calculate the pressure exerted by a man having mass 50 kg standing on one feet having area 500cm2​

Answer:

Debido a la información de las neuronas sensoriales al cerebro.

Explicación:

Cuando toco una plancha caliente, extiendo la mano rápidamente porque las neuronas sensoriales presentes en la piel de nuestro cuerpo envían señales al sistema nervioso central, es decir, al cerebro. El cerebro toma decisiones de acuerdo con los estímulos y envía instrucciones a través de las neuronas motoras a los músculos para retirar las manos del hierro caliente a fin de evitar efectos nocivos en la piel debido al calor. El lóbulo frontal es una parte del cerebro que controla la personalidad, la toma de decisiones y el razonamiento.

Answer:

Resistance to the flow of electricity in wires and resistance to the flow of water in pipes are similar in several ways:

Both are affected by the size of the conductor: In both cases, the resistance to flow is affected by the size of the conductor. A larger diameter wire or pipe will offer less resistance to the flow of electricity or water than a smaller diameter one.

Both are affected by the length of the conductor: The resistance to flow also increases with the length of the conductor. A longer wire or pipe will offer more resistance to the flow of electricity or water than a shorter one.

Both are affected by the material of the conductor: Different materials have different resistances to flow. In electrical wires, metals are commonly used as they have low resistance. In pipes, materials such as copper, plastic, or steel may be used depending on the specific application.

Both can be reduced by minimizing obstructions: Resistance to flow can be reduced in both cases by minimizing obstructions in the path of the flow. In pipes, for example, the use of smooth inner walls and proper pipe bends can help reduce resistance. In electrical wires, minimizing the number of connections and using high-quality connections can help reduce resistance.

Overall, resistance to flow is a fundamental concept that applies to the flow of electricity and water, and the factors affecting resistance are similar in both cases.

Using the right-hand rule, the direction of the magnetic field can be determined based on the image. If you point your right thumb out of the screen in the direction of the current flow, your fingers will curl in the direction of the magnetic field.

As a result, arrow C in the figure depicts the direction of the magnetic field surrounding the bar magnet. The magnetic field lines form a loop from the magnet's north pole to its south pole, as depicted by the arrow.

The right-hand rule can be used to identify the direction of the magnetic field around a bar magnet. The right-hand rule is a convention for determining the direction of a magnetic field in the vicinity of a current-carrying wire, a moving charged particle, or a magnet.

In the case of a bar magnet, the magnetic field lines stretch in a loop from the north pole to the south pole, as seen in the illustration. You may use the right-hand rule to identify the direction of the magnetic field around the magnet by pointing your right thumb in the direction of the current flow (which, in this case, is out of the screen), and your fingers will curl in the direction of the magnetic field.

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Galileo's experiments primarily challenged Aristotle's ideas about the types of motion.

According to Aristotle, objects of different weights would fall at different speeds, with heavier objects falling faster. However, Galileo conducted experiments with inclined planes and rolling balls, showing that objects of different weights, when released from the same height, would reach the ground at the same time. This contradicted Aristotle's notion of natural motion and supported the concept of uniform acceleration due to gravity. Galileo's findings laid the foundation for the modern understanding of motion and led to the development of the principle of inertia, which states that objects will remain in their state of motion unless acted upon by an external force.

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The input power required for a mass flow rate of 60 kg/min is calculated to be 871.35 kW.

Given that,

Initial temperature T₁ = 295 K

Final temperature T₂ = 460 K

Initial pressure P₁ = 105 k pa

Final pressure P₂ = 700 k pa

The specific heat loss from the compressor Q = 15 kJ/kg

The mass flow rate m = 60 kg/min

Refer to the properties of element to determine the specific heat of helium.

Cp = 5.19 kJ/kg.K

Apply the energy balance equation for calculating the input power.

W - m Q = m h₁ - m h₂

W - m Q = m (h₁ - h₂)

W - m Q = m Cp (T₁ - T₂)

where,

W is the input power

h₁ and h₂ are the initial and final enthalpy

Placing the values in the above expression, we have,

W - 60 kg/min (1 min/60 sec) × (-15 kJ/kg) = 60 kg/min (1 min/60 sec) × 5.19 kJ/kg.K (295 K - 460 K)

W = -871.35 kJ.s (1kW/1kJ) = -871.35 kW

Thus, the input power = 871.35 kW.

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Answer:

do you have a picture we can see?

