NEED HELP!!! 13 POINTS!!!

Exercise builds muscles because it causes them to contract. If this is the case, would massage, which causes them to relax, also be a way of building muscle?
A.
No, massage does not have any health benefits.
B.
Yes, any working with muscles makes them stronger.
C.
Yes, massage begins when the muscles are very tight.
D.
No, the contraction is where building strength comes from.

2. Maleek wants to do some push-ups to build the eccentric muscles in his arms. What is the BEST advice for him?
A.
He needs to do as many as possible quickly since speed is the key.
B.
Be sure to hold the push-up at the top to get the maximum benefit.
C.
Do pull-ups since push-ups do not work the eccentric muscles in the arms.
D.
The lower he goes with his push-up, the more eccentric benefits he will get.

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A because it is the it is the it is the it is there ither iee dd

Answer:

force=1250kg * 30m/s+10

Explanation: it's a change in acceleration

Answer:

I would include extra insulation, a heating system, and some snug-fitting sweaters.

Explanation:

that way i won't get cold

Answer:

Reducing the use of non-renewable energy sources preserves that resource so it does not run out.

Explanation:

Non-renewable energy is limited. The word renewable means "not depleted when used." Meaning that there is ultimately an infinite amount of the source. If an energy source is NON-renewable it will eventually run out.

The displacement of ramp is 3.288 m and the ramp makes an angle of Ф = 8.7° with the horizontal.

Displacement [x] of an object is the length of the straight line joining the initial and final position of the object. Mathematically, if the velocity of the body is [v] m/s at an instant of time, then displacement can be written as-

v = dx /dt

dx = vdt

∫dx = ∫vdt

x = vt

Given is an inclined ramp that has a height of 0.50 m and a horizontal distance (run) of 3.25 m.

We can find the displacement of ramp using the Pythagoras theorem. The base will be equal to horizontal distance and height will be equal to vertical distance. The length of the hypotenuse will be equal to that of displacement. Therefore -

[h]² = [b]² + [p]²

[h]² = (0.5)² + (3.25)²

[h]² = 10.8125

[h] = √10.8125

[h] = 3.288 m

Direction can be calculated using the tangent function as follows.

tan Ф = [p]/[b]

tan Ф = (0.5)/(3.25)

Ф = tan⁻¹ (0.5)/(3.25)

Ф = 8.7°

Therefore, the displacement of ramp is 3.288 m and the ramp makes an angle of Ф = 8.7° with the horizontal.

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38 nm A waveform signal that is carried in space or down a wire has a wavelength,

A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles. This length is typically defined in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm).

The wavelength of the wave is the distance covered by it throughout a whole oscillation. A meter is the wavelength's SI unit (m).

*v=c/λ

v: 7.8 × 10^15 Hz c: 3.00*10^8 λ:?

7.8 × 10^15 Hz = 3.0010^8/λ

λ = 3.0010^8 m/s /7.8 × 10^15

λ = 3.8 10^-8

The calculated wavelength is in unit of meter. use the relationship between meter and nanometer to convert to the correct units.

3.8 10^-8 m (1nm/ 110^-9m )

= 38 nm

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(a) Flowchart: A condenser process flowchart is provided, illustrating the inputs and outputs of the humid air stream, O₂, N₂, and the condensed liquid water. (b) Total flow rate: The total flow rate of the feed stream entering the condenser is 5.296F mol/s, considering the flow rates of water vapor, O₂, and N₂. (c) Enthalpy and heat transfer: The enthalpy changes for water vapor and O₂ are calculated, resulting in a heat transfer of -0.072 kF kW, indicating heat removal by the condenser. the heat transferred by the condenser is -0.072 kF kW.

(a) Flowchart:

(b) Total flow rate of the feed stream:

The flow rate of N2 leaving the condenser is given as 5.18 mol/s.

The flow rate of water vapor entering the condenser is 58.0 mol% of F.

80% of the above water vapor is condensed and removed, leaving 20% remaining.

So, 20% of the above water vapor remaining in the humid air after condensation is 0.116F mol/s.

The flow rate of O2 is given as 8.8 mol% of F.

The total flow rate of the feed stream is the sum of the flow rates of water vapor, O2, and N2:

Total flow rate = Flow rate of water vapor + Flow rate of O2 + Flow rate of N2

              = 0.116F + 0.088F + 5.18

              = 5.296F mol/s

(c) Inlet-Outlet Enthalpy Table:

To calculate the heat transferred by the condenser, we need to determine the enthalpy changes for water vapor (H3 to H4) and O2 (H5).

