The what side of heart is what circuit and pumps oxygen poor blood to the what

The primary cause of injuries from motorcycle collisions is the exposed position of the rider. (Option B)

Motorcycle collisions often result in injuries due to the vulnerability of the rider's position. Unlike occupants of cars or other vehicles, motorcycle riders lack the protection of an enclosed vehicle, making them more susceptible to injuries. In the event of a collision, riders are directly exposed to external forces and can be thrown from the motorcycle, leading to severe injuries such as fractures, abrasions, head trauma, and spinal cord injuries.

While other factors like other vehicles hitting them or driving too fast can contribute to the severity of injuries, the exposed position of the rider remains the primary cause. Therefore, option B is the correct answer.

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Answer:

The answare is it ensures that any leakage of current to the metallic body of the appliance keeps its potential to that of the earth, and the user may not get a severe electric shock.

Answer:

Biodiversity is the biological variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.

Answer:

Bio means life

Explanation:

Biodiversity means life on earth.

a) The velocity function v(t) is given by v(t) = -100 + 10t, b) The acceleration function a(t) is given by a(t) = 10, c) The velocity is v(3) = -70 fps, and the acceleration is a(3) = 10 feet per second squared.

a) To find the velocity function, we take the derivative of the distance function s(t) with respect to time t. The derivative of s(t) = 80 - 100t + 5t^2 is v(t) = s'(t) = -100 + 10t. The units of velocity are feet per second.

b) The acceleration function is obtained by taking the derivative of the velocity function v(t). Since v(t) = -100 + 10t, the derivative of v(t) is a(t) = s"(t) = 10. The units of acceleration are feet per second squared.

c) To find the velocity and acceleration when t = 3 seconds, we substitute t = 3 into the respective functions. For velocity, v(3) = -100 + 10(3) = -70 feet per second. For acceleration, a(3) = 10 feet per second squared.

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Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 7 × 5

We have the final answer as

Hope this helps you

The values of all sub-parts have been obtained.

(1).  The maximum factored load the beam can withstand is 45.2 kN/m.

(2).  The moment resistance of the cross-section is 291735.65 Nm.

(3).  The factored moment demand is 27939.6 Nm

1) To draw the governing shear and bending moment diagram for the factored load, we need to first calculate the maximum factored load that the beam can withstand.

The maximum factored load on the beam is given by:

Dead Load = 20 kN/m + 15 kN

                   = 35 kN/m.

Live Load = 2 kN/m + 1 kN

                = 3 kN/m.

Total Factored Load = 1.2 x Dead Load + 1.6 x Live Load

                                  = 1.2 x 35 kN/m + 1.6 x 3 kN/m

                                  = 45.2 kN/m.

The maximum factored load the beam can withstand is 45.2 kN/m.

The shear force and bending moment diagrams for the given factored load can be obtained as shown below:

Shear Force Diagram:

Bending Moment Diagram:

2) To calculate the moment resistance of the cross-section, we can use the formula:

MR = σst A'(d - a/2) + 0.85f'c A''(d - a/2)

Where, σst = yield stress of tension steel [σst = fy / γst],

γst = safety factor for tension steel [γst = 1.15A']

A' = area of tension steel, [A'' = b(d - a)].

Where,

b = width of the beam [b = 600 mm],  

d = total height of the beam [d= 1000 mm],

a = effective depth of tension steel [a = 920 mm]

f'c = compressive strength of concrete [f'c = 25 MPa],

MR = σst A'(d - a/2) + 0.85f'c A''(d - a/2)

MR = (400 / 1.15) x 10 x (1000 - 920/2) + 0.85 x 25 x 590 x (1000 - 920/2)

MR = 291735.65 Nm

The moment resistance of the cross-section is 291735.65 Nm.

3) To check if this cross-section is adequately designed to resist the factored bending moment (LRFD), we need to calculate the factored moment demand and compare it with the moment resistance.

