What BEST describes the process that happens when water evaporates from a lake?

A. As water evaporates from a lake, it becomes a gas that spreads throughout the air. This
gas sometimes cools as it rises, condenses, and helps form clouds.
B. As water evaporates from a lake, it becomes tiny droplets of liquid water that rise to
form clouds.
C. As water evaporates from a lake, it becomes tiny droplets of liquid water. When
these droplets reach a specific height, they fall back to Earth in the form of rain.
D. As water evaporates from a lake, it becomes a gas that moves directly into clouds
without ever being part of the air outside of the clouds.

The potential of the athletes gravitational potential energy during running up a hill increases by 245000 Joules.

The energy that an object stores as a function of its height or vertical position is known as gravitational potential energy. Because of the Earth's gravitational pull on the object, the energy is stored.

The relationship between mass, gravity, and change in height is defined mathematically. The formula is used to calculate it is:

PE = m × g × h

Here, it is given that-

The mass of the athlete = 50 Kg

The Initial height, h1 = 400 m

The final height, h2 = 900 m

Firstly, gravitational potential energy is calculated when athlete is at a height of h1 that is 400 m. On the putting the given values in the formula-

PE1 = 50 × 9.8 × 400

PE1 = 196000 Joules

Next, we will calculate the gravitational potential energy when athlete is at a height of h2 that is 900 m. By putting the values in the formula, we get-

PE2 = 50 × 9.8 × 900

PE2 = 441000 Joules

Now, to calculate the increase in gravitational potential energy when athlete runs up a hill from a height of 400m to 900m we can subtract the potential energies-

Potential by which athlete's gravitational potential energy increases = PE2 - PE1 = 441000 - 196000 = 245000 Joules or 245 kilo joules

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The complete question is:

An athlete with a mass of 50 kg runs up a hill. The foot of the hill is 400 m above sea level and the summit is 900 m above sea level. Calculate by how much the athlete's gravitational potential energy increases.

While running up a hill, an athlete's gravitational potential energy increases by 245,000 joules.

How much energy does gravity potentially hold?

Gravitational potential energy is the amount of energy an object may hold depending on its height or vertical position. The energy is trapped by the gravitational pull of the Earth on the object.

Mathematical formulas are used to define the relationship between mass, gravity, and height change. It is calculated using the following formula:

PE = m × g × h

It is said here that-

The athlete weighs 50 kg.

Initial height, 400 m (h1)

H2 = 900 metres is the final height.

First, the athlete's gravitational potential energy is determined when they are 400 metres above the ground (h1). Upon entering the specified values into the formula:

PE1 = 50 × 9.8 × 400

196000 Joules for PE1.

The gravitational potential energy for an athlete at a height of h2 of 900 m will then be determined. When we enter the values into the formula, we obtain:

PE2 = 50 × 9.8 × 900

PE2 equals 441,000 Joules

Now, we can subtract the potential energies to determine the increase in gravitational potential energy that occurs when an athlete sprints up a hill from a height of 400 to 900 metres.

PE2 - PE1 = 441000 - 196000 = 245000 Joules, or 245 kilojoules, is the potential by which an athlete's gravitational potential energy increases.

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The heart's power output , based on an assumption of 70 beats per minute, is 0.93W. An average of 105 mm-Hg of pressure is used to push out 73 cm3 of blood throughout each heartbeat.

Power is the quantity of energy that is transported or transformed per unit of time in physics. The average blood pressure is 105 mm Hg, or 70 beats per minute, or 1.16 beats per second (1 mm Hg = 133 N/m2), depending on the number of heartbeats per minute.

Power output is given by the formula P =nW,

where n =heart rate work done is given by the formula

W = =pAd =pV,

therefore W =pV.

derived from equations (1) and (2), P =nPV = ((70/60)beats/s)(105133 N/m2)(7310-6m3)

P = 0.93 W for power output

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Answer: Negative

Explanation: The acceleration along the y-axis for any projectile motion will always be -9.8m/s^2.

The average force exerted on the probe from the moment the rockets fire at t = 0 s to the moment it is at rest on the planet is about b. 10000N

As is visible from the graph

the velocity of the space probe at t = 0 sec

v₁ = 5000 m/s

the velocity of the space probe at t = 100 sec

v₂ = 0 m/s

therefore, average negative acceleration = v₂ - v₁ / t

= 0 - 5000 / 100 m/s²

therefore average force exerted on the probe

F = ma = 200 × 50 N

= 10000N

hence the average force is 10000N

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(complete question)

A 200. kg space probe descends to the surface of a planet. the speed of the probe during the time of descent is graphed above. the average force exerted on the probe from the moment the rockets fire at t = 0 s to the moment it is at rest on the planet is about... A) 2 800 N B) 10 000 N C) 145 000 N D) 29 000 000 N

