Someone help me please I need to pass this quiz , this is the only quiz that It making me fail this class !!!
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Slow twitch muscle Fibers
Can contract repeatedly
Only anaerobic sources
Both aerobic & anaerobic
Produce most force
Endurance activities
Fast contraction speed
Fatigue quickly
Only aerobic sources
Speed, strength, power
Fast twitch Type lla muscle Fibers
Only aerobic sources
Fast contraction speed
Speed, strength, power
Only anaerobic sources
Fatigue quickly
Endurance activities
Produce most force
Can contract repeatedly
Both aerobic & anaerobic
Fast twitch type llx muscle Fibers
Can contract repeatedly
Only anaerobic sources
Only aerobic sources
Both aerobic & anaerobic
Fast contraction speed
Produce most force
Fatigue quickly
Endurance activities
Speed, strength, power
Answer:
1. Endurance activities
Only aerobic source
2. Can contract repeatedly
Speed strength and power.
Both aerobic and anaerobic sources
3. Fast contraction speed
Only anaerobic sources
Produce most force
Fatigue quickly
Speed, strength and power
Explanation:
I hope this helps. Although, I'm about 80% sure of the answer.
what is meant by the resultant force acting on an object?
Answer:
The resultant force is the single force that would produce the same effect on an object as two or more forces that are applied to the object. To find the resultant force, first draw a free body diagram, which is a diagram that shows all the applied forces using arrows in the direction of each force.
Two charges lie on the x-axis, one at the origin and the other at 14.3m What is the potential (relative to infinity) due to these charges at a point at 7.1m measured from the origin on the x-axis?
Answer:
V = 2.52 10³ V
Explanation:
The electric potential for a point charge is
V = k ∑ [tex]\frac{q_i}{r_i}[/tex]
In this case the formula is
V = k ([tex]\frac{q_1}{r_1} + \frac{q_2}{r_2}[/tex])
distances are the absolute value
r₁ =√ (7.1 -0)² = 7.1 m
r₁ =√ (7.1 - 14.3)² = 7.2 m
we substitute
V = 9 10⁹ (q₁ / 7.1 + q₂ / 7.2)
we have two possibilities
* different charges
V = 9 10⁹ (q₁ / 7.1 + q₂ / 7.2)
* equal charges and same sign
q₁ = q₂ = q
V = 9 10⁹ q (1 / 7.1 + 1 / 7.2) = p 9 10⁹ 0.2797
V = 2.52 10⁹ q
if we assume a value of the charge, for example q = 1 10⁻⁶ c
V = 2.52 10⁹ 1 10⁻⁶
V = 2.52 10³ V
What can you infer about how traveling changed America? Support your inference with evidence from the text and your own knowledge. Please write your answer in complete sentences.
Answer:
America is a very large country, the fourth largest in the world by land area, and the third most populated. Due to its wider than long shape and its extension that reaches the Pacific and Atlantic oceans, we find distances of up to 2,734 miles, like the one between Miami and Seattle.
Due to this situation, in the past it was extremely difficult to connect the different regions of the nation with each other: there were not enough river channels to reach the entire country, and the distances to be covered by land were almost impossible to face, which made it even necessary the use of bioceanic passages like the Strait of Magellan to travel from the East Coast to the West Coast. Thus, with the development of different means of transport, such as railways and airplanes, or engineering developments, such as canals, travel times between the different points of our enormous nation were shortened, facilitating the interconnection of these regions with each other. and contributing to the construction of a more homogeneous national identity.
Device that transforms thermal energy to mechanical energy
Answer:
the device that transfer thermal energy into to mechanical energy is heat engine.
hope it helps.
