Which of the following is not a benefit of stressing

a. Poor circulation

b. Increase speed and power

c.Increased flexibility

d. Minimized change injuries

A hunter on level ground fires a bullet at an angle of 10 degrees above the horizontal and simultaneously dropping another bullet from the level of rifle, then the bullet that will hit the ground first is : a.) the dropped one.

Projectile motion is a form of motion experienced by an object that is projected in a gravitational field, such as from Earth's surface, and then moves along a curved path under the action of gravity.

The motion of an object thrown or projected into the air, subject to only the acceleration of gravity is called projectile motion.

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Answer:

Sound

Amplitude Wave

Pitch

Strenght

Explanation:

Your brain sends electrical impulses to the remainder of your body through your nerves, which act as cables.

CT or MRI scans can check for cancers, herniated discs, pinched (compressed) nerves, blood vessel abnormalities, and other conditions affecting the bones and blood vessels. testing of nerve function. Your muscles' electrical activity is captured by electromyography (EMG), which can identify nerve damage.

Your surgeon has two options for nerve repair: either remove the injured portion & reconnect healthy nerve ends, or implant a stretch of nerve from another area of your body (nerve graft). Your nerves can regrow with the aid of these therapies.

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Thermal energy from the solar rays heats the black paper. Through conduction, it warms the air in the box's. The warm air circulates inside the box due to convection, preventing it from escaping.

Researchers at the UC San Diego Jacobs School of Engineering found that solar panels significantly reduced the amount of heat that reached roofs, keeping them 5 degrees cooler than roof areas that were directly exposed to sunshine.

Installing solar panels on your home is worthwhile if you reside in a region with high energy costs, a sufficient solar rating, and if you have the initial financial means to do so.

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If the distance between the masses is cut by 1/4, the new force will become 16 times the old force.

The force experienced by the two masses is determined by applying Newton's law of universal gravitation.

F = Gm1m2 /r²

where;

when the distance between the objects becomes 1/4, the new force between the object becomes;

F = Gm1m2 /(1/4 r)²

F = Gm1m2 /(1/16)r²

F = 16 [  Gm1m2 /r² ]

F (new) = 16 (Gm1m2 /r² )

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Answer: GPE = MGH

Explanation:

M = Mass

G = Gravitational acceleration(9.8m/s^2 on Earth)

H = Height

Answer:

GPE=mgh

Explanation:

m - mass

g - gravitational force

h - height

Answer:

positive delta H (enthalpy/heat change)

temperatures drop

Explanation:

eg water changing state to ice is an endothermic reaction

Answer:

Some signs that an endothermic reaction is taking place are if:

- the container holding the reaction feels cold to the touch

- the change in enthalpy is positive

- the total heat of formation is positive

Changes;

Volume of a gas

Shape of a liquid

Shape of a gas

Does not change;

Volume of a solid

Shape of a solid

Volume of a liquid

In our introductory science lessons, we must have leant that matter is any thing that has mass and occupy space. We know that matter can occur in three states of matter and these are the solid, liquid and gaseous stage of matter.

Now we know that a liquid has a definite volume but does not have a definite shape. The gas on the other hand does not have a definite shape and a definite volume. It takes the shape and the volume of the container where it is found.

A solid would always retain in itself, a definite shape and a definite volume. This is why the solid is not compressible but the liquid and the gas are compressible.

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The wavelength of earthquake that shakes you with frequency of 11.5 Hz and gets to another city 80 Km away in 12s is 579.72 m .

The Wavelength is defined as the distance between adjacent crests in  adjacent cycles of a waveform signal propagated along a wire .

the relation between velocity , wavelength and wavelength is :

v = λf  ;

simplifying we get ⇒ λ = v/f ;

we know that , v = d/t ;  by speed = distance × time ,

substituting , distance  = 80 Km = 80000 m, and

time taken  = 12s ;

So , v = 80000/12 = 6,666.7 m/s .

given that frequency(f) = 11.5 Hz ,

So , λ = v/f ⇒ 6,666.7/11.5

= 579.71304

≈ 579.72 m .

Therefore , the wavelength of the earthquake is 579.72 m .

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The chemical formula of the Mg²⁺ and PO₄³⁻ is Mg₃(PO₄)₂. Therefore, option (4) is correct.

