the osmotic pressure of a solution formed by dissolving 65.0 mg of aspirin c9h8o4 in 0.250 l of water at 25°c is ________ atm.

The magnitude of the normal force exerted by the bottom of the bucket on the phone is approximately 1.9404 N.

The normal force exerted by the bottom of the bucket on the phone is equal in magnitude but opposite in direction to the weight of the phone. We can find the weight of the phone using the formula:

weight = mass x gravitational acceleration

where the mass of the phone is 0.18 kg and the gravitational acceleration is approximately 9.8 m/s^2.

weight = 0.18 kg x 9.8 m/s^2

weight = 1.764 N

Since the bucket and phone are accelerating downward with an acceleration of 1.1 m/s^2, the net force acting on them must be:

net force = mass x acceleration

where the mass is the combined mass of the bucket and phone. We can calculate the net force as follows:

net force = (mass of bucket + mass of phone) x acceleration

net force = (m + 0.18 kg) x 1.1 m/s^2

We don't know the mass of the bucket, but we can assume it is much greater than the mass of the phone, so we can neglect the 0.18 kg term. Then we get:

net force ≈ m x 1.1 m/s^2

The normal force exerted by the bottom of the bucket on the phone is equal in magnitude but opposite in direction to the net force acting on the phone. Therefore, we can say:

normal force = net force = m x 1.1 m/s^2

Substituting the weight of the phone for m, we get:

normal force = 1.764 N x 1.1

normal force = 1.9404 N

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(8a) The work done on the block is 2,000 J.

(8b) The energy converted into thermal energy is 1,000 J.

The work done on the block is calculated by applying the following formula.

W = F x d

where;

W = 200 N x 10 m

W = 2,000 J

The energy converted into thermal energy is equal o work done by friction force.

W = 100 N x 10 m

W = 1,000 J

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Answer:

 μ= 0.0375,  kinetic

Explanation:

For this exercise we set a reference system with the x axis parallel to the chord

Y axis  

      N - W = 0

      N = W

X axis

      T - fr = 0

the expression for the friction force is

      fr = μ N

we substitute

       T - μ W = 0

       μ = T / W

we calculate

         μ = 1.5 / 40

        μ= 0.0375

coefficient of kinetic friction

Answer:

0.0520kg

Explanation:

divide by 1000

Answer:

0.37 kg

Explanation:

I'm not a professor myself, but this is how I worked it out:

using the graph, after 100 seconds, the temperature is 100 degrees Celsius.

If we now substitute everything into the specific heat capacity equation, making the mass "m", we would come up with:

4200 = 155000/(m x 100)

If we rearrange and solve for m, we get 0.37 kg.

I'm not sure if I have done this correctly, feel free to correct me.

Hope this helps!

By using the specific heat capacity formula, the  mass of water in the kettle is 0.47 kg

Give that the energy transferred to the water in 100 seconds was 155 000 J and the specific heat capacity of water = 4200 J/kg °C

From the graph;

The initial temperature of the water at time zero is 22 degree Celsius

The final temperature of the water at time 100s is 100 degree Celsius

Change in temperature (T) = 100 - 22 = 78 degree Celsius

To determine the mass of water in the kettle, use the heat energy formula below

E = mcT

Substitute all the parameters into the equation

155000 = 4200 x 78 M

Make M the subject of the formula

M = 155000/327600

M = 0.47 kg

Therefore, the  mass of water in the kettle is 0.47 kg

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When you push a pencil off your desk, the energy transformation that takes place is that potential energy transforms into kinetic energy.

The correct answer to the given question is option C.

Potential energy is the energy stored within an object because of its position or configuration.

In this scenario, the pencil has potential energy because of its elevated position on the desk. When the pencil is pushed off the desk, it begins to move, which means that it has kinetic energy. Kinetic energy is the energy of motion.

As the pencil falls off the desk, its potential energy is transformed into kinetic energy, which is the energy that results from its motion. The faster the pencil falls, the greater its kinetic energy will be because kinetic energy is directly proportional to the square of an object's velocity.

Therefore, when you push a pencil off your desk, the potential energy that it has because of its elevated position is transformed into kinetic energy as it falls towards the ground.

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Answer:

All points to the left of zero are negative numbers. All points to the right of the zero are positive numbers. Zero is generally considered the center of the number line since both positive and negative numbers (more specifically integers) are considered to go to infinity. (Negative infinity or positive infinity)

Explanation:

Whoops sorry I accidentally commented the first time

Answer:

I'm pretty sure it's called Astronomy

Explanation:

Hope this helps:)...if not then sorry for wasting your time and may God bless you:)

Answer: Astronomy

Explanation: Astronomy is objects we can see with our eyes, like the Sun , the Moon , the planets, and the stars . It also includes objects we can only see with telescopes or other instruments, like faraway galaxies and tiny particles.

I hope this helps ;o o;

The ball must be thrown down with a velocity of 14 meters per second in order to bounce 10 meters higher than its original level, neglecting any energy losses in striking the ground.

