A man exerts more pressure while standing on one foot than by two foot​

The word "thermodynamics" stems from a Greek expression related to the movement of heat and thermal mechanics.

The word "thermodynamics" is derived from two Greek words: "thermo" meaning heat, and "dynamics" meaning movement. Together, they represent the study of the movement of heat and its relationship with other forms of energy. Thermodynamics encompasses the principles and laws that govern the behavior of energy, particularly heat energy, in systems. It deals with topics such as temperature, pressure, energy transfer, and the conversion of heat into work. The word highlights the central focus of thermodynamics on the movement, transfer, and transformation of thermal energy in various systems and processes.

Thermodynamics is derived from the Greek words "thermo" (meaning heat) and "dynamis" (meaning power or movement). Therefore, the term "thermodynamics" refers to the study of the movement or transfer of heat and its relationship with energy and work. It encompasses the principles and laws that govern the behavior of energy and heat in various systems.

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Considering that while traveling on a road with a final speed of 15 m/s, and an initial speed of 24 m/s, with a given time of 12 seconds.

To calculate the acceleration, we apply the following formula:

α = Vf - Vo/t

We add our data into the formula and solve:

α = 15 m/s - 24 m/s/12 sec

α = -0.75 m/s²

Therefore, the acceleration of the car is -0.75 m/s².

The bird travels a total distance of 92 km. When the two trains are 46 km apart, the bird starts flying from one train toward the other train.

Let's assume that the distance between the bird and the first train is x km. Since the bird is flying towards the other train at a speed of 46 km/h and the trains are moving towards each other at a combined speed of 46 km/h, the relative speed of the bird with respect to the first train is

69 km/h (46 km/h + 23 km/h).

Therefore, it takes the bird x/(69 km/h) hours to reach the second train.

During this time, the two trains move towards each other and reduce the distance between them by

Therefore, the distance between the bird and the second train is also x km. Now, the bird starts flying towards the first train at the same speed of 46 km/h. Again, it takes the bird

hours to reach the first train.

During this time, the two trains move towards each other and reduce the distance between them by another x/3 km. Therefore, the total distance traveled by the bird in one round trip is 2x km.

Since x + x/3 + x/3 = 92 km (the initial distance between the trains)

the total distance traveled by the bird in all the round trips is

2(92 km) = 184 km.

However, since the bird only flies halfway towards each train before turning back, the actual distance traveled by the bird is half of 184 km, which is 92 km.

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Answer:

Explanation:

The location of the target can be determined by calculating the horizontal distance according to the projectile formula

R = U*√2H/g

U is the initial speed = 20m/s

H is the maximum height = 14m

g is the acceleration due to gravity = 9.81m/s²

Substitute

R = 20*√2(14)/9.81

R = 20√28/9.81

R = 20√2.85

R = 20(1.689)

R = 33.79m

Hence the location of the target is at 33.79m

The value of force exerted on the women will be normal of the lift in positive x direction .

Acceleration is defined as change of velocity divided by time.

Since lift is moving upward at a steady speed , that means no change of speed has been taken place . hence no acceleration.

There is no external acceleration acting on the lift . Hence there will be  two forces, one is the force of gravity and the other is upward normal force from the elevator.

N = mg if the elevator is at rest or moving at constant velocity

The value of force exerted on the women will be normal of the lift in positive x direction

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La situación planteada se muestra a continuación:

(El diagrama mostrado es para la caja inferior). A continuación mostramos el diagrama para la caja superior:

Si consideramos el sistema de dos cajas como uno solo tenemos el siguiente sistemas de ecuaciones:

De donde:

Ahora debemos determinar si la caja de arriba no se resbala al aplicar esta fuerza, para esto debemos recordar que la fricción es máxima con el coeficiente de fricción estático.

Entonces tenemos que la fricción es máxima para el bloque de arriba cuando:

Dado que la fuerza que debemos aplicar no es mayor a la fricción máxima concluimos que ambas cajas bajaran al mismo tiempo. Por lo tanto la fuerza que debemos aplicar es de 188.5 N.

Answer: One can view a taxonomic hierarchy — the arrangement of species within genera, genera within families, and so on — as a working hypothesis, subject to revision.