A chemical formula provides information about the proportions of each element in a given chemical compound or molecule. The chemical formula includes chemical symbols, numbers (subscripts), and other symbols, such as dashes, plus (+) and minus (−) signs, commas, and brackets.

The chemical formula of a compound includes no words but can draw simple chemical structures. In chemistry, two kinds of formulas for any compound: empirical formula and molecular formula.

The charge on the Magnesium is +2 and the charge on the phosphate ion is -3.  Therefore, the formula of the compound magnesium phosphate is Mg₃(PO₄)₂.

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(a) The average pressure exerted by the person is 40,000 N/m².

(b) The average pressure exerted by the elephant is  295,000 N/m².

The average pressure exerted by the elephant is about 7 times greater than the average pressure exerted by the person.

The average pressure exerted by each is defined as the force per unit area.

Mathematically, the formula for average pressure is given as;

P = F/A

where;

P = W / A

where;

The average pressure exerted by the person is calculated as follows;

P = (640 N) / (0.016)

P = 40,000 N/m²

The average pressure exerted by the elephant is calculated as follows;

P = (4.13 x 10⁴ N) / (0.14)

P = 295,000 N/m²

Thus, the average pressure exerted by the elephant and the person depends on their weight and area of their shoes.

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Geothermal heat is the source of heat for most hot springs and geysers.

Geothermal heat, or heat that originates from deep within the Earth, heats hot springs. Water may come into touch with extremely hot rock heated by magma in volcanic zones. Hot springs in volcanically active areas may create superheated water that is so hot than immersion can be dangerous or fatal. The temperature of rocks within the Earth also rises with depth in non-volcanic regions; this temperature rise is known as the geothermal gradient. Water can generate hot springs if it percolates far enough through the crust, coming into contact with hot rocks along the way.

The most well-known geothermal feature is a geyser. Due to intricate interior plumbing, each geyser has distinct characteristics. In a location of volcanic activity, geysers often demand that vast volumes of groundwater fill subsurface cavities. These deep caverns' water is warmed by neighbouring magma. Suddenly, a portion of the water turns to steam and rapidly expands. An burst of heated air and steam forces the suspended in the water column violently out of the vent. Repeating this cycle is possible frequently. Yellowstone National Park contains Old Faithful, a geyser that has been erupting once in every 65 minutes for centuries.

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Static equilibrium means that all forces are equal, so to make this easiest you want to break F1 into it's horizontal and vertical components. As there are no other forces acting in the horizontal, we know the horizontal component of F1 is 40N.

Dynamic equilibrium is a state in which bodies are moving at a constant speed as opposed to static equilibrium, which is a state in which bodies are at rest (rectilinear motion). The total amount of forces exerted on them in both situations is zero.

When two forces are acting on an object that is in static equilibrium, it indicates that their sum is zero, which makes static equilibrium a useful analytical tool. You may create an equation to figure out the direction and strength of the unknown force if you know the direction and strength of one of the forces.

Thus, Static equilibrium means that all forces are equal, so to make this easiest you want to break F1 into it's horizontal and vertical components.

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It doesn't matter if you turn off the AC first or after you turn off the engine; someone once said that doing so would shock the system. It still stops abruptly whether it shuts off from the switch or the engine.

Turning it off can help you conserve gasoline and cut down on carbon dioxide emissions, unless you drive a classic automobile with a carburetor. Our research has shown that drivers can save fuel and cut pollutants by shutting down for periods as little as 10 seconds. Some drivers believe that idling burns less fuel than resuming.

More gasoline is used and more CO2 is released when an engine is left idle for more than 10 seconds (Figure 3). For passenger cars of various sizes, idling fuel consumption ranges from 0.2 to 0.5 gal/h and rises with idling speed. Driving causes the car to warm up more quickly than idle does.

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The discovery that many metals release electrons when exposed to light is known as the photoelectric effect.

Because it behaves like an impactor (one that preserves mechanical power) involving two particles, the photons of sunlight and the electrons of the metal, the photoelectric effect fits a particles theory of light.

Albert Einstein did, however, give his particles theory of light a boost in 1905. He noticed the photoelectric phenomenon, wherein ultraviolet light hitting a surface causes the surface to liberate electrons. By characterizing sight as a flow of photons, or energetic packets, Einstein was able to describe the response.