Explanation:
heat engine transforms thermal energy to mechanical energy
hope it is helpful to you
an electric heater draws a current of 5 ampere from 220 volt supply.Calculate
(a) its resistance
(b) electrical energy consumed in kwh if it is used for 4 hours
[tex] \bf \underline{Given :-}[/tex]
[tex] \sf{• \: An \: electric \: heater \: draws \: a \: current \: of \: 5 \: ampere \: from \: 220 \: volt \: supply.}[/tex]
[tex] \\ [/tex]
[tex]\bf{ \underline{To \: Find:- }}[/tex]
[tex] \sf• \: ( a) \: lts \: resistance.[/tex]
[tex] \sf• \: (b) \: electrical \: energy \: consumed \: in \: kwh \: if \: it \: is \: used \: for \: 4 \: hours.[/tex]
[tex] \\ [/tex]
[tex]\huge\bf{ \underline{ Solution :-}}[/tex]
[tex] { \boxed{\bf{(a)}}}[/tex]
[tex] \sf• \: Current \: (I) = 5 \: A[/tex]
[tex] \sf• \: Voltage \: (V) = 220 \: v[/tex]
[tex] \bf \red{\bigstar{\: Formula \: of \: Resistance \: (R) = \frac{V}{I} }}[/tex]
[tex] \sf \rightarrow R = \frac{220}{5} [/tex]
[tex] \sf \rightarrow R =44[/tex]
[tex] \bf{Hence, \: it's \: resistance \: is \: \: 44 \: Ω \: .}[/tex]
[tex] \\ \\ [/tex]
[tex] { \boxed{\bf{(b)}}}[/tex]
[tex] \sf• \: Current \: (I) = 5 \: A[/tex]
[tex] \sf• \: Voltage \: (V) = 220 \: v[/tex]
[tex] \bf \red{\bigstar{\: Formula \: of \: Electric \: Power \: (P) = IV }}[/tex]
[tex] \sf \rightarrow P = (5 \times 220) [/tex]
[tex] \sf \rightarrow P = 1100 \:[/tex]
[tex] \\ [/tex]
[tex] \sf \therefore \: P = 1100 \: watt[/tex]
[tex] \sf{• \: Time \: (t) = 4 \: hours }[/tex]
[tex] \bf \red{\bigstar{ \: Formula \: of \: Energy \: (W) = Pt}}[/tex]
[tex] \sf \rightarrow W= 1100 \times 4[/tex]
[tex] \sf \rightarrow W = 4400[/tex]
[tex] \sf \rightarrow W = \frac{4400}{1000} [/tex]
[tex] \sf \rightarrow W = 4.4[/tex]
[tex] \sf \therefore W = 4.4 \: kwh[/tex]
[tex] \bf{Hence, \: Electrical \: Energy \: is \: 4.4 \: kwh.}[/tex]
Answer is 4.4 kwh.
hope it helps you.
The __________ theory claims that emotions are innate reactions to stimuli in one’s surrounding environment. A.evolutionaryB.two-factorC.James-LangeD.Cannon-Bard
Answer:
A. evolutionary
Explanation:
i took one for the team
What is the distance from one peak to the next peak called?
Answer:
wavelength
Explanation:
Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.
Generally, the most commonly used electromagnetic wave technology in telecommunications is radio waves.
Radio waves can be defined as an electromagnetic wave that has its frequency ranging from 30 GHz to 300 GHz and its wavelength between 1mm and 3000m. Therefore, radio waves are a series of repetitive valleys and peaks that are typically characterized of having the longest wavelength in the electromagnetic spectrum.
Basically, as a result of radio waves having long wavelengths, they are mainly used in long-distance communications such as the carriage and transmission of data.
The distance from one peak to the next peak is called wavelength. This distance is also equal to the distance from one trough of a wave to another.
Mathematically, wavelength is calculated using this formula;
[tex] Wavelength = \frac {speed}{frequency} [/tex]
4. Explain What happens
to water when an object
hits it?
What are two DIFFERENT resources that can be found on the ocean floor?
In everyday situations, it does seem that a force is needed to keep an object, for example the shopping trolley, moving at a constant speed in a straight line.
Explain why.
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
An object at rest stays at rest and an object in motion stays in motion at a constant speed and direction unless acted upon by an unbalanced force. ... In the absence of any forces, no force is required to keep an object moving.
Thankshope it helpsIn everyday situations, it does seem that a force is needed to keep an object moving at a constant speed in a straight line because the resistive frictional force acted on every objects against their motion.
What is friction?The resistance provided by surfaces in touch as they move past one another is known as friction.
According to Newton's first law of motion, Unless forced to change its condition by an outside force, every object will continue to be at rest or moving uniformly in a straight line.
But in everyday situations, it does seem that a force is needed to keep an object, for example the shopping trolley, moving at a constant speed in a straight line because of the frictional resistive force acting opposite to the motion. That's why, a force of equal magnitude and opposite direction must be applied on the object, so that, resultant force becomes zero. It can at a constant speed in a straight line.
Learn more about friction here:
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Which refers to the chemical name of CO? carbon monoxide carbon oxide monocarbon monoxide monoxide carbon
Answer:
Carbon monoxide
Explanation:
Carbon refers to the "C" which stands for carbon. Monoxide refers to the single molecule of oxygen present in the substance.
