if 0.795 mol of ammonia gas occupies 24.5 l at 0.853 atm, what is the celsius temperature? (r = 0.0821 atm•l/mol•k)

Answer:

D. muscular strength

Explanation:

Lifting any weight requires force to lift it. This force is the result of the muscular strength of the body. It is the muscular strength that determines the weight that a body can lift without any exhaustion. Muscular strength depends on the size of the muscular fibers and the nerves' ability. They help in activating the strength of the muscle. Lifting the objects and the ability to lift it are the outcome of the strength muscles have.

In the given situation, Dawn is trying to find her muscular strength.

Answer:

d

Explanation:

d

The ratio of a substance's weight, especially a mineral, to an equal volume of water at 4°C is called it's specific gravity or relative density.

Specific gravity is the ratio of the density of a substance to the density of a reference substance, usually water. In simple terms, specific gravity is the density of a substance compared to the density of water. It's a dimensionless amount since it's a ratio. It is frequently used in geology to compare the densities of minerals to those of water.

Specific gravity is calculated by dividing the density of a substance by the density of water. The specific gravity formula is given by:

Specific gravity = (density of substance)

(density of water)The specific gravity of a substance can be calculated by comparing its weight to the weight of an equal volume of water at a particular temperature, such as 4°C.

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Answer:

Over tens of millions of years, the giant supercontinent Pangaea began to slowly drift apart, forming the continents as they are known today.

Explanation:

i took the active

Answer:

the continents were once connected as one landmass.

Explanation:

right on edge 2022

Answer:

e-can be absorbed and transformed into heat

Explanation:

Answer:

FeCl2 has a high melting point.

Explanation:

Answer:

a. 2.53  μJ b. It will move away

Explanation:

a. What is the electric potential energy between the particles?

The electric potential energy U = kq₁q₂/r where k = 9 × 10⁹ Nm²/C², q₁ = 4.1 nC = 4.1 × 10⁻⁹ C, q₂ = 2.4 nC = 2.4 × 10⁻⁹ C and r = distance between charges = 3.5 cm = 3.5 × 10⁻² m.

Substituting the values of the variables into U, we have

U = kq₁q₂/r²

U =  9 × 10⁹ Nm²/C² × 4.1 × 10⁻⁹ C × 2.4 × 10⁻⁹ C/3.5 × 10⁻² m

U = 88.56 × 10⁻⁹ Nm²/3.5 × 10⁻² m

U = 25.3  × 10⁻⁷ Nm

U = 2.53  × 10⁻⁶ Nm

U = 2.53  × 10⁻⁶ J

U = 2.53  μJ

b. And if the second particle is released will it move forward or away from the source charge.

It will move away from the source charge since they have the same sign of charge. Since, opposite charges repel.

Answer:2.5 * 10^6 J away

Explanation:Using the equation PE = 9 * 10^9 * q1 * q2 / r,

where q is charge and r is distance. In this case, the equation would be

9*10^9{(4.1* 10^-9) * (2.4*10^9)/0.035} = 2.5 * 10^6. Both are positive, so they will be away.

Answer:

A. it is Electromagnet

B. there are 2 ways to increase the magnetic field in this situation.

hence only by doing first way ( increase number of turns) magnetic field can be increased.

a) The model for the velocity of a falling body with air resistance can be described using Newton's second law of motion. The equation can be written as:

m * dv/dt = mg - k * v^2

where m is the mass of the body, g is the acceleration due to gravity, k is the proportionality constant for air resistance, and v is the velocity of the body.

Assuming the ratio of k to m is unity, we can rewrite the equation as:

dv/dt = g - v^2

To solve this first-order ordinary differential equation, we can separate variables and integrate:

∫ 1/(g - v^2) dv = ∫ dt

After integration, we obtain:

atan(v/sqrt(g)) = t + C

Solving for v, we have:

v(t) = sqrt(g) * tan(t + C)

Given an initial velocity of 12 m/s, we can determine the value of C. Plugging in the values, we have:

12 = sqrt(g) * tan(C)

Now, we can solve for C using the given information.

b) To determine how long it will take for the cake to cool off to 75 °F, we can use Newton's law of cooling, which states that the rate of temperature change of an object is proportional to the difference between its temperature and the surrounding temperature. The equation can be written as:

dT/dt = -k(T - T_room)

where dT/dt is the rate of temperature change, T is the temperature of the cake, T_room is the room temperature, and k is the proportionality constant.