Explanation: Taxonomic names refer to branches on the tree of life that we believe to exist, but we are open to new information that may change our view.

The volume of the triangular shape is 10.35 km³.

In geometry, volume is the amount of space enclosed by a three-dimensional object. It is measured in cubic units, such as cubic meters or cubic centimeters. The volume of a regular object can be calculated using a formula, while the volume of an irregular object can be calculated by dividing it into smaller regular objects and adding up their volumes.

For example, the volume of a cube with a side length of 1 meter is 1 cubic meter. The volume of a sphere with a radius of 1 meter is 4/3π cubic meters. The volume of a cylinder with a radius of 1 meter and height of 2 meters is 2π cubic meters.

The formula gives the volume of a triangular shape:

V = 1/2 * b * h * t

where:

b is the base of the triangle

h is the height of the triangle

t is the thickness of the triangle

In this case, we have:

b = 7 km

h = 1.9 km

t = 3 km

So now, the volume of the triangular shape is:

V = 1/2 * 7 km * 1.9 km * 3 km = 10.35 km³

Therefore, the volume of the triangular shale is 10.35 km³.

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ANSWER

b. adding to the internal energy only

EXPLANATION

The 1st Law of Thermodynamics states that the total change in the internal energy of a system, ΔU, is equal to the sum of the net heat transfer into the system, Q, and the net work done on the system, W,

As we can see in this equation, we can increase the internal energy of a system by adding heat to the system or doing work to the system.

So, if heat is added to a system it will increase the internal energy of the system.

Hence, the heat goes into adding to the internal energy only.

Changes in volume and density cause a gas in the atmosphere to rise as it is heated, and as a gas rises, its temperature decreases.

As a gas is heated, the molecules that make up the gas gain energy and begin to move faster. As the molecules move faster, they collide with each other more frequently and with greater force, causing the gas to expand and its volume to increase.

As the gas expands, its density decreases, and its buoyancy increases, making it less dense than the surrounding air. When a gas is less dense than the surrounding air, it tends to rise, which is known as convection.

Therefore, As a gas rises, it experiences a decrease in temperature, this is due to the decrease in atmospheric pressure. When a gas rises, the pressure on it decreases, which causes the gas to cool down.

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To determine the equilibrium temperature distribution in a rod with convective heat losses, the following steps should be followed:

Step 1: Derive the heat equation: ∂T/∂t = a ∂²T/∂x², where T is temperature, x is the spatial coordinate, a is the thermal diffusivity of the rod, and t is time.

Step 2: Solve the differential equation to get T(x,t).

Step 3: Apply boundary conditions at

x=0 and x=L.

It is assumed that heat is lost by convection, which means that the rate of heat loss is proportional to the temperature difference between the rod and the surrounding medium:

k(T-T∞),

where k is the heat transfer coefficient and T∞ is the temperature of the surrounding medium. Therefore, the boundary conditions are given by:-k(T(0,t)-T∞) = h(T(0,t)-T∞), where h is the convective heat transfer coefficient at

x=0.-k(T(L,t)-T∞) = h(T(L,t)-T∞), where h is the convective heat transfer coefficient at x=L.

Step 4: Solve the boundary conditions to get the constants of integration.

Step 5: Substitute the constants of integration into the general solution of the differential equation to get the temperature distribution T(x,t).

Step 6: Take the limit as t→∞ to get the equilibrium temperature distribution T_eq(x). The equilibrium temperature distribution is the temperature distribution that does not change with time, i.e., it is the steady-state temperature distribution.

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Copernican heliocentrism was a novel concept that fundamentally altered the geocentric view of the universe.

The father of modern astronomy is Nicolaus Copernicus, a Polish astronomer and mathematician. The heliocentric hypothesis of the solar system, which he initially put forth, states that Earth and other planets rotate around the sun.

Nicolaus Copernicus created the Copernican heliocentrism astronomical theory, which was first presented in print in 1543. This theory put the Sun in the center of the cosmos, stationary, and had Earth and the other planets orbit it at uniform speeds in circular orbits modified by epicycles.

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Answer:

43.3 m/s.

