How many grams are in 0. 02mol of Mg (25. 3g/mol)​

Answer:

20.4 \(m/s^{2}\)

Explanation:

To start doing this problem, first draw a free body diagram of the table. My teacher always tells us to do this, and I find that it is very helpful. I have attached a free body diagram to this answer- take a look at it.

First, let us see if Net force = MA. To do that, we need to determine whether the object is at equilibrium horizontally. For an object to be at equilibrium, it either needs to be moving at a constant velocity or not moving at all. Also, if an object is at equilibrium, there will not be any acceleration. But we know that there IS acceleration horizontally, so it cannot be in equilibrium. If it is not in equilibrium, we can use the formula ∑F= ma.

Let us determine the net force. Since the object is moving horizontally, we can ignore the weight and normal force, because they are vertical forces. The only horizontal forces we need to worry about are the applied force and force of friction.

Applied force = 1055 N (490 + 565)

Friction force= Unknown

To find the friction force, use the kinetic friction formula, Friction = μkN

μk is the coefficient, which the problem includes- it is 0.613.

N is the normal force, which we have to find.

*To find the normal force, we have to determine if the object is at equilibrium VERTICALLY. Since it has no acceleration vertically (it's not moving up/down), it is at equilibrium. Now, when an object is at equilibrium in one direction, it means that all the forces in that direction are equal. What are our vertical forces? Weight (mg) and Normal force (N). So it means that the Normal force is equal to the Weight.

Weight = mg = (40)(9.8) = 392 N

Normal force = 392 N

Now, plug it back into the formula (μkN): (0.613)(392) = 240.296 N

Friction = 240.296 N

Now that we know the friction, we can find the horizontal net force. Just subtract the friction force, 240.296 from the applied force, 1055 N

Horizontal Net Force: 814.704 N

Now that we know the net force, plug in the numbers for the formula

∑F= ma.

814.704 = (40.0)(a)

*Divide on both sides)

a = 20.3676 m/s^2

Round it to 3 significant figures, to get:

20.4 \(m/s^{2}\)

Explanation:

las respuestas están en la foto de arriba

Answer:

An object at rest is described by Newton's First Law of Motion. An object in static equilibrium has zero net force acting upon it. The First Condition of Equilibrium is that the vector sum of all the forces acting on a body vanishes.

Explanation:

Answer:

see below

Explanation:

the first condition means that the light ray inside the optically denser medium hits the surface of the optically less dense medium.

this in simple words means, light must be travelling from am optically denser medium to an optically less dense medium

hope this helps :)

Answer: Frequency and wavelength are inversely proportional. c=f⋅λ (The speed of light is directly proportional to f and λ) .

Explanation: just helping

The frequency of the electromagnetic wave exists 9.55 × 1014 Hz and it is classified as ultraviolet.

Any periodic wave can be measured in terms of wavelength and frequency to determine its speed. v = λf.

Any electromagnetic wave travels at the same speed as light in empty space, or c = 3 \(*\)108 m/s.

The frequency of the electromagnetic wave is 9.55 × 1014 Hz and it is classified as ultraviolet.

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Answer:

are used by geneticists to determine the probability of different offspring genotypes.

Answer:

P =

\( \frac{mc{q2 - q1}{t} \)

Explanation:

F = ma

213 N = 21.4 kg * a

a = 213 / 21.4 = 9.95 m/s^2

concept employed

The quantity of complete waveforms produced per second is the frequency (f) of a wave. This is the same as the number of oscillations or cycles per second.

The duration of a waveform, or the duration of an oscillation, is measured in seconds (T). It is obvious that frequency and duration are inverses.

We know that = 1/T 2/1

= T1/T2

= (1/10T)1 0

= 1/ 10 means that the frequency is 1/ 10.

Oscillation is the process by which any quantity or measure fluctuates repeatedly about its equilibrium value over time. Another definition of oscillation is a periodic variation in a substance's value between two values or around its core value.

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Answer:-750 kg*m/s

Explanation:

Momentum = mass*velocity

Momentum = 15kg*(-50 m/s)

Momentum = -750 kg*m/s

Answer:

The Moon orbits Earth once every 27.3 days and spins on its axis once every 27.3 days. This means that although the Moon is rotating, it always keeps one face toward us. Known as “synchronous rotation,” this is why we only ever see the Moon's nearside from Earth.

I hope this helps you out

Each atom within a specific element has the same number of protons, which determines its atomic number. The correct statement.

This is inaccurate because the atomic number of an element is determined by the number of protons in the nucleus of its atoms, not by the number of neutrons.

Each atom within a specific element has the same number of protons, which determines its atomic number. The atomic number of an element is a fundamental property that defines the element and its place on the periodic table.

The number of protons in the nucleus of an atom of that element. Neutrons, do affect the atom's mass and stability but do not determine their atomic number.