Separating variables and integrating, we get:

∫ 1/(T - T_room) dT = -k ∫ dt

After integration, we have:

ln|T - T_room| = -kt + C

Solving for T, we obtain:

T(t) = T_room + Ce^(-kt)

Given that the initial temperature is 300 °F and the desired temperature is 75 °F, we can determine the value of C. Plugging in the values, we have:

300 = 75 + Ce^0

Solving for C, we find:

C = 225

Now, we can determine the time it takes for the cake to cool to 75 °F by solving for t when T = 75 and plugging in the values.

Please note that the specific values of the proportionality constants and units are not provided in the question, so the final numerical results will depend on those values.

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Answer:

\(\\ \sf\longmapsto KE=\dfrac{1}{2}mv^2\)

\(\\ \sf\longmapsto \dfrac{1}{2}(0.02)v^2=400\)

\(\\ \sf\longmapsto 0.01v^2=400\)

\(\\ \sf\longmapsto v^2=40000\)

\(\\ \sf\longmapsto v=200m/s\)

The forces acting on the sign are gravity, tension, wind force, and the normal force. The force diagram for the sign consists of arrows representing these forces originating from the center of the sign. The forces on the sign are balanced if the net force equals zero.

Gravity pulls the sign downward, creating a force equal to the mass of the sign multiplied by the acceleration due to gravity (mg). Tension is the force exerted by the man on the sign to keep it from blowing away, acting in the opposite direction of the wind force. Wind force pushes the sign horizontally, depending on the speed and direction of the wind. The normal force, exerted by the ground or support structure, acts perpendicular to the surface on which the sign is placed.

To determine if the forces on the sign are balanced, one needs to examine the net force acting on the sign. If the sum of the forces in both the horizontal and vertical directions equals zero, then the forces are balanced. If the man exerts enough tension to counteract the wind force and the normal force equals the gravitational force, the forces on the sign will be balanced.

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Answer:

Explanation:

roles of nutrient in our body​

It's important to have a clear understanding of vector sum and trigonometry concepts to be able to determine the magnitude and coordinate direction angles of the resultant force.

The vector sum can be found by adding the vectors head-to-tail, which means that the tail of one vector is placed at the head of the next vector. The vector sum is known as the Resultant force.

To find the magnitude of the resultant force, we use the Pythagorean theorem, which states that the magnitude of the vector is equal to the square root of the sum of the squares of the vector's components. In other words,

|R| = √(Fx^2 + Fy^2 + Fz^2)

To find the direction angles of the resultant force, we use the trigonometric functions. The coordinate direction angles are the angles between the positive x, y, and z-axes and the projection of vector onto the xy, yz, and xz planes.

The angle with the x-axis is arctan(Fy/Fx)

The angle with the y-axis is arctan(Fz/Fx)

The angle with the z-axis is arctan(Fz/Fy)

It's worth noting that these angles are measured in a counterclockwise direction and that these angles are not unique, you can add or subtract multiples of 360° to get the same vector.

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Answer:

A. Rain

Explanation:

Moon + Bow = Moonbow, so Rain + Bow = Rainbow

Pretty simple tbh

Answer:

its B  lol easy

Explanation:

The temperature of the water is the independent variable because it is being deliberately changed by the experimenter to see how it affects the rate of mineral dissolution. Option B.

The independent variable is the variable that the researcher intentionally changes or manipulates in an experiment in order to observe its effect on the dependent variable.

In this case, the independent variable is the temperature of the water because it is what Jose is changing in each trial to see how it affects the rate at which the minerals dissolve.

The dependent variable, on the other hand, is the rate at which the minerals dissolve, because it is what is being measured and expected to change based on the independent variable.

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Two point charges are separated by a distance d. The first has a charge of +2e, and the second has a charge of +3e. The new electric potential energy is the same as the original electric potential energy. (option C)

To determine how the electric potential energy of the +2e charge changes when it is moved to a new position, we need to consider the formula for electric potential energy and analyze the situation.

Electric potential energy formula:

The electric potential energy (PE) between two point charges is given by the formula PE = k * (q1 * q2) / r, where k is the electrostatic constant (k = 9.00 x 10^9 Nm²/C²), q1 and q2 are the charges of the two point charges, and r is the distance between them.

Original electric potential energy:

In the original position, the distance between the charges is d. Therefore, the original electric potential energy (PE_original) is given by PE_original = k * (2e * 3e) / d.

New position and distance:

In the new position, the distance between the charges is 4d. Therefore, the new electric potential energy (PE_new) is given by PE_new = k * (2e * 3e) / (4d).

Comparing the original and new electric potential energies:

To compare the two electric potential energies, we can simplify the expressions. By canceling out the common factors, we find that PE_new = PE_original.

Therefore, the new electric potential energy is the same as the original electric potential energy. Thus, the correct answer is C. The new electric potential energy is the same as the original electric potential energy.