Explanation:

Assuming the potential energy is due to the gravitational potential energy, we can use the conservation of energy to find the kinetic energy:

Total energy = Potential energy + Kinetic energy

Kinetic energy = Total energy - Potential energy

Kinetic energy = 300 J - 40 J = 260 J

However, we need to know the mass of the object to convert the kinetic energy to velocity. We can use the potential energy to find the mass:

Potential energy = mgh

40 J = m(9.81 m/s^2)(300 m)

m = 0.137 kg

Now we can use the kinetic energy to find the velocity:

Kinetic energy = (1/2)mv^2

260 J = (1/2)(0.137 kg)v^2

v^2 = (2*260 J) / 0.137 kg

v = 43.3 m/s (rounded to one decimal place)

Therefore, the kinetic energy is 260 J and the velocity of the object when it reaches the ground is 43.3 m/s.

Answer:

9.80 kg

Explanation:

F = ma

96 N = m(9.8 m/s^2)

m = 9.80 kg

The mass of the ball will be m= 9.8 kg

It states that the force is equal to the rate of change of momentum . For a constant mass , force is equal to mass times acceleration

given :

Force due to gravity = 96 N

g = acceleration due to gravity = 9.8 m /s^2

using Newton's second law of motion

Since , F = ma

          96 = m g

          m = 96/9.8

          m= 9.8 kg

The mass of the ball will be m= 9.8 kg

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Answer:

So what you do is you add all of them then you put an n with the answer.

Explanation:

Answer:

Energy Lost for group A's car = 0.687 J

Energy Lost for group B's car = 0.55 J

Explanation:

The exact question is as follows :

Given - The energy of an object can be converted to heat due to the friction of the car on the hill. The difference between the potential energy of the car and its kinetic energy at the bottom of the hill equals the energy lost due to friction.

To find - How much energy is lost due to heat for group A's car ?

              How much for Group B's car ?

Solution -

We know that,

GPE = 1 Joule (Potential Energy)

Now,

For Group A -

Energy Lost = GPE - KE

                    = 1 J - 0.313 J

                    = 0.687 J

So,

Energy Lost for group A's car = 0.687 J

Now,

For Group B -

Energy Lost = GPE - KE

                    = 1 J - 0.45 J

                    = 0.55 J

So,

Energy Lost for group B's car = 0.55 J

Answer:

Many ionic substances will dissolve completely in water to form an aqueous solution of cations and anions; this solution will conduct electricity.

Explanation:

Answer:

Many ionic substances will dissolve completely in water to form an aqueous solution of cations and anions; this solution will conduct electricity.

Explanation:

Answer:…..

Explanation:

The quantity of heat energy supplied to the water from the metal is 2520 J.

The quantity of heat energy needed to increase the temperature of one kilogram of a substance by one degree Celsius is known as the substance's specific heat capacity.

Here,

Mass of the water in the container, m = 50 g = 0.05 kg

Initial temperature of the water, T₁ = 20°C = 293 K

Final temperature of the water, T₂ = 32°C = 305°C

Specific heat capacity of water, C = 4200 J/kgK

The expression for the quantity of heat energy supplied to the water from the metal is given by,

Q = mcΔT

Q = mC(T₂ - T₁)

Applying the values of m, C, T₁ and T₂

Q = 0.05 x 4200 (305 - 293)

Q = 210 x 12

Q = 2520 J

Hence,

The quantity of heat energy supplied to the water from the metal is 2520 J.

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Explanation:

We Know That

POTENTIAL ENERGY= MASS*g*HEIGHT

When the objects are lifted to same height then the object with heavier mass would have the highest potential energy

.

T=d/s or distance/speed

THE ASNWER IS A

Fixed cost volume variances occur when b. Fixed volume is different than expected.

Variances in the actual volume or level of activity compared to the anticipated or budgeted volume are known as fixed cost volume variances. Fixed expenses are often distributed based on the projected volume of production or activity, which causes these variations. If the actual volume is less than anticipated, the fixed cost volume variance will be in favor.

The cost per unit or cost per activity is decreased as a result of the fixed costs being dispersed over a lower level of activity. On the other hand, a negative fixed cost volume variance will result if the actual volume is larger than anticipated. The cost per unit or cost per activity is higher as a result of the fixed costs being dispersed over a larger degree of activity.