Answer:

165 kPa

Explanation:

Absolute pressure is:

P = Patm + ρgh

where Patm is the atmospheric pressure,

ρ is the density,

g is acceleration due to gravity,

and h is the depth.

P = 101,300 Pa + (1000 kg/m³) (9.8 m/s²) (6.50 m)

P = 165,000 Pa

P = 165 kPa

Explanation:

a part of the kinetic energy of the sun is converted into heat as it cuts the log of wood it is due to this heat that becomes worm .Thus, kinetic energy of such changes into heat

Answer:

Explanation:

I need help to marysol;)

Answer:

0.02N

Explanation:

According to Newton's 3rd Law of motion, the bee exerts the same force on the bowling ball as the bowling ball exerts the force on the bee.

We have that for the Question "A 60kg bowling ball collides with a 0.005kg bee with a force of 0.02N. The force the bee exerts is" it can be said that The force the bee exerts is

F=0.02N

From the question we are told

A 60kg bowling ball collides with a 0.005kg bee with a force of 0.02N. The force the bee exerts is

Generally the Newtons  equation for Motion  is mathematically given as

This law perceives two bodies who collide as having forces which are equal as the magnitudes in opposite directions

Therefore

V^2= 2as

Hence

The force the bee exerts is

F=0.02N

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Answer:

No the statement is incorrect.

Explanation:

Mathematically, force F experience of a charge particle of magnitude q in an uniform electric field E is given as

F = E/q

In uniform electric field is where the intensity of electric field remains same throughout. However, from the above equation it is clear that force experience by the charge particle also depends upon the magnitude of charge particle as well. So, with change in charge particles the force experienced by it also changes.

Answer:

1. The horizontal component of the velocity is approximately 271.89 m/s

The vertical component of the velocity is approximately 126.79 m/s

2. The time the bullet spends in the air is approximately 25.85 seconds

3. The maximum height reached by the bullet is approximately 819.35 meters

4. The horizontal distance is approximately 7028.36 meters

Explanation:

The initial velocity of the bullet = 300 m/s

The angle at which the bullet was fired, θ = 25° from the horizontal

1. The horizontal component of the velocity vₓ = The component of the velocity in the x-direction

vₓ = v × cos(θ)

Substituting gives;

vₓ = 300 × cos(25°) ≈ 271.89 m/s

The vertical component of the velocity \(u_y\) = The component of the velocity in the y-direction

\(v_y\) = v × sin(θ)

Substituting gives;

\(u_y\) = 300 × sin(25°) ≈ 126.79 m/s

2. The time the bullet takes to maximum height, t = 1/2 × The time the bullet spends in the air

The following is the relevant kinematic equation for the vertical motion of the bullet;

v = u - g × t

Where;

\(v_y\) = The final velocity vertical velocity = (0 at maximum height)

\(u_y\) = The initial vertical velocity ≈ 126.79 m/s

g = The acceleration due to gravity = 9.81 m/s²

t = The time in flight of the bullet

Substituting gives;

0 = 126.79 - 9.81 × t

t ≈ 126.79/9.81 ≈ 12.924 s

The time the bullet spends in the air = 2 × The time the bullet takes to maximum height

∴ The time the bullet spends in the air ≈ 2 × 12.924 ≈ 25.85

The time the bullet spends in the air ≈ 25.85 seconds

3. The maximum height reached is given from the following kinematic equation;

\(u_y\)² = 2 × g × h

Where;

h = The maximum height reached by the bullet

∴ h = \(u_y\)²/(2 × g)

h = 126.79²/(2 × 9.81) = 819.35

The maximum height reached by the bullet = h = 819.35 meters

4. The horizontal distance travelled by the bullet = Horizontal component of the velocity of the bullet × The time the bullet spends in the air

∴ The horizontal distance travelled by the bullet = 271.89 × 25.85 ≈ 7028.36

The horizontal distance travelled by the bullet ≈ 7028.36 meters.

Answer:

4 m/s

Explanation:

multiply m ang s para makuha yung speed ng isng object ....

The correct answers are up, down, into the screen, and out of the screen.

When a charge is moving at an angle of 90 degrees to a magnetic field, it experiences no magnetic force. When a charge is moving parallel or anti-parallel to a magnetic field, it does not experience magnetic force.