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Of the three states of matter (solid, liquid, and gas), gas has the most kinetic energy. This is because the particles in a gas have the highest average speed compared to the particles in solids and liquids.

In a gas, the particles are in constant motion, colliding with each other and the walls of the container. This motion generates kinetic energy, which is proportional to the speed and mass of the particles. In contrast, solids have the lowest kinetic energy because their particles are tightly packed and have limited movement. The particles in a solid vibrate around a fixed position, and only experience small oscillations. Liquids have an intermediate amount of kinetic energy. The particles in a liquid are less tightly packed than in a solid, and can move more freely, resulting in more kinetic energy. However, liquids have more intermolecular forces between the particles compared to gases, which restricts their movement and reduces their average speed. Therefore, of the three states of matter, gases have the most kinetic energy, followed by liquids and then solids.

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Answer:

Gravity force

Explanation:

Answer:

grav force

Explanation:

Normal (N) and gravity force (W)

assume g = 10 m/s²

a. N = W = m₁.g = 3 x 10 = 10 N

b. W = m₂.g = 1.5 x 10 = 15 N

c. N = (m₁+m₂)g = 4.5 x 10 = 45 N

The angular velocity of the system after the books are raised up above the person so that the dimension parallel to the ground is now 0.5 ft and the center of gravity of the books are 1 ft apart is 27.5 rad/s.

The angular velocity of the system after the books are raised up above the person so that the dimension parallel to the ground is now 0.5 ft and the centers of gravity of the books are 1 ft apart can be determined using the concept of the center of gravity.

The center of gravity of the entire system is calculated by finding the weighted average of the two books center of gravity

Therefore, the center of gravity of the two books is calculated as:

((5 ft x 2 lb) + (6 ft x 2 lb)) / (2 lb + 2 lb) = 5.5 ft

The angular velocity is then calculated as the product of the center of gravity and the original angular velocity, in this case 5 rad/s:

5.5 ft x 5 rad/s = 27.5 rad/s.

Therefore, the angular velocity  is 27.5 rad/s.

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The shortest distance required to to stop the automobile by locking the brakes is 27m.

The coefficient of friction is 0.83 between tires and dry pavement.

We have to find the shortest distance in which the automobile should come to stop from 21.2m/s.

The net acceleration of the automobile is,

a = Fr/m

Fr is the frictional force,

m is the mass of the body,

a= ug

g is the gravitational acceleration.

Putting values,

a = 0.93 x 9.8

a = 8.31 m/s².

Now, using the equation of motion,

V² - U² = 2as

s is the stopping distance,

V is the final speed,

U is the initial speed,

a is the acceleration of the automobile.

Putting values,

(21.2)² = 2 x 8.13 x s

s = 27m.

So, the stopping distance of the automobile is 27m.

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The moves your car forward is the effect of static friction. The power needed to move the tires, which would in turn pushes the vehicle backward against the road, comes from the engine.

Force is the term used to describe a body's tendency to alter or alter its state as a result of an external cause. When force is applied, the body could also alter its size, shape, and direction. hitting a football, pushing and pulling on the door, or kneading dough are a few examples.

A push in pull that an object experiences as a result of interacting with another item is known as a force. Every time two items interact, a force is exerted on all of the materials. The force is no longer felt by the two surfaces when the interaction ends.

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Answer:

Total momentum = 16 Kgm/s

Explanation:

Let the momentum of the two balls be A and B respectively.

Momentum A = 16 kgm/s

Momentum B = 0 kgm/s (since the ball is at rest).

Total momentum = A + B

Total momentum = 16 + 0

Total momentum = 16 Kgm/s

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

\( Momentum = mass * velocity \)

Total momentum of both the balls after the collision is 16 Kg.m/s

Given:

Momentum= 16 kg.m/s

To find:

Total momentum of both the balls after the collision.

What is momentum?

 Consider the momentum of the two balls be A and B respectively.

Momentum A = 16 kg.m/s

Momentum B = 0 kg.m/s (since the ball is at rest).

Total momentum = A + B

⇒ 16 + 0

Total momentum= 16 kg.m/s

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Answer:

To help push yourself to reach the goal, It can also help you pace yourself time wise

Explanation:

Answer:

The daughter. I can't really explain but practically, it happens as the daughter has stated.

Answer:

The value is  \(F = 235.2 \ N\)

Explanation:

From the question we are told that

   The mass of the sled is  \(m = 80 \ kg\)

  The  coefficient of friction is  \(\mu = 0.30\)

Generally the force that must be applied to the sled is equal to the frictional force experienced by the sled which is mathematically represented as

       \(F = m * \mu * g\)

=>    \(F = 80 * 0.30 * 9.8\)

=>    \(F = 235.2 \ N\)

I need you to make me an invented poem written please not in image