Answer:
Carbon monoxide is the answer here
Explanation:
please solve this question
An ice cube is put into a heated pan. What will most likely happen to the molecules in the ice as the ice is heated
1. the molecules will begin to move slower
2.the molecules will begin to move faster
3. the molecules will begin to increase in density
4. the molecules will begin to condense in the air
Answer:
2 the molecules will move faster
Explanation:
the heat from the pay gives the molecules now energy causing the to spread out and move faster
Electromagnetic waves are
O
A. forms of matter.
O
B. forms of space.
O
C. longitudinal waves.
O
D. transverse waves.
what is relative density
Which of these is NOT used to create a simple electromagnet?
Battery
Light bulb
Copper wire
battery
Explanation:
Electromagnets can be created by wrapping a wire around an iron nail and running current through the wire. The electric field in the wire coil creates a magnetic field around the nail. In some cases, the nail will remain magnetised even when removed from within the wire coil
Answer:
Light Bulb
Explanation:
I did the quiz and i got it right
Explain the difference between objects that are sources of light and objects that reflect light
Answer:
sun is the main source while the other object reflect light on the sun
Explanation:
nasa libro yans
The initial speed of a dropped ball is 0 m/s after 2 seconds the ball travels at a speed of 20 m/s what is the acceleration of the ball ?
Answer:
Please find attached file
Explanation:
The rate of change of velocity with respect to time is known as acceleration. The acceleration of the ball will be 10m/s.
What is acceleration?The rate of change of velocity with respect to time is known as acceleration. According to Newton's second law, the eventual effect of all forces applied to a body is its acceleration.
The pace at which a body's velocity varies is represented by acceleration, which is a vector quantity.
The given data in the problem is given by ;
u is the initial speed of ball = 0 m/sec
v is the final speed of the ball= 10 m/sec
t is the time interval= 2 second
a is the acceleration of ball=? m/sec²
The formula for acceleration is;
[tex]\rm a=\frac{(v-u)}{t} \\\\ \rm a=\frac{(20-0)}{2} \\\\\rm a=10\ m/sec^2[/tex]
Hence the acceleration of the ball will be 10m/s².
To learn more about the acceleration refer to the link;
https://brainly.com/question/2437624
why is the time every 15° eastward one hour ahead?..
Explanation:
The reason time zones are 15 degrees wide is because there are 24 hours and 360/24 = 15. As you move east by 15 degrees the sun’s position in the sky changes relative to us and it looks an hour later in the day, so we advance our clocks to match the sun’s position.
So every 15° eastward one hour ahead.
Giving 12 points for this question.
A gas is put into a closed container. The container and the gas inside it are heated. What will happen to the pressure inside the container?
Answer:
Explanation:
Plug
CAN SOMEONE TELL ME THE answer for this ?
Answer:
b. light from earth is reflected by the moon surface
Answer:
C. Light from the sun is reflected by the moon's surface
Explanation:
In some parts the Light reaches, it gets lighted up and the parts where light does not reaches we can't see so we see the phrases of the moon .
What is the chemical name for N2O3? nitrogen trioxide dinitrogen trioxide pentanitrogenoxide nitrogen oxide
Answer: The chemical name for N2O3 is dinitrogen trioxide.
Explanation:
Nitrogen occurs chiefly as a free element in the air, making up about 78% by volume of the atmosphere. Nitrogen forms several oxides with oxygen. The formation of these oxides by the direct combination of nitrogen and oxygen required very high temperatures. Examples of oxides of Nitrogen includes:
--> Nitrogen (I) oxide: N20
--> Nitrogen (II) oxide: NO
--> Dinitrogen trioxide: N2O3.
When naming a chemical compound the number of elements in the compound is put under consideration using prefixes such as di (2), Tri(3), tetra(4), penta(5). From the chemical formula N2O3, there are 2 nitrogen atoms and with +3 oxidation state. Hence, the name DINITROGEN TRIOXIDE.
The chemical name of N₂O₃ is dinitrogen trioxide. The correct option is (b).
Two nitrogen atoms and three oxygen atoms make up the chemical molecule known as dinitrogen trioxide (N₂O₃). It is nitrogen oxide. Depending on the circumstances, dinitrogen trioxide exists as either a dark blue solid or a blue liquid.
Dinitrogen trioxide is an unstable and highly reactive substance. Nitric oxide (NO) and nitrogen dioxide (NO₂) gases are easily formed from it:
2 N₂O₃ → 2 NO₂ + O₂
Dinitrogen trioxide undergoes exothermic, or heat-producing, breakdown.