The enthalpy change for water vapor can be calculated as:

ΔH_vap = Enthalpy of water vapor at 30°C - Enthalpy of water vapor at 150°C

      = [40.657 + 0.119 × (30 - 0)] - [40.657 + 0.119 × (150 - 0)]

      = -13.607 kJ/kmol

Enthalpy of water leaving the condenser (H4) can be calculated as:

H4 = Enthalpy of water vapor at 30°C = 40.657 kJ/kmol

Enthalpy of O2 leaving the condenser (H5) can be taken as:

H5 = Enthalpy of O2 at 30°C = 0.102 kJ/kmol

The heat transferred by the condenser (q) can be calculated as:

q = Total flow rate × ΔH

 = (5.296F mol/s) × (-13.607 kJ/kmol) × 10⁻³ kW/J

 = -0.072 kF kW (where kF is the constant conversion factor 10⁶)

Therefore, the heat transferred by the condenser is -0.072 kF kW.

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Answer:

Education is a human endeavor. it prepares the individual for life and for the future.

Explanation:

perhaps we can say that a "human endeavor" is one in which humans strive to achieve something of significance, or something of significance which only can be achieved via human intelligence.

Answer:

UUUUUUUUUUUUUUUUUUUUUUUHHHHHHHHHHH

Explanation:

If a human hair is approximately 50 micrometers in diameter, then the diameter of the human hair in the meters would be 5× 10 ⁻⁵ meters.

A recognized and accepted standard for measuring other amounts of the same sort is referred to as a unit of measurement. It is predetermined by custom or law.

As given in the problem, If a human hair is approximately 50 micrometers in diameter, then we have to find out the diameter of the human hair in the meters,

1 micrometer = 1 ×10⁻⁶ meters

50 micrometers = 50 × 10⁻⁶ meters

                           = 5× 10 ⁻⁵ meters

Thus. the diameter of the human hair would be  5× 10 ⁻⁵ meters.

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Answer:

product

Explanation: it's the product of chlorine and sodium

Answer:

y

Explanation:

Answer:

The coefficient of friction is dimensionless, which means it has no units. It is a scalar, which means that the direction of the force seems to have no effect upon that physical... This coefficient of friction seems to be unitless or we could say a dimensionless ratio of frictional force to normal reaction.

Answer: At several different levels, scientific awareness will enhance the quality of life, from the routine functioning of our daily lives to global issues. In energy, conservation, agriculture, health, transportation, communication, security, economics, recreation, and discovery, science informs public policy and personal decisions.

Explanation:

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A man who is travelling at 8.5 m/s on his bicycle will slow down to force -2.8 m/s when a car cuts in front of him, stopping in 3 seconds after travelling distance 13 m.

Acceleration in mechanics refers to the rate of change in a moving object's velocity with respect to time. accelerations as a vector quantity (in that they have magnitude and direction). An object's acceleration in relation to a force depends on the magnitude of the net force acting on it.

v = u + at

Inferring from the results, 0 = 8.5 Plus (-2.8)

t = -8.5/-2.8t t = 3.03s 3s

In light of the fact that v2 - u2 = 2 at this time, s = (v2 - u2)/2a s = (02 - (8.5)2)/2 (-2.8)

s = -72.25/-5.6\ss = 12.90 m ~ 13 m

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Answer:

The probability that she is correct on only two questions is 0.246

Explanation:

The probability of getting an answer correct = 1/5

The probability of getting only two questions correctly

By binomial trials, we have;

P(X = K) = \(\dbinom{n}{k}\times p^{k}\times \left (1 - p \right )^{n - k}\)

P(X = 2) = \(\dbinom{6}{2}\times \left (\dfrac{1}{5} \right )^{2}\times \left (1 - \dfrac{1}{5} \right )^{6 - 2}\)

= 15×256/15625 = 768/3125 = 0.246

Therefore, the probability that she is correct on only two questions = 0.246.

Prototype theory and the theory-based view of category representation are two different approaches to understanding how knowledge is represented in categories. While both theories provide insights into categorization, they differ in their underlying assumptions and emphasis on different aspects of category representation.

Prototype theory suggests that categories are represented by a central prototype or a typical example that captures the most characteristic features of the category.

According to this view, category membership is determined by comparing objects or concepts to the prototype and assessing their similarity. Prototype theory emphasizes the role of similarity and graded membership, allowing for flexibility and variability in category boundaries. It acknowledges that categories can have fuzzy boundaries and that members can differ in terms of typicality.

In contrast, the theory-based view of category representation posits that categories are defined by a set of defining features or rules. According to this view, category membership is determined by the presence or absence of these defining features. The theory-based view emphasizes the role of explicit rules and criteria for categorization. It assumes that categories have clear-cut boundaries and that membership is based on meeting specific criteria.