The factored moment demand is given by:

MF = ϕ x Mu

Where,ϕ = resistance factor = 0.9, Mu = factored bending moment

Mu = 1.2 x Dead Load x L2 / 8 + 1.6 x Live Load x L2 / 8 + 1.2 x (Dead Load + Live Load) x L2 / 2

   = 1.2 x 35 x 152 / 8 + 1.6 x 3 x 152 / 8 + 1.2 x 38 x 152 / 2

   = 31044 Nm

MF = ϕ x Mu

     = 0.9 x 31044

    = 27939.6 Nm

The factored moment demand is 27939.6 Nm, which is less than the moment resistance of the cross-section, i.e., 291735.65 Nm.

Therefore, this cross-section is adequately designed to resist the factored bending moment.

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Answer: macroscopic outputs

Explanation:

When fireworks explode, sound and light are produced. These are examples of macroscopic outputs. Because, explosion from fireworks is an exothermic process which releases massive heat energy to the surroundings.

Exothermic reaction are those which evolve heat energy to the surroundings.  The change in enthalpy of the reaction is negative here. Whereas, in an endothermic reaction energy is absorbed by the reactants.

Exothermic reactions sometimes results in massive explosion. The heat energy released to the surroundings from the fire works is macroscopic level.

The small scale process or quantity that cannot be measured using normal scales are called microscopic units. Therefore, the sound, light, and heat from the explosion all are macroscopic outputs.

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26Ns is  the impulse on a baseball that is hit with 50 n of force in a time of 0.52 s .

Define  force .

A force is an effect that changes, or accelerates, the motion of a mass-containing object. It is a vector quantity since it can be a push or a pull and always has magnitude and direction.

The integral of a force, F, across the time period it acts on is called an impulse. Impulse is a vector quantity because force is one as well. When an item receives an impulse, it experiences an equivalent vector change in its linear momentum and also in the direction that results.

Impulse ⇒ Force * time

I ⇒ 50*0.52

I ⇒ 26Ns

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Answer:

C

Explanation:

A- velocity=wavelength*frequency

velocity=1.0*1.6.......=1.6 m/s

B- wavelength=velocity/frequency

wavelength=1.6/3.2.....=0.5 meters

If Jupiter was about the size of a basketball, Venus would be about the size of a baseball.

If Jupiter was about the size of a basketball (approximately 9.4 inches or 24 centimeters in diameter), then a planet about the size of a baseball (approximately 2.9 inches or 7.4 centimeters in diameter) would be roughly 1/3 the diameter of Jupiter.

There are four planets in our solar system that are smaller than Jupiter and roughly 1/3 its diameter: Saturn, Uranus, Neptune, and Venus. Of these, Venus is the closest in size to a baseball, with a diameter of approximately 7,520 miles (12,104 kilometers), making it slightly larger than a baseball but still in the same size range.

So, if Jupiter was the size of a basketball, Venus would be the planet in our solar system that is closest in size to a baseball. Saturn, Uranus, and Neptune would be slightly larger, but still much smaller than Jupiter.

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Answer:

when a substance is heated, particles will gain more energy, and vibrate more.

Explanation:

Pls brainly I did my studys today! :D

The air pressure calculated using barometric formula at an elevation of 2000 meters is 0.068 MPa if the air pressure at sea level is 0.1 MPa.

Air pressure =  0.1 MPa

Elevation height = 2000 meters

The barometric formula is used to calculate the air pressure at an elevation of 2000 meters. Here the atmospheric pressure decreases when the elevation increases. The barometric formula is:

P = P₀ * exp(-M * g * h / (R * T))

P = pressure of altitude

P₀ = pressure at sea level

M = molar mass of Earth's atmoshpere = 0.02896 kg/mol

g =  acceleration due to gravity = 9.8 m/s²

h =  altitude height = 2000 m

R = ideal gas constant = 8.314 J/(mol·K)

T =  temperature of the air at a constant.