Answer:

PLS RATE AS BRAINIEST

Explanation:

Types of metals are:-

USES OF METALS

I HOPE THIS HELPED

Answer:

Weight = Mass × Gravity ( = Weight )

Explanation:

I'm not really sure why it says = W two times but anyways:

W is used to represent the weight of something

M is used to represent the mass of something

G is used to represent gravity ( in simple terms )

G more specifically means gravitational acceleration

Note: W can also mean watt but in this case it means weight

:)

Answer:

Time=Distance÷Speed

Time=250m(50m×5)÷5m/s

Time=50s

Answer:

The frequency and wavelength of electromagnetic radiation are inversely related.

Explanation:

Frequency and wavelength are inversely proportional. Theoretically, they are governed by [tex]\lambda * f = v[/tex], where lambda represents the wavelength, f represents the frequency, and v represents the speed of a wave. In this case, we can empirically notice from model 3 that as the wavelength increases(i.e., we move to the right of the electromagnetic radiation spectrum), the frequency decreases and vice versa. For example, long radio waves have a very high wavelength and a low frequency, whereas gamma rays(on left) have very high frequencies and low wavelengths. Thus, we can conclude that they are inversely related.

Refer to the attached photo. Would appreciate a rate :)

The applied force on the block sliding on the frictionless inclined plane is 1.9 N.

Friction is the force that opposes the sliding or rolling motion of one body relative to another. For example, when you want to stop or slow down, you use your car's brakes because the friction created between the brakes and the wheels slows down or stops the car.

The unevenness of the two contact surfaces creates friction. When an object rides on another object, the surface irregularities become entangled and friction occurs. The rougher the surface, the more irregularities there are, and the greater the friction.

Equation of motion along an inclined plane:

Fₙ = (m×g×sinθ) - (m×a)

Where, Fₙ = applied force

m = mass of the block (2.0 kg)

g = gravitational acceleration (9.8 m/s²)

a = acceleration (1.5 m/s²)

θ = inclination of plane (15°)

Fₙ = (2 × 9.8 × sin15) - (2 × 1.5)

Fₙ = (19.6 × 0.25) - 3

Fₙ = 4.9 - 3

Fₙ = 1.9 N

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Answer:

Below

Explanation:

Find out how long it takes to fall the 30 m ....then use this time and the horizontal velocity to find the answer

For vertical :   d = 1/2 a t^2

                      30 = 1/2 (10) t^2      so t = sqrt 6

Horizontal velocity * time = distance from cliff base

          20 m/s   *   sqrt 6 = 48.99 = ~ 49 meters

The acceleration due to gravity is the acceleration gained by an object due to gravitational force.

The acceleration an object experiences as a result of gravitational force is known as acceleration due to gravity. Its vector nature which includes both magnitude and direction makes it a quantity. The unit g stands for gravitational acceleration. At sea level, the standard value of g on earth's surface is 9.8 m/s².

The distance a body's entire mass can be concentrated without changing its moment of rotational inertia about an axis through its center of mass is known as the radius of gyration.

Note that your information was incomplete and an overview was given.

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The Hubble time for a Hubble constant of 100 km/s.Mpc would be equal to 10  billion years.

Hubble’s law can be described as the velocity of the galaxy, which is called the redshift, is directly proportional to its distance.

Hubble time can be described as the age taken by the universe to expand if the expansion was linear. Hubble time is dependent on the dimensionless factor, mass, and energy of the universe.

Hubble time for the Hubble constant is given as follows:

[tex]{\displaystyle t_H =\frac{1}{H_o}[/tex]

Given the Hubble constant, H₀ = 100 Km/s.Mpc

[tex]{\displaystyle t_H =\frac{1}{H_o} =\frac{1}{100}\times 3.16 \times 10^{19}[/tex]

[tex]{\displaystyle t_H =3.16 \times 10^{17}s[/tex]

[tex]{\displaystyle t_H =\frac{3.16 \times 10^{17}s}{3.16\times 10^{7}}[/tex]

[tex]{\displaystyle t_H = 10^{10}\;years[/tex]

[tex]{\displaystyle t_H = 10 \; billoin \; years[/tex]

Therefore, the Hubble time for a Hubble constant of 100 km/s Mpc is 10 billion years.

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When a net force of 140 Newton's is applied to a wagon for 10 seconds, this causes the wagon to undergo a change of momentum of  1400 Newton-second.

momentum is the product of a particle's mass and velocity. Being a vector quantity, momentum possesses both magnitude and direction. According to Isaac Newton's second equation of motion, the force applied on a particle is equal to the time rate of change of momentum.

Given that:

Net force acting on the wagon: F = 140 Newton.

