If you touch the terminal of a battery, the small area of contact means that the skin resistance will be relatively large; 50 is a reasonable value. Part A What current will pass through your body if you touch the two terminals of a 9.0 battery with your two hands? Express your answer to two significant figures and include the appropriate units.

Mechanical energy is of two types,

1. Kinetic energy

2. Potential energy

When the girl is at the top of her jump, the speed of the girl becomes zero.

Thus, the kinetic energy of the girl at the top of her jump is,

where m is the mass of the girl and v is her speed,

Substituting the known values,

Thus, the kinetic energy of the girl is zero at the top of her jump.

The potential energy of the girl at the top of her jump is,

where g is the acceleration due to gravity and h is the height of the girl,

Thus, the potential energy of the girl at the maximum height is maximum.

Hence, the mechanical energy of the girl at the top is in potential energy form because her kinetic energy is zero at the top of her jump.

Respuesta: T2 = 131.04K

Explicación: Dado lo siguiente:

Presión, P1 = 1.5 atm = 1.5 × 760 = 1140 mmHg

Presión, P2 = 1.2 atm = 1.2 × 760 = 912 mmHg

Volumen, V1 = 500cm3 Volumen, V2 = 300cm3

Temperatura, T1 = 273K Temperatura, T2 =?

Usando la fórmula de gas combinada:

P1V1 / T1 = P2V2 / T2

Ingresando nuestros valores:

(1140 × 500) / 273 = (912 × 300) / T2

T2 × (1140 × 500) = 912 × 300 × 273

T2 = 74692800/570000 T2 = 131.04K

The term that describes weathering breaks down the rock. Weathering is the breakdown of rocks, soil, and other geological material under the influence of physical, chemical, or biological agents.

The term weathering refers to a variety of processes that wear away or weaken rocks over time. Weathering is classified into two categories: chemical and physical. Chemical weathering occurs when rock is chemically broken down by reactions with acid rain or other chemicals.

Physical weathering, on the other hand, occurs when rock is broken down into smaller pieces by water, wind, ice, or other forces that do not change the chemical composition of the rock. In conclusion, the term that describes weathering is breaking down the rock.

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Therefore, the velocity of the ball just before it hits the ground is approximately 22.1 m/s. Therefore, the closest value to this option is 21.0 m/s.

When a ball of mass 0.25 kg falls from a height of 50 m, we can calculate its velocity using the principle of conservation of energy. According to this principle, the sum of the potential and kinetic energy of an object remains constant.

Therefore, we can equate the potential energy at the initial height to the kinetic energy at the final velocity.Let's calculate the potential energy of the ball at the initial height

:Eg = mghEg = 0.25 kg × 9.81 m/s² × 50 m

Eg = 122.625 J

This is the energy that the ball has due to its position. As it falls, this energy is transformed into kinetic energy. At the moment the ball reaches the ground, all the potential energy has been transformed into kinetic energy

.Ek = 1/2mv²Ek = Egv² = 2Ek/mv = √(2Ek/m)

Let's plug in the values we obtained:Eg = 122.625 Jm = 0.25 kgv = √(2Ek/m)

We obtain:v = √(2 × 122.625 J / 0.25 kg)v = √(245.25 J/kg)v = 22.116 m/s

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The converse of the statement "No pilots are mechanics" is No mechanics are pilots.

Hence, the correct option is A.

The converse of a statement switches the subject and the predicate and negates both. In the original statement, the subject is "pilots" and the predicate is "mechanics."

The original statement states that there is no overlap between pilots and mechanics. In the converse statement, the subject becomes "mechanics" and the predicate becomes "pilots," and it still states that there is no overlap between the two groups.

Therefore, The converse of the statement "No pilots are mechanics" is No mechanics are pilots.

Hence, the correct option is A.

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The vertical shear is the rate of change of the wind speed with height. In this case, we are given the zonal (east-west) and meridional (north-south) wind speeds at a particular height.

To calculate the vertical shear, we need to know the difference in wind speed between two heights. Let's assume that the wind speeds are constant with height over a small layer of the atmosphere. We can then calculate the vertical shear as follows:

Vertical shear of zonal winds = (change in zonal wind speed) / (change in height)

Vertical shear of meridional winds = (change in meridional wind speed) / (change in height)

Since we don't have information about the change in height or wind speed over a particular height interval, we cannot calculate the vertical shear of the zonal or meridional winds in this case.