Check all that apply in the following list: UpDownLeftRightInto the screenOut of the screen

A magnetic field is a field created by an electrical charge in motion, such as an electron or a current through a wire. A magnetic field's direction is determined by the direction of the current, with north and south poles corresponding to the direction of the current.

When a charged particle travels through a magnetic field, it experiences a magnetic force.The charge moves and experiences no magnetic force when it is perpendicular to the magnetic field.

Therefore, the correct answers are up, down, into the screen, and out of the screen.

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Answer:

the range or the ball is 48.81 m

Explanation:

given;

Nicole throws a ball at 25 m/s at an angle of 60 degrees abound the horizontal.

find:

What is the range of the ball?

solution:

let Ф = 25°

Vo = 25 m/s

consider x-motion using time of fight: x = Vox * t

where x = R = range

t = 2 Voy

      g

R = Vo² sin (2Ф)

           g

plugin values into the formula:

R = (25)² sin (2*25)

               9.81

R = 48.81 m

therefore, the range or the ball is 48.81 m

4.8miliseconds broooo.

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Extra info related to the question :-

What is a rationlising factor ?

If the product of two irrational numbers is a rational number then each of the the two is rationalising factor of the other.

What is the purpose of rationilising the denominator ?

If the denominator of a fraction is irrational it is somewhat difficult to locate the fraction on number line. So, to make it easy we need to rationalise the denominator.

How to rationalise the denominator ?

1) Consider the denominator of the fraction.

2) Then multiply the numerator and denominator with rationalising factor of the denominator.

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A waveform is produced by plotting the magnetic moment change of the phase of a magnetic field over time. A waveform is essentially a visual representation of a signal's time-varying voltage, current, or power with respect to time.

Waveforms are found in a variety of applications, including music, radio and television broadcasting, and communication systems. In electrical engineering, a waveform is a visual representation of an electrical signal's changing values over time.

A waveform can depict the voltage, current, or other parameter of an electrical signal. A waveform's horizontal axis represents time, while the vertical axis represents the signal's amplitude. Waveforms can be periodic, non-periodic, or complex depending on the signal they represent. Waveforms are often displayed on an oscilloscope, a device that graphically displays the changing values of an electrical signal. An oscilloscope displays a waveform by deflecting a beam of electrons vertically and horizontally across a phosphorescent screen. The deflection is proportional to the input signal's voltage or current, which generates a trace on the screen.

In conclusion, A waveform is produced by plotting the magnetic moment change of the phase of a magnetic field over time.

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The part of the Sun's electromagnetic spectrum that has wavelengths between ultraviolet and infrared radiation is the visible light spectrum.

Visible light consists of wavelengths ranging approximately from 400 nanometers (nm) to 700 nm. This portion of the electromagnetic spectrum includes the colors that we can perceive with our eyes, such as red, orange, yellow, green, blue, indigo, and violet.

It is worth noting that ultraviolet (UV) radiation has shorter wavelengths than visible light, while infrared (IR) radiation has longer wavelengths. The visible light spectrum occupies the region between UV and IR and is responsible for the colors we see in our everyday lives.

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Answer:

\(KE=12,500J\)

Explanation:

The formula for kinetic energy is:

\(KE = \frac{1}{2}mv^2\)

We can plug in the given values into the equation:

\(KE = \frac{1}{2}*1000kg*(5m/s)^2\)

\(KE = 500kg*25m^2/s^2\)

\(KE=12,500J\)

Answer:

1. f=1T. where: f is the frequency of the wave in hertz. T is the period of the wave in seconds.

2. f=vλ where: f is the frequency of the wave in hertz. v is the velocity of the wave in meters per second. λ is the wavelength of the wave in meters

3. f=cλ

Explanation:

Answer:

D is the correct answer

Explanation:

solid is a new substance, and it's called a precipitate.

The precipitate formation is occurred when a solid forms out of mixing two liquids. Hence, precipitate formation is the correct option.

The given problem is based on the chemical reactions and substances formed due to the chemical reactions. The given question says that some solid substance forms out of mixing two liquid substances in a chemical reaction. Now, let us analyze the options:

Thus, we can conclude that precipitate formation is occurred when a solid forms out of mixing two liquids.

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TheThe  focal length of the double convex lens is 0.0130cm.

It is the relation between the focal length of a lens to the refractive index of its material and the radii of curvature of its two surfaces. It is used by lens manufactures to make the lenses of particularly power from the glass of a given refractive index.