The prefixes "di-" and "tri-" denote the presence of two and three oxygen atoms, respectively, in the molecule. Therefore, dinitrogen trioxide is the name given to the substance N₂O₃.
Hence, the chemical name of N₂O₃ is dinitrogen trioxide. The correct option is (b).
To learn more about Dinitrogen trioxide, here:
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Can someone help me name the layers.
Answer:
A. Crust
B. Mantle
C. Outer Core
D. Inner Core
Explanation:
Answer:
A. Crust
B. mantle
C. outer core
D. inner core
Explanation:
because it is
Green light travels by what type of wave? (2 points) a Conductive b Electronic c Conducive d Electromagnetic 2
Answer:
Electromagnetic
Explanation:
Electromagnetic waves are those waves that do not require any material medium for propagation. They arise from a vibration of electric and magnetic fields.
The electromagnetic spectrum is comprised of many waves. One of the waves in the spectrum is visible light.
Visible light is in turn composed of seven different wavelengths of which green light is one of them. Hence, green light travels by electromagetic wave.
A bottle of water with mass 0.9 kg is left out in the sun, the radiation from the sun warms up the water bottle. If the water bottle was initially 10°C and the sun provided 120,000 J of thermal energy, calculate the final temperature of the water. Use C = 4182 j/kgK for the specific heat of water.
Answer:
Final temperature, T2 = 314.9 Kelvin
Explanation:
Given the following data:
Mass = 0.9kg
Initial temperature, T1 = 10°C to Kelvin = 10 + 273 = 283K
Quantity of heat = 120,000 J
Specific heat capacity = 4182 j/kgK
To find the final temperature;
Heat capacity is given by the formula;
[tex] Q = mcdt[/tex]
Where;
Q represents the heat capacity or quantity of heat.
m represents the mass of an object.
c represents the specific heat capacity of water.
dt represents the change in temperature.
Making dt the subject of formula, we have;
[tex] dt = \frac {Q}{mc} [/tex]
Substituting into the equation, we have;
[tex] dt = \frac {120000}{0.9*4182} [/tex]
[tex] dt = \frac {120000}{3763.8} [/tex]
dt = 31.9K
Now, the final temperature T2 is;
But, dt = T2 - T1
T2 = dt + T1
T2 = 31.9 + 283
T2 = 314.9 Kelvin
‼️‼️EMERGENCY ITS DUE SOON‼️‼️
A box weighing 2000N is sliding across a cement floor. The force pushing the box is 500N, and the coefficient of sliding friction between the box and the floor is 0.20. What is the acceleration of the box? 
Answer:
I couldn't send you this over comments so you could keep your points but this is from an article I found that breaks it down. I hope it helps. I'm sorry I've never taken physics but wanted to help you.
Explanation:
Example 1
A box weighing 2000. N is sliding across a cement floor. The force pushing the box is 500. N, and the coefficient of sliding friction between the box and the floor is 0.20. What is the acceleration of the box?
In this case, the box is sliding along the ground, so the normal force for the box is equal to its weight. Using the normal force and the coefficient of friction, we can find the frictional force. We can also find the mass of the box from its weight since we know the acceleration due to gravity. Then we can find the net force and the acceleration.
FF=μFN=(0.20)(2000. N)=400. N
mass of box=weightg=2000. N9.8 m/s2=204 kg
FNET=pushing force−frictional force=500. N−400. N=100. N
a=FNm=100. N204 kg=0.49 m/s2
This question involves the concepts of frictional force, Newton's Second Law of Motion, and acceleration.
The acceleration of the box is "0.49 m/s²".
According to Newton's Second Law of Motion:
[tex]Net\ Force = ma\\F - f = ma[/tex]
where,
F = Pushing force = 500 N
f = frictional force = μN
μ = coefficient of friction = 0.2
N = Normal Force = Weight = 2000 N
m = mass of box = [tex]\frac{N}{g}=\frac{2000\ N}{9.81\ m/s^2}=203.9\ kg[/tex]
a = acceleration = ?
Therefore,
[tex]500\ N -\mu N=(203.9\ kg)a\\\\\frac{500\ N - (0.2)(2000\ N)}{203.69\ kg}=a\\\\[/tex]
a = 0.49 m/s²
Learn more about Newton's Second Law of Motion here:
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The attached picture shows Newton's Second Law of Motion.
PLEASE HELP URGENT 10 points
Answer:
Both have the same amount. C.
Explanation:
As the train in the image moves to the right, which person hears the train horn at a lower pitch?
Explanation:
the persons in the train hears it at a lower pitch