The correct statement is Each atom within a specific element has the same number of protons, which determines its atomic number.

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Answer:

ground Waves

Explanation:

Explanation:

The potential energy of an object has the following formula

         Potential energy = mgh

      where m = mass of the object

                   g = acceleration due to gravity

                   h = height of the object

This means that the potential energy of an object depends upon its mass, acceleration due to gravity, and height.

In the given situation we have a bucket full of water. If the mass and acceleration due to gravity are not changed, the only way the potential energy can be decreased is by reducing the height of the bucket full of water.

This can be done by: -

         (i) Lifting the bucket full of water in such a way that you

             decrease its height as compared to the bench.

        (ii) Put the bucket full of water on a stool whose height is

            lower than the bench.

Answer:

1.By decreasing it's contents- this decreases the weight of the bucket thus decreasing the potential energy of the bucket.

2.By decreasing the height of the bench we have decreased the amount of potential energy stored in the bucket

The minimum period for a satellite in orbit around a spherical planet of uniform density can be derived by considering the gravitational force and the centripetal force acting on the satellite. By equating these forces, the minimum period can be determined.

The gravitational force acting on the satellite is given by the equation F_grav = (G * M * m) / r^2, where G is the gravitational constant, M is the mass of the planet, m is the mass of the satellite, and r is the distance between the center of the planet and the satellite.

The centripetal force required to keep the satellite in orbit is given by F_centripetal = (m * v^2) / r, where v is the velocity of the satellite.

By equating the gravitational force and the centripetal force, we have (G * M * m) / r^2 = (m * v^2) / r.

Simplifying the equation, we can solve for the velocity of the satellite, v, in terms of the gravitational constant, the mass of the planet, and the distance between the satellite and the planet.

The period of the satellite is given by the equation T = (2 * pi * r) / v, where T is the period and r is the distance between the center of the planet and the satellite.

By substituting the expression for v into the period equation, we can derive the minimum period for a satellite in orbit around a spherical planet of uniform density.

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Answer:

3.6 s

Explanation:

100 km/hr =27.77 m/s

100/27.77=3.6 sec

The aspect of perception that allows us to find parts of a picture and the whole picture simultaneously is the whole and part.

Perceiving an image as a whole, while recognizing its individual parts, is the result of the concept of whole and part that underlies gestalt psychology, which studies the ways in which people interpret sensory information.

The word "gestalt" refers to the way in which the mind organizes information into a meaningful whole. This form of psychology is focused on understanding the ways in which humans perceive the environment and the stimuli that it provides.

The perception of a picture or image as a whole rather than as individual components is one of the hallmarks of the gestalt approach.

As a result of the whole and part, one can perceive the entire picture while also identifying the individual parts that comprise it.

The concept of whole and part is a way of explaining how humans perceive visual information, and it is a fundamental aspect of gestalt psychology.

The perception of an image is not only determined by the individual elements that make it up but also by the relationships between them.

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The 13.09 g of argon occupies a volume of 9.82 L at a pressure of 1.47 atm at a temperature of 162°C.

To answer this question, we can use the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles of gas, R is the gas constant, and T is the temperature.

First, we need to calculate the number of moles of argon:

n = m/M

where m is the mass of argon and M is the molar mass of argon (39.95 g/mol).

n = 13.09 g / 39.95 g/mol = 0.327 mol

Next, we can rearrange the ideal gas law to solve for temperature:

T = PV/nR

T = (1.47 atm) * (9.82 L) / (0.327 mol * 0.08206 L·atm/mol·K)

T = 436 K

Finally, we can convert this temperature to degrees Celsius:

T = 436 K - 273.15 = 162°C

Therefore, 13.09 g of argon occupies a volume of 9.82 L at a pressure of 1.47 atm at a temperature of 162°C.

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Using similar triangles, we can set up the equation AC / BC = AB / BC to find the rate of change of the observer-to-rocket distance. By differentiating and substituting values, we find that d(AC)/dt ≈ -367240 ft/sec. Thus, the observer-to-rocket distance is changing at a rate of approximately -367240 ft/sec when the rocket is 1200 ft from the ground.

To find the rate at which the observer-to-rocket distance is changing, we can use the concept of similar triangles. Let's set up a right triangle to represent the situation:

Let A be the observer's position, B be the launch pad, and C be the current position of the rocket, which is 1200 ft from the ground. The observer is standing 500 ft away from the launch pad (AB = 500 ft). The observer-to-rocket distance is AC, and the rocket is moving vertically upwards with a velocity of 700 ft/sec.

We want to find d(AC)/dt, the rate of change of AC with respect to time, when the rocket is at C.