Time duration: t = 10 seconds.

According to Isaac Newton's second equation of motion:

Force acting on the wagon = change in momentum/time duration

⇒ Change in momentum =  Force acting on the wagon × time duration

= 140 × 10 Newton-second.

= 1400 Newton-second.

Hence, The wagon  undergoes a change of momentum of 1400 Newton-second.

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Answer:6.897m/s

Explanation: velocity is the change of distance with time in a specified direction.

therefore to find velocity divide distance given by Time

V=distance/time

  =400m/58s

  =6.897m/s

For an RLC series circuit :
a. The average power dissipated in the resistor for the following values for the capacitance C = 76uF is 3.97W

b. The average power dissipated in the resistor for the following values for the capacitance C = 7.6uF is 4.2W

It is the ability of a component or circuit to collect and store energy in the form of an electrical charge. Capacitors are energy-storing devices available in many sizes and shapes.

a. How to calculate the average power for the capacitance C = 76uF?
V₀ = 100V

n = 500Hz

R = 550 Ω

L = 0.2H

XL = WL = 2 * π * F * L = 2 * 3.14 * 500 * 0.2 = 628 Ω

Xc = 1 / Wc

= 10^6 / 2 * 500 * π * 76

= 10^3 / 76 * 3.14

= 1000 / 238.64

= 4.19 Ω

Z = √R² + (XL - Xc)²

= √550² + (628 - 4.19)²

= √302,500 + 389,138.9

= 831.65Ω

peak current

Io = Vo / Z

= 100 / 831.65

= 0.12A

Irms = Io / √2

= 0.12 / 1.414

= 0.085A

Average power dissipated Pav = Irms^2 * R

= 0.085^2 * 550

= 3.97W

Therefore, the average power dissipated in the resistor for capacitance value 76uF is 3.97W.

b. How to calculate the average power for the capacitance C = 7.6uF?

Xc = 10^6 / 1000 * π * 7.6

= 1000 / 7.6 * 3.14= 41.9Ω

Z = √R² + (XL - Xc)²

= √550² + (628-41.9)²

= √302,500 + 343,513.21

= 803.75Ω

Io = Vo / Z

= 100 / 803.75

= 0.124 A

Irms = Io / √2

= 0.124 / 1.414

= 0.0877 A

Average power dissipated Pav = Irms^2 * R

= 0.0877² * 550

= 4.23W

Therefore, the average power dissipated in the resistor for the capacitance value 7.6uF is 4.23W.  

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The setup time of a clocked flip-flop is:

The minimum amount of time that an output must remain stable before an active clock transition.

A flip-flop is a device that can hold a single bit of data (a binary digit); one of its two states corresponds to a "one," and the other to a "zero." Such data storage can be used to store state, and in electronics, such a circuit is known as sequential logic.

The output state changes of a timed flip-flop can be synced to a clock pulse thanks to an additional input.

Data must be at a valid logic level at setup time (tS), which is defined as the time before the DAC clock shift.

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(i) The pressure due to 25m of water is 250,000 Pa.

(ii) The atmospheric pressure is 100,000 Pa.

Pressure can be defined as the force per unit area of an object.

Mathematically, the formula for pressure of an object is derived as;

P = F/A

where;

P = (mg) / (V/h)

P = (mgh) / V

P = (m/V)gh

where;

Density of an object or a substance is known as mass per unit volume of the substance.

P = (ρ)gh

where;

The pressure due to 25m of water is calculated as follows;

pressure = (ρ)gh

pressure = 1000 kg/m³   x   10 N/kg    x    25 m
pressure = 250,000 Pa

The atmospheric pressure is calculated as;

P(atm) = P(total) - P(water)

P(atm) = 350,000 Pa  -  250,000 Pa

P(atm) = 100,000 Pa

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According to Ampere Maxwell's law, the first half, the magnetic field can be created by the changing electric field. So, the electric field strength is changing.

In a static electric field, according to Ampere maxwell law, the divergence at one point is equal to the electric charge volume density ρ at that point divided by ε0. The physical meaning of this statement is that a circulating magnetic field is created by an electric current and also may be by an electric field that changes with time.

An electric current, or we can say a changing electric flux through a surface, has the ability to produce a circulating magnetic field around a path that bounds the given surface. The direction of the current and the induced magnetic field is known by the right-hand rule, as shown below.

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Answer: how long it took.

Explanation: i know nothing is really instant, but its ridiculous that it took over 1.6 million years for the temperature to drop to a thousand degrees after the big bang expansion. and then even after that, it took millions of years to make the first one. regardless, it is still incredible.

The speed of 1.25 ×10³ ft³/min of the airflow is equivalent to 0.56 m³/s.