1/f=(μ-1)1/R1-1/R2 where , f is focal length ,μ is refractive index and r is radius of curvature

Where we given the values of R1→46cm ,

μ→1.60

Putting the values in equation and solving it we get ,

focal length→ 0.0130 cm

So the focal length is proved .

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Given,

Initial speed is v=2 m/s

The cross sectional area reduces to 1/4 of the original area

To find

The speed of water at the narrowed portion.

Explanation

Let the original area be A

Let the speed at the narrowed portion be u

By conservation lawwe have,

Conclusion

The speed at the narrowed portion is 8 m/s

Answer:

number of valence electrons is equal to the atoms main group number.

Explanation:

main group number for an element can be found from its column on the periodic table.

According to the Skygazer's Almanac for 2022 at 40 degrees, Venus and Saturn will be in opposite parts of the sky on December 17, 2022.

The Skygazer's Almanac provides astronomical information for a specific location and year. In this case, at a latitude of 40 degrees, the almanac indicates that Venus and Saturn will be in opposite parts of the sky on December 17, 2022. This means that Venus and Saturn will appear at opposite sides of the celestial sphere as observed from Earth. However, it's important to note that the almanac's predictions are approximate and can be influenced by various factors, including atmospheric conditions and the observer's specific location. To obtain the most accurate and up-to-date information, it is recommended to consult more recent astronomical sources or use specialized software that can provide precise positions and dates for celestial events.

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The free body diagram for the problem is shown below:

If the people don't slide down this means that the friction has to be equal to the Weight, then we have:

Now, from newton's second law we have that:

but

then:

And then we have:

Plugging the values given we have:

Therefore the coefficient of friction is 0.238

The speed of a satellite moving in a stable circular orbit around the earth at a height of 3600 km is 6310 m/s

The satellite will experienced a centripetal force which is equivalent to the gravitational force between the satellite and the earth.

centripetal force =  m . v²/R

gravitational force = GMm/R²

Hence,

m . v²/R =  GMm/R²

v² = GM/R

v = sqrt (GM/R)

Where:

G = gravitational constant = 6.67 x 10⁻¹¹ Nm²/kg²

R = distance from the center of the earth

M = earth's mass = 5.97 x 10²⁴ kg

The earth radius = 6400 km and the satellite's orbital height is 3600 km.

Hence,

R = 6400 + 3600 = 10,000 km = 10⁷ m

Plug these parameters into the equation:

v = sqrt (6.67 x 10⁻¹¹ x  5.97 x 10²⁴ /  10⁷)

v = 6310 m/s

Hence, the speed of the satellite is 6310 m/s

Your question is incomplete, but most probably your question was:
Calculate the speed of a satellite moving in a stable circular orbit around the earth at a height of 3600 km.

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The microphone impedance of the yaesu-ft-70 dr is 2kΩ and the antenna impedance is 50Ω.

Impedance is the opposition to the alternating current, arising from the combined effect of the ohmic resistance and reactance in the circuit. The unit of Impedance is the ohm. The Ft-70Dr is a compact system with a fusion transceiver providing both a conventional analog FM operation system and the advance C4FM digital mode.

It is built for commercial grade standard for Dust and water protection, making this radio suitable for hardest environment. The frequency of Ft-70Dr is 108MHz-580Mhz, and the output power is 5 watt, with microphone impedence of 2kΩ.

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The radius of the event horizon of a 10-Solar-mass black hole is 2950 kilometers.

The radius of the event horizon of a black hole is known as the Schwarzschild radius and it is a function of the mass of the black hole. The Schwarzschild radius is given by the formula:

r = 2GM/c^2

where

r = radius of the event horizon (in meters)

G = gravitational constant (6.674 x 10^-11 N*(m/kg)^2)

M = mass of the black hole (in kg)

c = speed of light in a vacuum (2.998 x 10^8 m/s)

For a 10-Solar-mass black hole, we can use the mass conversion factor 1 Solar mass = 1.989 x 10^30 kg.

M = 10 x 1.989 x 10^30 kg

Now, we can substitute the values into the formula

r = 2 x 6.674 x 10^-11 x M/ (2.998 x 10^8)^2

r = 2GM/c^2 = 2 x 6.674 x 10^-11 x (10 x 1.989 x 10^30) / (2.998 x 10^8)^2

r = 2.95 x 10^3 m = 2950 kilometers

So, the radius of the event horizon of a 10-Solar-mass black hole is 2950 kilometers.

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