Substituting the values:

P = 0.1 MPa * exp(-0.02896 kg/mol * 9.8 m/s² * 2000 m / (8.314 J/(mol·K) * T))

T = 293K

P = 0.1 MPa * exp(-0.02896 kg/mol * 9.8 m/s² * 2000 m / (8.314 J/(mol·K) * 293 K))

P = 0.1 MPa * exp(0.2929808 / (8.314 J/(mol·K) * 293 K))

P =  0.1 MPa * exp(0.2929808 / 2436.002))

P  = 0.068 MPa

Therefore, we can conclude that the air pressure at an elevation of 2000 meters is 0.068 MPa.

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By using vector

a. the distance traveled is 12 kilometres

b. the resultant displacement is (7 i + 5 j) kilometres

We need to know about vectors to solve this problem. Vector has magnitude and also direction. Displacement is included in vector. It can be written as

s = sx i + sy j + sz k

where s is displacement, sx is displacement on x-axis, sy is displacement on y-axis and sz us displacement on z-axis.

From the question above, we know that

east = positive x

south = negative y

west = negative x

north = positive y

s1 = 7 j

s2 = 5 j

The distance traveled is

s = s1 + s2

s = 7 + 5

s = 12 kilometres

The resultant displacement is

s = s1 + s2

s = 7 i + 5 j

s = (7 i + 5 j) kilometres

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Answer:

\(31.7\:\mathrm{N}\)

Explanation:

We can use basic trig in a right triangle to solve this problem. Let the x component of the force be \(x\). We have the following equation:

\(\cos 24^{\circ}=\frac{x}{34.7},\\x=34.7\cos 24^{\circ}\approx \boxed{31.7}\)

When an electron in a hydrogen atom jumps from n = 3 to n = 2, the frequency of the emitted electromagnetic radiation is approximately 19.65 x 10^7 H

To calculate the frequency of electromagnetic radiation emitted when an electron in a hydrogen atom jumps from energy level n = 3 to n = 2, you can use the Rydberg formula:

1/λ = R_H × (1/n_final^2 - 1/n_initial^2)

where λ is the wavelength of the radiation, R_H is the Rydberg constant for hydrogen (approximately 1.097 x 10^7 m^-1), and n_final and n_initial are the final and initial energy levels, respectively.

To find the frequency (f) of the radiation, you can use the equation:

f = c / λ

where c is the speed of light in a vacuum (approximately 3.00 x 10^8 m/s).

Given:

n_final = 2

n_initial = 3

Let's calculate the frequency:

Using the Rydberg formula:

1/λ = R_H × (1/n_final^2 - 1/n_initial^2)

1/λ = 1.097 x 10^7 m^-1 × (1/2^2 - 1/3^2)

1/λ = 1.097 x 10^7 m^-1 ×(1/4 - 1/9)

Calculating the result:

1/λ = 1.097 x 10^7 m^-1 × (9/36 - 4/36)

1/λ = 1.097 x 10^7 m^-1 × (5/36)

1/λ = 0.1526 x 10^7 m^-1

Now, let's calculate the frequency using the equation f = c / λ:

f = c / λ

f = (3.00 x 10^8 m/s) / (0.1526 x 10^7 m^-1)

f = 19.65 x 10^7 Hz

Therefore, when an electron in a hydrogen atom jumps from n = 3 to n = 2, the frequency of the emitted electromagnetic radiation is approximately 19.65 x 10^7 Hz.

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The voltage is calculated using Ohm's Law, which states that voltage (V) equals current (I) multiplied by resistance (R). Therefore, V = I x R. Plugging in the given values, we get V = 0.1A x 1Ω = 0.1V. Therefore, the answer is A) 0.1V.

In this scenario, the resistance is 1 Ohm, and the current is 100 milliamps (mA). By multiplying these values, we can determine the voltage across the circuit. This is an example of using Ohm's Law to calculate the voltage in a circuit based on the resistance and current.