Both prototype theory and the theory-based view have strengths and weaknesses in explaining category representation. Prototype theory provides a more flexible and dynamic account of categorization, capturing the variation and context-dependency often observed in real-world categories. It accounts for typicality effects and the graded structure of categories. On the other hand, the theory-based view offers a more precise and rule-based approach to categorization, emphasizing the importance of defining features and criteria for membership.

The question of which theory better explains how knowledge is represented depends on the context and nature of the categories being considered. Prototype theory is often favored for capturing everyday categorization and capturing the cognitive flexibility involved in category formation. However, the theory-based view may be more suitable when dealing with categories that have clear criteria and strict boundaries, such as scientific categories.

In summary, both prototype theory and the theory-based view provide valuable insights into category representation. The choice of which theory better explains knowledge representation depends on the specific context and nature of the categories being studied, as both approaches have their strengths and limitations.

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Both caesium-137 and iodine-131 emit ionizing radiation, which can damage living tissue and increase the risk of cancer.

Isotopes are members of the same element's family but have variable numbers of neutrons despite having the same number of protons.

Iodine-131 and caesium-137 both produce ionizing radiation, which can harm living things and raise the risk of cancer.

Due to their varied half-lives and processes of decay, each isotope's danger has changed between 1986 and 2018 despite this.

Caesium-137 degrades gradually over time since it has a longer half-life of roughly 30 years. Iodine-131, on the other hand, degrades swiftly because of its significantly lower half-life of only around 8 days.

Thus, the risk has diminished over time as a result of radioactive decay.

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The distance the 2.0 N object will move, given that 35 J of energy is used to move it is 17.5 m

Work done is defined as the product of force and the distance moved in the direction of the force. Mathematically, it is expressed as:

Work done (Wd) = force (F) × distance (d)

Using the above formula, we can detertmine the distance the object will move as illustrated below:

Work done (Wd) = force (F) × distance (d)

35 = 2 × distance moved

Divide both sides by 2

Distance moved = 35 / 2

Distance moved = 17.5 m

Therefore, we can conclude from the calculation made above that the distance moved is 17.5 m

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Complete question:

You use 35 J of energy to move a 2.0 N object. How far did you move it?

Answer:

\(\boxed {\boxed {\sf 96 \ m/s}}\)

Explanation:

We are asked to find the final velocity of the car given the acceleration and time. We can use the following kinematics equation to calculate the final velocity.

\(v_f=v_i+(a \times t)\)

The car starts from rest, so the initial velocity is 0 meters per second. It accelerates a rate of 40 meters per square second over a period of time of 2.4 seconds.

Substitute the values into the formula.

\(v_f= 0 \ m/s + ( 40 \ m/s^2 \times2.4 \ s)\)

Solve inside the parentheses.

\(v_f= 0 \ m/s + (96 \ m/s)\)

Add.

\(v_f= 96 \ m/s\)

The final velocity of the car is 96 meters per second.

The expansion of a star during its red giant phase is primarily due to changes in its internal structure and processes. As the main-sequence star exhausts its hydrogen fuel, nuclear fusion ceases in the core. Consequently, the pressure in the core drops, and the star begins to collapse under its own gravity.

However, this collapse leads to an increase in temperature and pressure in the outer layers of the star. Eventually, the conditions become favorable for hydrogen fusion to occur in a shell surrounding the inert core. This hydrogen shell burning releases a tremendous amount of energy, causing the outer layers of the star to expand significantly.

At the same time, the core continues to contract, becoming denser and hotter. When it reaches a high enough temperature, helium fusion begins, converting helium into heavier elements like carbon and oxygen. This new source of energy production further contributes to the star's expansion.

The balance between gravity and pressure is thus altered during the red giant phase. The increased energy output from hydrogen shell burning and, eventually, helium fusion in the core causes the outer layers to expand against gravity. This results in the star swelling to a much larger size, creating the characteristic red giant appearance.

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Answer:

B

Explanation:

The equation is equal to the work done by the engine of the car will be  (change in kinetic energy of the car) - (friction energy) (distance).

From the work-energy theorem, It is stated that The net work done is equal to the change in the kinetic energy.

\(\rm W_{net}=K_f-K_i\)

The initial kinetic energy is \(\rm K_I\)

The final kinetic energy is \(\rm K_f\)

The equation equal to the work done by the engine of the car will be the subtraction of the change in kinetic energy of the car and the product of the frictional force and the distance.

\(\rm W_{net}=K_f-K_i - F_f \times d\)

Hence option B is correct.

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Answer:

(a). The speed is 115.28 m/s.

(b). The time is 94 min.