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Conduction is a heat transfer method. This heated antifreeze is circulated to the radiator via a water pump. Convection is the term for this method of thermal energy transfer.

Radiators are heat exchangers that transfer heat for cooling and heating from one medium to another. The majority of radiators are designed to function in vehicles, structures, and electronics.

A radiator aids in the engine's overheating removal. It is a component of the engine's cooling system, which also consists of a fan, hoses to circulate the coolant, a liquid coolant, and a thermostat to track the coolant temperature.

If you absolutely must continue driving, you can add water to the radiator to get you to your destination, even though it's best to add a 50/50 mix of coolant and water (or a pre-mixed coolant).

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More than 200 billion stars in our own Milky Way galaxy make up the combined luminosity of quasars, which can produce up to a thousand times as much energy. The sun is 27 trillion times fainter than the average quasar!

Although quasars are the most luminous objects in the known cosmos, they seem feeble when viewed from Earth yet are detectable at great distances. The brightest quasar in the sky is 3C 273, which is located in the Virgo constellation.

Therefore, while a quasar will produce more energy over the course of its extended life. The strength of gamma ray bursts is higher. They are mostly created as a result of energy released during a hypernova's gravitational collapse.

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The average speed of the object is calculated as 6 m/s, when distance travelled by object and time taken are given.

Average speed is calculated by dividing total distance that something has travelled by the total amount of time it took to cover that distance. Average speed measures the average rate of speed of a trip.

As we know, Velocity V = Distance / time

Distance travelled in first half, D1 = 20 m

Time taken in first half, T1 = 4 seconds

Distance travelled in second half, D2 = 16 m

Time taken in second half, T2 = 2 seconds

Average speed of an object = (D1+D2)/(T1+T2)

= 36 / 6

Average speed of object = 6 m/s

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Organisms make different proteins because of the gene recombination and genetics.

Siblings may inherit various features from their parents and from each other depending on the specific gene combinations that each seeds carries. The variance in silk inflexibility among spider seed is explained by random gene recombination.

The inflexibility of silk is another issue. This point is shared by all of Darwin's dinghy spiders (they all have spider silk with some flexibility), yet some spiders create silk that is more flexible than other spiders' silk. There are three levels of silk inflexibility - high, medium, and low.

The above explanation about the genetic recombination tells about why the organisms make different proteins.

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According to the given statement the energy is stored in Long solenoid is U = 2.14 × 10⁻⁶ J.

Energy is a crucial part of our everyday life although becoming an basic human need. The buildings that people have constructed are heated and cooled by energy. To raise a foot, get out of couch, or even simply walk and along main path, you need energy.

Briefing:

The diameter of the solenoid is given as 3cm or 0.03m.

The length of the solenoid is given as 12cm or 0.12m.

Current is given as 0.79A

The cross-sectional area of the solenoid is

A = πd²/4

A = π (0.03)²/4 = 0.000225m²

Inductance of the solenoid can be found out using the below formula,

L = μ₀ N² A/l

where, μ₀ is vacuum permeability

N is number of turns

A is cross-sectional area

l is length

L = μ₀ N² A/l

L = 4π × 10⁻⁷ * (150)² *0.000225/0.79 = 8.05 × 10⁻⁶ H

U = 1/2 L*i²

U = 0.5 * 8.05 × 10⁻⁶ * (0.73)²

U = 2.14 × 10⁻⁶ J

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Aluminum reacts vigorously and exothermically with copper chloride, the balanced chemical reaction becomes:

2Al + 3CuCl₂ → 2AlCl₃ + 3Cu

Considering that aluminium is a more active metal in the electrochemical series of metals than copper, it displaces copper from the bond. The result is the emission of gaseous hydrogen and red metallic copper. This reaction is quite intense and results in the production of heat.

The reaction between aluminium and copper(II) chloride is highly vigorous, as heat is generated, the reaction mixture becomes very hot, the blue hue owing to the Cu(II) ions fades, the aluminium foil disintegrates, a reddish brown solid emerges, and gas bubbles are released.

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The frequency of the wave is 10 hertz.

In physics, frequency is the number of waves that pass a fixed point in a unit of time as well as the number of cycles or vibrations that a body in periodic motion experiences in a unit of time.