Given that the resistance is 1 Ohm and the current is 100 mA, the voltage is:

To find the voltage, we will use Ohm's Law: V = I × R

Where V is the voltage, I is the current, and R is the resistance.

Step 1: Convert current to Amps: 100 mA = 0.1 A (since 1 A = 1000 mA)
Step 2: Multiply current (in Amps) by resistance: V = 0.1 A × 1 Ohm
Step 3: Calculate voltage: V = 0.1 V

So, the correct answer is:
A) 0.1V

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Answer:

The average speed is 5.8 m/s

Explanation:

I just did it

Living in the Southeast for many people, both in cities and outside of cities, offers a distinct blend of cultural, geographical, and climatic characteristics.

In cities such as Atlanta, Charlotte, or Miami, residents experience the bustling energy of urban life with a range of amenities, diverse culinary scenes, and thriving cultural attractions. These cities often have vibrant downtown areas, modern infrastructure, and employment opportunities across various industries. Residents can enjoy a mix of entertainment options, including music festivals, sports events, and a vibrant nightlife. However, they may also encounter challenges such as traffic congestion and higher living costs in some areas. Outside of cities, the Southeast region boasts picturesque landscapes and a more relaxed pace of life. Residents can find charming small towns, close-knit communities, and a stronger connection to nature. The region offers stunning coastlines, scenic mountains, and lush forests, providing ample opportunities for outdoor activities like hiking, fishing, and beach outings. Residents often appreciate the Southern hospitality, a slower lifestyle, and a sense of community. Across the Southeast, the climate is generally characterized by hot summers and mild winters, with some areas prone to hurricanes and tropical storms. The region also showcases its rich history, diverse traditions, and a culinary heritage famous for dishes like barbecue, seafood, and soul food.

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At 12,000 feet above sea level, the temperature is 38°F if the air temperatures at sea level is 80°F.

Daniel Gabriel Fahrenheit, a scientist, initially suggested the temperature measure known as the Fahrenheit scale in 1724. (1686–1736).

The sign for the unit is indeed the letter °F, which stands for degrees Fahrenheit. There are several stories about how he first developed his scale, but according to the first publication, the lower defining point, 0 °F, was chosen as the freezing point of a brine solution that was formed by mixing water, snow, and ammonium chloride (a salt).

His best guess for the normal temperature of a person, which was initially put at 90 °F and later adjusted to 96 °F (around 2.6 °F),The other limit established was lower than the actual value (due to a subsequent revision of the scale).

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The energy that is transferred as heat if the process is adiabatic is 0J and the work is done on or by the gas is 344J.

Given the internal energy of a gas decreases by (ΔU) = 344J

In an adiabatic process, an ideal gas' internal energy reduces by an amount equal to the work the system performs.

ΔU = work done + heat exchange

There is no heat exchange in an adiabatic process according to first law of thermodynamics.

The gas is doing work since the process is adiabatic and the amount of energy transferred as heat will be Q= 0J. If there is no heat exchange during the operation, a change in internal energy equals work done.

Then the work done by the gas is (W) = 344J

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5) Average acceleration of race car will be 8 m/\(s^{2}\)

6) Average acceleration of race car will be -7 m/\(s^{2}\)

7 a) Average acceleration of bus will be - 8.33 m/\(s^{2}\)

7 b) If bus took twice as long to stop , acceleration will become - 4.166 m/\(s^{2}\)

8) Car's average acceleration will be 3 m/\(s^{2}\)

Average acceleration the rate of change in velocity; the change in velocity over time instantaneous acceleration acceleration at a specific point in time.