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Answer:

Explanation:

a. From the information provided in the question, the blue liquid is a solution. This is because a solution is a type of homogeneous mixture (that has an evenly distributed solute in a solvent) which is the reason the liquid was said to be blue (and not immiscible blue solid in a liquid) but after been exposed to heat became just a blue solid. Typically, a solution has a solute and a solvent (combined), the solute here is the blue solid while the solvent is the liquid that made the combination a liquid.

b. Since the dish containing the liquid was placed on a windowsill, it can be assumed that the dish was subjected to heat from the sun which caused the liquid (in the solution) to evaporate after exposure to the heat from the sun (over the weekend) leaving the blue solid solute (of the solution) to remain in the dish. This can be referred to as evaporation to dryness in separation techniques (if the goal was to intentionally separate the solid solute from the liquid solvent).

"Choice-C" is the answer.

Answer:

7.2 seconds

Explanation:

50=5

72=t, criss-cross, t=72 (5)/50

Answer:

free fall is any motion of a body where gravity is the only force acting upon it

Explanation:

Answer:  Freefall noun. The state of being in a motion affected by no acceleration (force) other than that provided by gravity. freefall noun. The state of falling with no interference from outside forces other than the air resistance (no open parachute, etc.) freefall noun. The state of worsening out of control.

Explanation:

The Momentum is the product of mass and velocity.

Momentum is a measure of an object's motion. It is defined as the product of an object's mass and its velocity. In physics, momentum is a conserved quantity, which means that the total momentum of a closed system remains constant unless acted upon by an external force.

Final momentum of Ax = 1 * 2 * cos 30 = 1.73 Kgm/s

Final momentum of Ay =  1 * 2 * sin 30 =1 Kg m/s

Final momentum of Bx = 1 * Vs * cos 30

Final momentum of By = 1 * Vy * sin 30

The velocity is then;

1 * 5 + 0 = (1 * 2) + (1 * vs)

5 = 2 + vs

Vs = 3 m/s

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Answer:

A runoff

Explanation: A runoff is when frozen water melts so if it falls down a mouantan there probably melting ice hope this helps :} pls give brainlest

John is hiking and notices a small stream of water flowing down the side of the mountain. In this John is experiencing runoff of the water cycle. Thus, the correct option is A.

Surface runoff is the flow of water which is occurring on the ground surface when there is excess rainwater, storm water, melt water, or other sources of water, which can no longer sufficiently rapidly infiltrate in the soil of the region.

Runoff occurs in the excessive rainwater and it saturates the ground surface. Rivers and lakes are the results of water runoff. There is some evaporation from the water runoff into the atmosphere however for the most part water in the rivers and lakes returns back to the oceans.

Therefore, the correct option is A.

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Answer: 4K1

Explanation:

This lamp's estimated current consumption is 8 amperes.

Electric current is the rate of charge (electron) passing in a conductor. The SI unit for electric current is the ampere. As current does not obey vector addition, it is a scalar quantity.

Given information:

amount of charge flowing through the lamp, Q = 28800 C;

The charge flow time was t = 1 hour = 3600 seconds.

Hence, the current passing through the bulb as a result.

I = Q/t

= 28800/3600 ampere,

= 8 ampere

Therefore, this lamp consumes 8 amperes of current.

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Given information: Reactive power of the load (Q) = 23.36 kVAR

Leading power factor (pf) = 0.857

Magnitude of the rms current (|irms|) = 16 A

We can start by using the following equations:

Apparent power (S) = |Vrms||Irms|

Average power (P) = |Irms|^2 * R

Reactive power (Q) = |Irms|^2 * X

Complex power (P + jQ) = S * pf

where:

|Vrms| is the magnitude of the rms voltage

R is the resistance of the equivalent load

X is the reactance of the equivalent load

From the given information, we can calculate the apparent power as:

S = |Vrms||Irms| = (16 A) * |Vrms|

To find the magnitude of the rms voltage, we can use the fact that the leading power factor implies that the load is capacitive, and use the equation:

pf = cos(arctan(-X/R))

where the negative sign is due to the fact that the load is capacitive. Solving for X/R, we get:

X/R = -tan(acos(pf)) = -tan(acos(0.857)) = -2.75

Using this value, we can solve for X and R as:

X = |Irms|^2 * X/R = (16 A)^2 * 23.36 kVAR / (-2.75) = -441.75 j kΩ

R = |Irms|^2 * R/X = (16 A)^2 * 0.857 / (-441.75 j kΩ) = 0.496 kΩ

Therefore, the equivalent load consists of a resistor of 0.496 kΩ and a capacitor of 441.75 μF, connected in series.

Finally, we can calculate the required values as follows:

Apparent power (S) = (16 A) * |Vrms|

= (16 A) * sqrt((0.496 kΩ)^2 + (441.75 μF)^2 * (2π * 60 Hz)^2)

= 4.913 kVA

Average power (P) = |Irms|^2 * R = (16 A)^2 * 0.496 kΩ = 126.98 W

Reactive power (Q) = |Irms|^2 * X = (16 A)^2 * (-441.75 j kΩ) = -113.12 kVAR

Complex power (P + jQ) = S * pf = 4.913 kVA * 0.857 = 4.208 + j 3.990 kVAR

Magnitude of the rms voltage (|Vrms|) = S / |Irms| = 4.913 kVA / 16 A = 307.1 V (approx.)

