with craters.
Why are there so many craters?This is due to the chaotic nature of the way the planets, moons, asteroids, comets, etc formed during the early life of the universe and for many eons since then. As stated in the question, this was a time of heavy bombardment, meaning each of these objects was being pelted with debris from nearby collisions on a continuous basis.
Therefore, we can confirm that almost every solid surface in the Solar System is covered with craters.
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How does a machine, such as a ramp, help make work easier?
A machine can help decrease the input force and the output force.
A machine can help increase the input force and the output force.
A machine can help increase the input force and decrease the output force.
A machine can help decrease the input force and increase the output force.
Answer:
D
A machine can help decrease the input force and increase the output force.
Answer:
it'sD:)
Explanation:
describe why the bottom of a pot is painted black and the interior is painted silver
Explanation:
The bottom part of the cooking utensil or pan is painted black. The reason is that the black surface absorbs more heat and so the contents of utensil or pan get cooked rapidly if its bottom part is painted black.
Hence, by having black bottom and shiny inner surface we can utilise the maximum heat given to the utensil.
The average 8- to 18-year-old spends __________ per day on average in front of a screen doing very little to no physical activity. A. 0 hours B. 30 minutes C. 1 hour D. 3 hours or more Please select the best answer from the choices provided. A B C D
Answer:
D. 3 hours or more
Explanation:
The average 8- to 18-year-old spends at least D. 3 hours every day in front of a screen, performing little to no physical activity. This is because, instead of exercising and socializing with their peers, children and teenagers frequently talk, watch a lot of movies/shows, or play video games on their computers. Unfortunately, this is typically considerably more than three hours every day. Although some children still prefer physical activities over this, the bulk of the population does not.
Two moles of helium gas initially at 321 K
and 0.42 atm are compressed isothermally to
1.83 atm.
Find the final volume of the gas. Assume
that helium behaves as an ideal gas. The
universal gas constant is 8.31451 J/K·mol.
Answer in units of m^3
If the helium behaves as an ideal gas, its final volume is 0.13m³.
Ideal Gas Law
The ideal gas law states "that pressure multiplied by volume is equal to moles multiply by the universal gas constant multiply by temperature of gas. It is expressed;
PV = nRT
Where P is pressure, V is volume, n is the amount of substance, T is temperature and R is the ideal gas constant.
Given the data in the question;
Amount of helium gas; n = 2molTemperature T = 321KPressure P = 0.42atm = 42556.5PaUniversal gas constant R = 8.31451 J/K·mol = 8.31451 m³Pa/KmolVolume V = ?To determine the volume of the helium gas, we substitute our given values into the expression above.
PV = nRT
V = nRT / P
V = ( 2mol × 8.31451 m³Pa/Kmol × 321K ) / 42556.5Pa
V = 5337.91542m³Pa / 42556.5Pa
V = 0.13m³
Therefore, if the helium behaves as an ideal gas, its final volume is 0.13m³
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Blurry bright waves against a dark blue background. gina was summarizing what she read to her friends and shared this image, calling it a digital signal. is she correct in saying this? explain your answer.
Answer:
Gina is not correct, she is not using digital signals to share the information.
Explanation
Looking at the question carefully, the type of information shared by Gina is words (when she reads to her friends) and images that she shared with her friends later on. Therefore, neither of the information she shared is discrete(0 and 1) to represent information.
Hence, we can say that Gina is not correct, she is not using digital signals to share the information.
Explanation:
Answer:
The image shows a continuous signal and is not made of numbers, so this signal is an analog signal. Gina is not correct in her identification of the signal.
Explanation:
You are asked to make a drawing of a magnet showing its field lines. A magnet's field lines always
begin near the magnet's ______ and end near the ________
A. Center, center
B. North pole, South Pole
C. South pole, center.
D. South pole, north pole.
hogy
Answer:
B. North pole, south pole
If a car driver suddenly makes a sharp turn, the passenger slides to the side of the car because of
Your answer:
Answer:
Inertia
Explanation:
It is inertia that causes the passengers to move toward the right side of the car. As the car swerves to left, passengers' body continues their motion as hitherto and as such it causes the passengers to move toward the right side of the car.
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Answer:
inertia
Explanation:
A piece of machinery with a moment of inertia of 2.5 kg-m? rotates with a constant angular speed of 4.0
rad/s. A bolt loosens, causing a part of it to shift outward from the rotation axis, increasing the moment
of inertia by 1.0 kg-m². What would the new angular speed of the machinery be? (hint: Conservation
of momentum) 10 rad/s
For a piece of machinery with a moment of inertia of 2.5 kg-m, new angular speed is mathematically given as
wf= 2.857 rad/s
What would the new angular speed of the machinery be?Generally, the equation for the final angular speed is mathematically given as
wf = wi*(I1/I2)
Therefore
wf = 4.0*(2.5/3.5)
wf= 2.857 rad/s
In conclusion, the new angular speed
wf= 2.857 rad/s
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Does any substance exist that has particles with no motion? Explain your position
Answer:
solid
Explanation:
In a solid, particles are packed tightly together so they don't move much. The electrons of each atom are constantly in motion, so the atoms have a small vibration, but they are fixed in their position. Because of this, particles in a solid have very low kinetic energy.
What is the third step of the hydrogen fusion process? → e v energy → 2 energy → energy 6 2 → 2 energy 2v
Answer:
The third step is recombination of two Helium-3 into one nucleus of Helium with the emission of two protons.
Explanation:
hope it helps :3
34. Identify the bond in SO3.
a. covalent
b. ionic
c. metallic
d. metalloid
Answer:
The answer is A.) Covalent
Explanation:
They share a double covalent bond.
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5) Which of these explanations best describes how a gene is expressed to make a protein?
A) The instructions in DNA are used to produce an RNA molecule that is used to build a protein at the ribosome.
B) The DNA copies its entire genome into RNA, which is then broken into gene components that are translated at the ribosome.
The specific gene that codes for a protein leaves the nucleus of a cell and travels through the cytoplasm to the ribosome.
D) A specific gene is removed so that it can be copied and then transcribed into RNA, which is used to build the protein in the nucleus.
Answer:
I need to look at the first choice is D) A specific gene is removed so that it can be copied and than transcribed into RNA, which is used to build the protein in the nucleus.
Explanation:
I will give you a mark for brainly.
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Which of the following lists of elements is ordered by increasing number of valence electrons?
A.Li,C,O,F
B. F, O, N, C
C. O, S, Se, Te
D. Sr, Ca, Mg, Be
The list of elements with increasing number of valence electrons are Sr, Ca, Mg, Be.
What is valence electrons?Valence electrons are the electrons that is found at the outer shell of an atom which make the atom to form a chemical bond in which each atom involve contribute one or more valence electrons to form the bond.
Therefore, The list of elements with increasing number of valence electrons are Sr, Ca, Mg, Be.
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______________ is a type of construction where the main load-bearing elements are hung from suspension cables that are then suspended from vertical supports anchored into the ground or a riverbed. a. domino c. ferroconcrete b. cantilever d. suspension please select the best answer from the choices provided a b c d
The complete statement is "Suspension is a type of construction where the main load-bearing elements are hung from suspension cables that are then suspended from vertical supports anchored into the ground or a riverbed. "
What is suspension?Generally, A suspension speaks to the holding up of material by apply of another force against gravitational force.
In conclusion, Suspension is a type of construction where the main load-bearing elements are hung from suspension cables.
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