After moving through a sequence of situations or locations and then returning to its initial position, a body in periodic motion is said to have experienced one cycle or one vibration.

For wave motion, it can be written that:

Velocity of wave = wavelength × frequency

Frequency = Velocity of wave/wavelength

Given that Velocity of wave = 0.5 m/s.

wavelength = 0.050 meter.

Hence, frequency of the wave = 0.5/0.050 hertz

= 10 hertz.

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The riders make 15.09 rev/min when they are subjected to a centripetal acceleration 1.65 times that due to gravity.

Given that,

Radius of circular path = 6.5 m

Let ω be the angular velocity of ride

Centripetal acceleration is given by ω²r

which should be equal to gravity 1.65* (g)

ω²r = 1.65* g

ω² = (1.65* g)/r

ω = √(1.65* g/r) = √(1.65* 9.81/ 6.5) = 1.58 rad/sec

We know that, 1 rad/sec = 9.55 rev/min

So, converting rad/sec to rev/min we have,

ω = 1.58* 9.55 = 15.09 rev/min

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It is 22.5 cm far the upright image from your face if it is 6 times larger, when radius of curvature is given.

Concave mirror has a reflective surface that is curved inward and is away from the light source and it reflects light inward to one focal point.

Given radius of curvature=54 cm

Focal length= r/2

= 54/2

=27 cm

v is the distance to the virtual image and u is the distance of the object in front of the mirror.

Given v = -6u

As we know that ; 1/f = 1/u +1/v

So now, 1/f = 1/u - 1/6u

= 5/6 u

∴ u = 5f/6= (5* 27)/6

u = 22.5 cm

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The heat required to completely melt the block of ice is 15.18 * [tex]10^{5}[/tex] J

The mass of ice = m = 4.6 kg

The Latent heat = [tex]L_{f}[/tex] = 3.3 *[tex]10^{5}[/tex] J/kg

Heat required to melt the ice =Q

[tex]Q = mL_{f}\\ Q = 4.6 * 3.3 * 10^{5} \\ Q =15.18 * 10^{5}J[/tex]

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Answer: 288.0 units.

Explanation: If the distance between two objects is halved, the gravitational force between them will be increased by a factor of 4. So if the original gravitational force between Objects 1 and 2 was 72.0 units, the new gravitational force will be 72.0 * 4 = 288.0 units.

Answer: If the distance separating Objects 1 and 2 is halved, then the new gravitational force will be 288.0 units.

Explanation:

The time needed for the elevator to lift the load is approximately 4.31 seconds.

Power is simply the amount of energy transferred per unit time.

It is expressed as;

P = W / t

Where P is power, W is work done and t is time.

Given the data in the question;

Plug the given values into the above formula and solve for t

P = W / t

P = W / t

t = W / P

t = 56000J / 13000J/s

t = 4.31 s

Therefore, the required time is 4.31 seconds.

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Answer:

299.39N

Explanation:

F=un

n=w=mg⇒ (65)(9.8)=637

0.47(637)= 299.39 N

*your teacher/prof may expect you to round to sig figs*

Groundwater originates from precipitation and snowmelt, which seeps into the surface of the Earth.

Most groundwater is derived as meteoric water from precipitation in the form of snow or rain. If it is not lost by transpiration, evaporation, or stream runoff, water from these sources generally infiltrates into the ground.

Initial amounts of water from precipitation onto dry soil are held very tightly as surface films and in the micropores of the particles of soil. At intermediate levels, water films cover the solid particles, but the air is still present in the voids of the soil. This region is called the zone of aeration or unsaturated zone, and the water present is known as vadose water. At lower depths and in presence of sufficient amounts of water, all such voids are filled to give a zone of saturation, the upper level of which is the water table. Water present in this zone of saturation is known as groundwater

Although a part of your question is incorrect, you might be referring to this question:

Groundwater originates from                 and snowmelt, which seeps into the surface of the Earth.

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Answer:

The net force would be zero

Explanation:

Since, F = m*a

So, if the speed is constant, similarly if we include direction the Velocity is constant and that means that acceleration is zero as acceleration itself is change in velocity per time so constant velocity and since,

a = (Vf - Vi)/change in time
a = 0

then
F = m*0

so F is also zero