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Complete Question:

Fixed cost volume variances occur when -

a. fixed costs are lower than budgeted

b. fixed volume is different than expected

c. fixed costs are higher than budgeted fixed costs.

a) The derivation of the differential equation is ΔT' = (1 - h/(ρcPu))ΔT + T' - T and is explained in the explanation part below. b) The appropriate boundary conditions are: At the tube entrance (x = 0), T = To. At the tube exit (x = L), the convective heat transfer condition is applied: -kA(dT/dx) = hA(T - T∞).

a) The following assumptions are made to develop the differential equation characterising the temperature distribution of the liquid in the downstream region:

ρc(uA)∂T/∂x + ρc(uA)(T - To)∂u/∂x = kA∂²T/∂x² - hA(T - T∞)

Dividing the above equation by ρcPAu and rearranging, we obtain:

ΔT' = (1 - h/(ρcPu))ΔT + T' - T

b) The boundary conditions are:

Thus, this can be concluded regarding the given scenario.

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Answer:

B. Atoms are altered in both processes

Explanation:

Answer: B. Atoms are altered in both processes

Explanation:

The acceleration of a satellite is dependent on the strength of the gravitational field it is experiencing. The stronger the gravitational field, the greater the acceleration of the satellite.

The gravitational force between two objects is directly proportional to their masses and inversely proportional to the square of the distance between them. Therefore, as a satellite orbits around a planet, the gravitational force acting on it changes based on its distance from the planet.
At the closest point of its orbit, the satellite experiences the strongest gravitational force, causing it to accelerate towards the planet. As it moves away from the planet, the gravitational force decreases, causing a decrease in acceleration. At the furthest point of its orbit, the gravitational force is at its weakest and the satellite experiences the least acceleration. This relationship between acceleration and the strength of the gravitational field is essential for understanding the mechanics of orbiting satellites.

The satellite's acceleration is equal to the gravitational field strength experienced by the satellite.
1. A satellite in orbit experiences a force due to Earth's gravity, which pulls it towards the Earth's center.
2. This force causes the satellite to accelerate towards the Earth, resulting in a curved path or orbit around the Earth.
3. According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Therefore, acceleration (a) can be calculated as a = F/m, where F is the gravitational force and m is the mass of the satellite.
4. The gravitational field strength (g) at a particular location is defined as the force per unit mass acting on an object due to gravity. Hence, g = F/m.
5. Comparing the expressions for acceleration (a) and gravitational field strength (g), we see that they are equal: a = g.

In conclusion, the satellite's acceleration is equal to the gravitational field strength experienced by the satellite.

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Answer:

Explanation:

Answer

The true fact is that C is what happens in outer space.  Both rotations take 27.3 days.  

A: The exact opposite is true. It does rotate about it's axis.

B: Again this is just plain false. Given the way we observe it, the moon must be rotating around the earth.

D. they don't. 27.3 hours and 24 hours are not the same.

During a protostar's T Tauri phase, it may develop very strong winds.

The prostate is placed just underneath the bladder and in front of the rectum. it is about the size of a walnut and surrounds the urethra (the tube that empties urine from the bladder). It produces fluid that makes up part of semen. As a person has a long time, the prostate tends to increase in size.

Acute prostatitis is generally triggered when bacteria within the urinary tract enter the prostate. The urinary tract includes the bladder, kidneys, the tubes that join the kidneys to the bladder (ureters), and the urethra.

The prostate performs an essential function in male fertility and intercourse existence. although men can survive without a prostate, unfortunately, for lots of men, prostate elimination outcomes in terrible nice of existence, issues like erectile dysfunction, and more.

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The x and y components of the vector a = 15 m/s^2 and 39 left of y axis are -14.4, 3.99 m/s^2.

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Answer:

tips to get you started

Make a menu. ...

Plan your meals around foods that are on sale. ...

Plan at least one meatless meal a week. ...

Check your pantry, refrigerator and freezer. ...

Enjoy grains more often. ...

Avoid recipes that need a special ingredient. ...

Look for seasonal recipes. ...

Plan to use leftovers.

Explanation:

sana po makatulong