From the information given, we can set up the following equation using similar triangles:

AC / BC = AB / BC

AC / 1200 ft = 500 ft / BC

Simplifying the equation:

AC = (500 ft * 1200 ft) / BC

AC = 600000 / BC

Now, we need to find d(AC)/dt by differentiating both sides of the equation with respect to time:

d(AC)/dt = d(600000 / BC)/dt

Using the quotient rule:

d(AC)/dt = (0 - 600000 * d(BC)/dt) / \(BC^2\)

We know that d(BC)/dt is the velocity of the rocket, which is given as 700 ft/sec. Substituting this value:

d(AC)/dt = (0 - 600000 * 700) / \(BC^2\)

Finally, we need to find BC, which is the horizontal distance between the rocket and the launch pad. BC can be found using the Pythagorean theorem:

BC = \(\sqrt{(AC^2 - AB^2)}\)

BC = \(\sqrt{(1200 ft^2 - 500 ft^2)}\)

BC =\(\sqrt{ (1440000 ft^2 - 250000 ft^2)}\)

BC = \(\sqrt{(1190000 ft^2)}\)

BC ≈ 1091.88 ft

Substituting BC into the equation for d(AC)/dt:

d(AC)/dt = (0 - 600000 * 700) / \((1091.88 ft)^2\)

Simplifying:

d(AC)/dt ≈ -367240 ft/sec

Therefore, when the rocket is 1200 ft from the ground, the observer-to-rocket distance is changing at a rate of approximately -367240 ft/sec. The negative sign indicates that the distance is decreasing as the rocket moves upwards.

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Answer : Lipids and carbohydrates are both made from carbon, hydrogen, and oxygen, but lipids have less oxygen (Option B)

Carbohydrates are biomolecules composed of carbon (C), hydrogen (H), and oxygen (O) in a 1:2:1 ratio, respectively.

Carbohydrates can be divided regarding the number of monomers in the biomolecule into monosaccharides, disaccharides, and polysaccharides.

Explanation:

hope this answer will helps you !

Constructive interference occurs when two waves overlap and the resulting wave has a larger amplitude. Hence, option (2) is correct.

What is interference?

The phenomenon in which there is an overlapping between the two waves propagating in a medium is known as interference. The interference is classified into two categories namely,

Constructive interference -

It occurs when there is a superposition of the two waves such that the resulting wave has a large amplitude.

Destructive interference -

It occurs when there is a superposition of the two waves such that the resulting wave has a lower amplitude.

Thus, we can conclude that constructive interference occurs when two waves overlap and the resulting wave has a larger amplitude. Hence, option (2) is correct.

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Answer:

B: Constructive

Explanation:

I just did the Instruction on EDGE2020 and it's 200% correct!  

Also, heart and rate if you found this answer helpful!! :) (P.S It makes me feel good to know I helped someone today!!)  :)

Answer: A and B

Explanation:

just took the apex test

Two statements best determine whether an engineering design is

successful

A. Specific project goals were met.

B. Time and money limitations were not exceeded

A "project" consists of a coordinated series of activities or tasks performed by engineers, designers, drafters and others from one or more engineering disciplines or departments.

It is important to meet the need of project what the company wants , to meet the project goals for the correct execution of the project . Setting goals can give you a clear focus , motivates employee and set target for your project  to work towards

Since , every project have a budget and a need to know if a project is worth the cost or not .

Both overestimation and underestimation of money have negative consequences and any delay in producing the end result of project can reduce the time to market and lead to reduction of profit.

correct options are

A. Specific project goals were met.

B. Time and money limitations were not exceeded.

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Answer: 5.7

Explanation: 38% of 15.

The weight we experience ourselves and the ability to stand in the ground is due to the gravitational pull of earth. If this pull is lower we feel weight loss. So the cat will have a weight of 5.7 pounds or 2.58 kg in mars where the gravitation is about 38% of earth.

Gravitational force is a kind force by which a body attracts other objects into its centre of mass. Earth have strong gravitational effect on objects and thus we are all standing on the surface and everything falling from a height hits the ground.

As the mass of the object increases, gravitational effect also increases. The weight experienced by a body is the product of its mass and gravity. Thus massive body have greater weight.

Our mass is constant everywhere but weight will change according a change in gravity. Mars  have only 38% of gravity of earth. Thus the cat weighing 15 pounds on earth will loss its weight in mars by 38%.

Thus, 15 × 38/100= 5.7 pounds will be the weight of the cat in mars.

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Answer:

this is called speed

Explanation:

its easy

Answer:

door handles are kept near the door handles that are in the door

Answer:

Explanation:

The speed of the wave given only it's frequency and wavelength can be found by using the formula

\(c = f \times \lambda\)

where

c is the velocity of the wave in m/s

\( \lambda\) is the wavelength in m

f is the frequency in Hz

From the question we have

c = 6 × 1.5 = 9

We have the final answer as

Hope this helps you

Answer:

first one down second one up

Explanation:

Answer:

1.26

Explanation:

f=1/(2pi) square root k/m

f=1/(2pi) square root 42.4/.675

f=1.26 I just did this question and found this right