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Answer:

0

Explanation:

The displacement is zero since it goes in a full circle and ends up where it started.

For an organ pipe, the wavelength of the fundamental note is d. "Twice the length of the pipe".

The wavelength of the fundamental note produced by an organ pipe depends on the length of the pipe and the speed of sound in the medium. The speed of sound is a constant that depends on the temperature, pressure, and humidity of the medium. Therefore, the length of the pipe is the main factor that determines the wavelength of the fundamental note.

The fundamental note is the lowest frequency that can be produced by the pipe and is also known as the first harmonic. For an open pipe (one that is open at both ends), the wavelength of the fundamental note is twice the length of the pipe. This is because a sound wave that fits into the pipe must have a node (point of zero displacement) at each end. Therefore, the length of the pipe must be equal to half the wavelength of the fundamental note.

For a closed pipe (one that is closed at one end), the wavelength of the fundamental note is four times the length of the pipe. This is because the sound wave that fits into the pipe must have a node at the closed end and an antinode (point of maximum displacement) at the open end. Therefore, the length of the pipe must be equal to one-fourth the wavelength of the fundamental note.

In conclusion, for an organ pipe, the wavelength of the fundamental note is twice the length of the pipe for an open pipe and four times the length of the pipe for a closed pipe. Therefore, option (d) "Twice the length of the pipe" is the correct answer for an open pipe.

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A system of laws is held to a standard by fundamental law, also known as organic law.

The majority of state and federal constitutions are regarded as prime instances of basic law. A system of fundamental laws lays out the guiding principles upon which all other laws must be based.

This type of law is employed in a constitution to establish the fundamental categories of rights and obligations for both citizens and the government.

For instance, the US Constitution outlines some of the most important rights of US citizens while also granting the government both powers and constraints.

Therefore, A system of laws is held to a standard by fundamental law, also known as organic law.

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Answer:

Requirements to become an Osteologist

Explanation:

After completing the bachelor's degree, students should begin working towards a master's degree or Ph. D specializing in forensic anthropology. Forensic anthropology is closely related to osteology and it will help in the forensic work.

Pulsars, strongly magnetised, rotating neutron stars that emit electromagnetic radiation, do not emit visible light. Pulsars emit mostly radio waves, X-rays, and gamma rays. Pulsars don't emit visible light since their electromagnetic radiation beams aren't visible.

Pulsars are strongly magnetised, revolving neutron stars that release electromagnetic radiation in the form of radio waves. Pulsars mostly emit radio waves, but some emit X-rays and gamma rays. The pulsar's revolution generates high magnetic fields that accelerate charged particles and emit radiation.

Visible light has shorter wavelengths than radio waves and falls within a defined band of the electromagnetic spectrum. Pulsars can't generate visible light with their radio wave emission mechanisms. Thus, while pulsars are known for their radio wave pulses, they do not emit visible light pulses. Radio telescopes and other instruments that detect radio waves are used to observe pulsars.

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Complete Question :

None of the pulsars emit pulses of visible light because a. pulsars are to hot to emit visible light, b. pulsars contain black holes that won't let visible light escape, c. the gravitational field of a pulsar is so great that the visible light emitted is red shifted, d. pulsars are too far away for the visible light to be bright enough to be detected at Earth, e. A few pulsars do emit visible light pulses.

The moon appears larger when it rises than when it is high in the sky because its a deception contrasting it with objects not too far off.

The Moon deception is the name for this stunt our minds play on us. Despite what we see with our eyes, photographs demonstrate that the Moon is the same width near the horizon as when it is high in the sky. As a result, it's an illusion that comes from how our brains process visual information.

The moon just appears to be brilliant in the night sky since it is so near the earth and on the grounds that the trees, houses, and fields around you are so dim around evening time. In fact, the moon is one of the solar system's least reflective objects.

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There are some traits of successful entrepreneurs, these are as follows:

1. He should be a highly motivated towards the work.

2. He sholud be creative in nature. He should think out of box and develop some ideas for the problem.

3. He should have clear vision for the future.

4. He should be very versatile and ready to adapt any changes.

5. He should be ready to take some risk.

6. He should have the ability of decision making and leadership quality.

Answer:

10m/s^2

Explanation:

Newton's second law:

F=ma

100=10×a

a=10m/s^2

Part A: To calculate the magnitude of the current in the 30-ohm resistor in the figure, we need to apply Ohm's Law, which states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to its resistance.