The speed of a moving body can be defined as a measurement of how quickly the distance a body traveled changes with time. Speed is defined as a scalar parameter as it exhibits magnitude but no direction.

A body that travels faster and with high speed, can travel a lot of ground in a lesser time.

Given, the speed of the airflow of the fan = 1.25 ×10³ ft³/min

We have to express the  ft³/min  into  m³/s:

We know that 1 foot = 0.3 m  and 1 min = 60 s

1.25 ×10³ ft³/min  = 1.25 ×10³ (0.3 m)³/ 60 s

1.25 ×10³ ft³/min  = 0.56 × 10³ ×10⁻³ m³/s

1.25 ×10³ ft³/min  = 0.56 m³/s

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Answer:

Explanation:

Given:

F₁ = 1400 N

D₁ = 9.1 m

η = 68%;    η = 0.68

F₂ 110 N

__________

D₂ - ?

If the pulley system is 100% efficient:

D₂'  = F₁·D₁  / F₂ = 1400·9.1 / 110 ≈ 115.8 m

If the pulley system has the code 68% :

D₂ = D₂' / η = 115.8 / 0.68 ≈ 170 m

To maintain constant body temperature, living organisms release heat radiation.

Life is dependent on homeostasis, which is the preservation of stable internal conditions, in warm-blooded animals. The consistent body temperature is one of homeostasis's signs. Depending on the species, this temperature for animals should range from 35 to 39.5 °C.

A portion of the heat generated in cells during breathing must be expelled in order to maintain a steady body temperature. Living things can lose heat through convection, conduction, radiation, and the loss of water through breathing and sweating (2260 KJ/Kg is the heat at which water vaporises). Imperceptible sweating and perceptible sweating are the two types of sweating that exist. The body naturally experiences unnoticeable sweating throughout the day.

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The acceleration of the Lockheed is 9.38 × [tex]10^{2}[/tex], for the given force and the mass, and using the formula F = m × a, where m = mass, a = acceleration.

The rate at which an object's velocity with respect to time changes is called its acceleration. It is a vector quantity. The direction of the net force imposed on an object determines its acceleration in relation to that force.

A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

F = m × a

7.23 × [tex]10^{5}[/tex]  = 7.7 × [tex]10^{4}[/tex] × a

9.38 × [tex]10^{2}[/tex] = a

Hence, the acceleration of the Lockheed is 9.38 × [tex]10^{2}[/tex], for the given force and the mass.

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Route poising, as opposed to merely discontinuing to display the route, refers to promoting the unsuccessful route with a "infinite" metric. Poison reversal is the practice of poisoning a route by publicizing it.

In physics, the term "time reversal" refers to the mathematical process of substituting the word for time in equations or equations with its opposite in order to depict a situation in which time moves backwards or the motion are inverted. The cosmos cannot be "unmixed." This eventually suggests the time only exists as a result of the Big Bang.

In physics, the term "time reversal" refers to the mathematical process of substituting the word for time in formulas for equations with its opposite in order to represent a situation in which time moves backward or all motions are inverted.

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With the use of second equation of motion, the magnitude of the initial velocity of the object is 17.72 m/s

Velocity is the distance travel in a specific direction per time taken. It is a vector quantity and it is measured in m/s

Given that a car travels east with an acceleration of 0.20 m/s². It takes 45.0s to travel from position xi at 250.0 m east of the origin, to position xf at 1250 m east of the origin. That is,

The initial velocity of the car at position xi can be found by using the formula

s = ut + 1/2at²

Substitute all the parameters

1000 = 45u + 1/2 × 0.2 × 45²

1000 = 45u + 202.5

45u = 1000 - 202.5

45u = 797.5

u = 797.5/45

u = 17.72 m/s

Therefore, the initial velocity of the car at position xi is 17.72 m/s

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After 90 minutes, there is a 50% chance that the final nucleus will have decayed because element Q has a half-life of 30 minutes for its 4 nuclei. This phrase is frequently used in nuclear physics.

Examining the interaction that now exists between chemists and philosophers of chemistry gives a very singular chance to consider the conceptual nature of the term "element." Robert Boyle, an English scientist, initially proposed the chemical element. A quantity (of substancehalf-life )'s (symbol t12) is the amount of time needed for it to decrease to half of its original value. The phrase is frequently used in nuclear physics to refer to how long stable atoms last or how quickly unstable atoms decay radioactively.

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Answer:

Explanation:

Given:

m = 2 050 km

M = 5.98·10²⁴ kg

h = 4.89·10⁵ m

R = 6.37·10⁶ m

____________

F - ?

F = G·m·M / R²

F = 6.67·10⁻¹¹·2050·5.98·10²⁴ / (6.37·10⁶)² = 18 400 N