5) given

final velocity = 36 m/s

initial velocity = 4 m/s

time = 4 sec

average acceleration = (36 - 4) / 4 = 8 m/\(s^{2}\)

6) given

final velocity = 15 m/s

initial velocity = 36 m/s

time = 3 sec

average  acceleration = 15 - 36 / 3 = -21 / 3 = -7 m/\(s^{2}\)

7) a) given

final velocity = 0

initial velocity = 25 m/s

time = 3 sec

average acceleration = 0 - 25 / 3 = - 8.33 m/\(s^{2}\)

b) given

final velocity = 0

initial = 25 m/s

time = 3 * 2 = 6 sec

acceleration = -25 / 6 = - 4.166 m/\(s^{2}\)

8) given

initial velocity = -3 m/s

final velocity = 4.5 m/s

time = 2.5 sec

average acceleration = 4.5 - (-3) / 2.5 = 3 m/\(s^{2}\)

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Superman exerts a force of 23,651 Newtons on Lois Lane when catching her.

To calculate the force exerted by Superman on Lois Lane, we can use the formula:

Force = (mass of Lois) x (change in velocity) / time

Since Lois is falling at a terminal velocity of 61.9 m/s and Superman catches her and brings her to a stop, the change in velocity is 61.9 m/s (the initial velocity) minus 0 m/s (the final velocity), which equals 61.9 m/s.

Plugging in the values we know, we get:

Force = (55.1 kg) x (61.9 m/s) / 0.143 s

Simplifying this calculation.

Force = 23,651 N

Therefore, Superman exerts a force of 23,651 Newtons on Lois Lane when catching her.

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Work is the application of force to move an object. It is proportional to both the force applied to the object and the distance it moves.

Net force = 96 N.

Mass m = 8 kg

Initial velocity = 6 m/s

Acceleration a = 12 m/s²

Time = 3 s

v = u + at

v = 6 + (12)(3)

v = 42 m/s

Work done = (1/2)(8)(42² - 6²)

Work done = 6,912

s = ut + (1/2)(a)(t)²

s = (6)(3) + (1/2)(12)(3)²

s = 18 + 54

Displacement (s) = 72 m

Net force = Work done / Displacement

Net force = 6,912 / 72

Net force = 96 N

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The viscosity of the experimental lubricant is 83.63 cP. The calculated viscosity can be confirmed by comparing it with known viscosity values and conducting additional tests for validation.

To calculate the viscosity of the liquid, we can use the formula for terminal velocity in a viscous medium. The terminal velocity (V) is given by the equation V = (2/9)(g)(r^2)(ρb - ρl) / η, where g is the acceleration due to gravity, r is the radius of the ball, ρb is the density of the ball, ρl is the density of the liquid, and η is the viscosity of the liquid.

Rearranging the formula, we can solve for viscosity η, which gives us η = (2/9)(g)(r^2)(ρb - ρl) / V.

Plugging in the given values, we have g = 9.8 m/s^2, r = 0.001 m, ρb = 2120 kg/m^3 (converted from 2.12 g/cm³), ρl = 1060 kg/m^3 (converted from 1.06 g/cm³), and V = 0.0138 m/s (converted from 1.38 cm/s).

Substituting these values into the formula, we can calculate the viscosity in cP (centipoise) by multiplying the result by 1000, giving us 83.63 cP. To validate the calculated viscosity, it is important to compare it with known viscosity values for similar lubricants and conduct additional tests to ensure consistency and accuracy.

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Answer: No their are different chargers

No, Norbu cannot use the two thin copper wires to charge his mobile phone by inserting them directly into the socket.

Charging a mobile phone requires a proper charger and cable that are designed to regulate the flow of electricity and provide the appropriate voltage and current to the battery. Inserting copper wires directly into a socket is not only unsafe but also highly likely to result in electric shock, short-circuiting, overheating, or even causing a fire.

Using improper methods to charge electronic devices can lead to irreparable damage to the device, risk to personal safety, and damage to the electrical system. It's crucial to always use the correct and safe charging equipment provided by the manufacturer to ensure the safety of both the device and the user.

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