The voltage across the resistor is given as 6 volts (from the battery) and the resistance of the resistor is 30 ohms. Therefore, the magnitude of the current can be calculated as: Current (I) = Voltage (V) / Resistance (R) = 6V / 30Ω = 0.2 Amperes. So, the magnitude of the current in the 30-ohm resistor is 0.2 Amperes. Part B: To determine the direction of the current, we need to apply Kirchhoff's Current Law (KCL), which states that the algebraic sum of the currents entering and leaving any node in a circuit must be zero. In the given circuit, we can see that the current flowing through the 30-ohm resistor is leaving the node and entering into the negative terminal of the battery. Therefore, the direction of the current in the 30-ohm resistor is from left to right.

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The electrical conductivity of the wire is 10^7 S/m (Siemens per meter).

To calculate the electrical conductivity, we can use the formula:

Electrical conductivity (σ) = 1 / (Resistance × Cross-sectional area / Length)

Given:

Length (L) = 20 cm = 0.2 m (since 1 cm = 0.01 m)

Cross-sectional area (A) = 2 × 10^(-3) cm^2 = 2 × 10^(-7) m^2

Resistance (R) = 0.2 Ω

Substituting these values into the formula, we get:

Electrical conductivity (σ) = 1 / (0.2 Ω × (2 × 10^(-7) m^2) / 0.2 m)

The unit of resistance cancels out, and we are left with:

σ = 1 / (\(2 \times 10^{(-7) }m^2\) / 0.2 m)

Simplifying further:

σ = 1 / (\(10^{(-7)}\) m)

To divide by a number in scientific notation, we can multiply by its reciprocal. Therefore:

σ =\(1 \times 10^7\) m^(-1)

Hence, the electrical conductivity of the wire is 10^7 S/m (Siemens per meter).

Electrical conductivity is a measure of a material's ability to conduct electric current. In this case, the wire's electrical conductivity is relatively high, indicating that it is a good conductor of electricity.

The value of \(10^7\)S/m suggests that the wire can easily carry current due to the presence of free charge carriers (e.g., electrons) that can move through the wire with minimal resistance.

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(a) The velocity of the object at time t is given by finding the derivative of y (t):

y(t) = -2t2 + t + 10dy(t)/dt

= -4t + 1

Therefore, the velocity of the object at time t is -4t + 1.

(b) The acceleration of the object at time t is given by finding the derivative of the velocity function:

dy(t)/dt = -4t + 1d2y(t)/dt2

= -4

Therefore, the acceleration of the object at time t is -4 m/s2.

(c) The ball hits the ground when y(t) = 0, so we can solve for t by setting -2t2 + t + 10 = 0 and using the quadratic formula:

t = (-b ±  (b2 - 4ac)) / (2a), where a = -2, b = 1, and c = 10.

Plugging these values into the formula, we get:

t = (-1 ±  (12 - 4(-2)(10))) / (2(-2)) = (1 ±  81) / 4

We take the negative root because the positive root corresponds to the ball reaching its maximum height before falling back down. Thus,

t = (1 - 81) / 4

= -2/4

= -0.5 s

To find the velocity of the ball at this time, we plug t = -0.5 into the velocity function we found in part

(a):v = -4t + 1

= -4(-0.5) + 1

= 3 m/s

Therefore, the velocity of the ball at the time it hits the ground is 3 m/s.

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Answer:

Minimum uniform acceleration in Km/hr² is 20,505.05 km/hr²

Explanation:

In other to determine the acceleration, we can use the formula below

acceleration = velocity/time

Time wasn't given in the question, hence we calculate for time using the parameters given and the formula below

Velocity= distance/time

time = distance/velocity

distance = 2000m ⇔ 2km

time = 2/203

time = 0.0099

Hence, we look for acceleration

which is

acceleration = 203/0.0099

= 20,505.05 km/hr² ⇔ 2.0 × 10⁴

To determine which subatomic particle has a longer lifespan, we compare the average lifetimes of the tau lepton and the neutral pion. The average lifetime of the tau lepton is 2.906 x 10^-12 seconds, and the average lifetime of the neutral pion is 8.4 x 10^-17 seconds.

Comparing these values, we can see that the average lifetime of the tau lepton (2.906 x 10^-12 seconds) is significantly longer than the average lifetime of the neutral pion (8.4 x 10^-17 seconds).

To calculate how many times longer the lifespan of the tau lepton is compared to the neutral pion, we divide the average lifetime of the tau lepton by the average lifetime of the neutral pion:

(2.906 x 10^-12 seconds) / (8.4 x 10^-17 seconds) = 3.453 x 10^4

Therefore, the tau lepton has a lifespan that is approximately 3.453 x 10^4 (34,530) times longer than the neutral pion.

Answer:

friction. or gravity both ofbthem .....................

..