(c). The International Space Station travels 43202.400 km.

(d). Speed is scalar quantity.

Velocity is vector quantity.

Explanation:

Given that,

Top speed = 415 km/h

1 miles = 1609 m

(a). We need to calculate the speed in m/s

Using conversion of km/h to m/s

\(v=415\ km/h\)

\(v=415\times\dfrac{5}{18}\)

\(v=115.28\ m/s\)

(b). We need to calculate the distance from London to Edinburgh in km

Using conversion for distance

\(d=403\ miles\)

Distance in meter,

\(d=403\times1609\)

\(d=648427\ m\)

\(d=648.427\ km\)

We need to calculate the time

Using formula of time

\(t=\dfrac{d}{v}\)

Put the value into the formula

\(t=\dfrac{648.427}{415}\)

\(t=1.56\ h\)

\(t=1\ hours 34\ min\)

\(t= 94\ min\)

(c). Speed v' =7.66 km/s

v'=7660 m/s

In the time it takes the car to travel from London to Edinburgh,

We need to calculate the distance

Using formula of distance

\(d'=v'\times t\)

Put the value into the formula

\(d'=7660\times94\times60\)

\(d'=43202400\ m\)

\(d'=43202.400\ km\)

(d). Speed :

Speed is equal to the distance divided by time.

It is scalar quantity.

Velocity :

Velocity is equal to the displacement divided by time.

It is vector quantity.

Hence, (a). The speed is 115.28 m/s.

(b). The time is 94 min.

(c). The International Space Station travels 43202.400 km.

(d). Speed is scalar quantity.

Velocity is vector quantity.

Answer:

Her bike is using kinetic energy

B

Explanation:

The matrix is ​​the set of extracellular materials that will form a certain tissue. Through this there will be a physiological integration of the cells.

In the matrix there will be different macromolecules, mainly collagen, enzymes, glycoproteins, among others which will give support to the cells that will be immersed in the matrix. It will also be involved in the process of cell multiplication and cell movement, since it will allow communication between the different cells to coordinate their cell functions.

The extracellular matrix is ​​going to be composed, broadly speaking, of two components: interstitial matrix and the basal membrane. The interstitial matrix is ​​one that will be formed by polysaccharides and fibrous proteins that gives it the characteristic to be able to cushion the compressions to which it may be subjected.

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The notch sensitivity and fatigue stress concentration factors for the bar are calculated to determine the mean and alternating stresses and find the fatigue strength for different cycles.

To calculate the notch sensitivity and fatigue stress concentration factors, we need to consider the presence of the 10 mm hole in the center of the 30 mm side of the bar. The notch sensitivity factor quantifies the effect of the hole on the stress concentration, while the fatigue stress concentration factor determines the increase in stress due to cyclic loading.

The mean stress (σm) is the average of the minimum (F_min) and maximum (F_max) axial loads applied to the bar. The alternating stress (σa) is half the difference between F_max and F_min.

The fatigue strength for a certain number of cycles is determined by applying the appropriate factors to the ultimate tensile strength (S_Ut) or yield strength (S_y) of the material. The fatigue strength is typically given for a specified number of cycles, such as 100, 10,000, 100,000, or 1,000,000 cycles. The fatigue strength for infinite life refers to the stress level below which the material can withstand an unlimited number of cycles without failure.

To provide accurate values for the notch sensitivity, fatigue stress concentration factors, mean and alternating stresses, and fatigue strength for the specified number of cycles, further calculations and data specific to the material properties and geometry of the bar are required.

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Answer:

320 m/s

Explanation:

40 miles per second and 8 seconds makes 40 times 8

Answer:

1.6 ml

Explanation:

The energy conversion taking place as the blades of wind turbines rotate is the conversion of kinetic energy of the wind into mechanical energy, which is then converted into electrical energy by a generator

The blades of wind turbines convert the kinetic energy of the wind into mechanical energy, which is then converted into electrical energy by a generator. This process is known as wind energy conversion, where the kinetic energy of the wind is transformed into usable electricity. As the wind blows over the blades of the wind turbine, it causes the blades to rotate.

The rotation of the blades turns a rotor, which is connected to a shaft, and this shaft is connected to a generator. The rotation of the shaft in the generator creates electricity, which can then be stored or transmitted to power homes and businesses.

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ANSWER:

(a) 0.100 m^3

STEP-BY-STEP EXPLANATION:

We have that the force is equal to mass times gravity, therefore, we can calculate the mass, because the difference in force would be the volume of the stone.

Therefore

Now, we know that the density is equal to the quotient between the mass and the volume, therefore we can calculate the volume like this:

Therefore the volume of the piece is 0.100 cubic meters.