To determine the speed at which a ball must be thrown down to bounce 10 meters higher than its original level, we can use the principle of conservation of energy. Neglecting energy losses due to air resistance and assuming an idealized situation, we can equate the potential energy gained during the bounce to the kinetic energy of the ball before it hits the ground.

The potential energy gained by the ball during the bounce is equal to the gravitational potential energy at the new height, which can be calculated as mgh.

where

m = mass of the ball,

g = acceleration due to gravity (approximately 9.8 m/s²)

h = height gained (10 meters in this case).

The kinetic energy of the ball just before it hits the ground is given by (1/2)mv²,

where

v = velocity of the ball.

Equating these two energies, we have:

mgh = (1/2)mv²

Canceling out the mass (m) from both sides of the equation, we get:

gh = (1/2)v²

Simplifying further, we have:

v = √(2gh)

Substituting the values of g (9.8 m/s²) and h (10 meters), we can calculate the velocity (v):

v = √(2 * 9.8 * 10) ≈ √(196) ≈ 14 m/s

Therefore, the ball must be thrown down with a velocity of approximately 14 meters per second in order to bounce 10 meters higher than its original level, neglecting any energy losses in striking the ground.

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Answer:

we should not drop a magnet on the floor because the magnets tend to lose magnetism gradually and become weak over a period of time if they are not stored properly.

Answer:

Well depending on the floor like say if it was a wooden floor the magnet might lose it magnetism, if concrete floor the magnetic brake and still lose it magnetism, if a metal floor the magnet would stick not sure if it wood lose it magnetism or not but the possibilities still there, basically what I'm saying is the magnet would lose its magnetism if it were to interact with the floor maybe temporary or maybe permanently.

for those with with a learning disability it's a

Explanation:

Answer:

The ans is Radiation

Mark as brainliest !!

Answer:

\(\huge\boxed{\sf K.E. = 16 \ J}\)

Explanation:

Mass = m = 3 kg

Speed = v = 4 m/s

Kinetic Energy = K.E = ?

\(\displaystyle K.E. =\frac{1}{2} mv^2\)

\(\displaystyle K.E. =\frac{1}{2} (3)(4)^2\\\\K.E. =\frac{1}{2} (3)(16)\\\\K.E. = (2)(8)\\\\K.E. = 16 \ J\\\\\rule[225]{225}{2}\)

The value of the resistor depends on the value of the resistivity of the wires used. For example, if the resistivity of the wires is 2.00×10⁻⁸ ohm-meters, then the resistance of the parallel wire would be:R = 2.00×10⁻⁸ ohm-meters × 1270.88 = 0.0255 ohms. Therefore, the value of the resistor for the given parallel wires would be 0.0255 ohms.

The question involves a problem about parallel wires separated by a distance of 5.0 mm. To find the resistor for a given length of parallel wires, we need to know the value of the resistivity of the wires. We can use the formula to find the value of the resistor. Resistivity (ρ) is a property of materials that tells us how well a material can conduct electricity. It is measured in ohm-meters (Ω.m).The formula for the resistance (R) of a wire with resistivity (ρ), length (L), and cross-sectional area (A) is given by:R = ρ(L/A)where R is the resistance in ohms, ρ is the resistivity in ohm-meters, L is the length of the wire in meters, and A is the cross-sectional area in square meters.Now, we have to determine the resistance of a parallel wire by using the given values. The length of the wire (L) is 10 cm = 0.1 m. The distance between the wires (d) is 5.0 mm = 0.005 m. The cross-sectional area (A) of the wire can be calculated by using the diameter of the wire (d) as follows:A = π(d/2)² = π(0.001/2)² = 7.854×10⁻⁷ m². Now, we can substitute these values into the formula for the resistance of the parallel wire:R = ρ(L/A) = ρ(0.1/7.854×10⁻⁷) = ρ(1270.88)The value of the resistor depends on the value of the resistivity of the wires used. For example, if the resistivity of the wires is 2.00×10⁻⁸ ohm-meters, then the resistance of the parallel wire would be:R = 2.00×10⁻⁸ ohm-meters × 1270.88 = 0.0255 ohms. Therefore, the value of the resistor for the given parallel wires would be 0.0255 ohms.

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Answer:

Explanation:

Length of one side of cube = 5 x 10⁻² m .

volume = ( 5 x 10⁻² )³

= 125 x 10⁻⁶ m³

Expression for thermal volume expansion is as follows :

V₂ = V₁ ( 1 + γ Δt )

V₂ and  V₁ are volume before and after rise in temperature , γ is coefficient of volume expansion Δt is increase in temperature .

linear expansivity = 4 x 10⁻⁵ K⁻¹

coefficient of volume expansion γ  = 3 x 4 x 10⁻⁵

= 12 x 10⁻⁵ K⁻¹

Putting the value

V₂ = 125 x 10⁻⁶ ( 1 + 12 x 10⁻⁵ x 100 )

=  125 x 10⁻⁶  +  125 x 10⁻⁶  x 12 x 10⁻³

= 125 x 10⁻⁶  +  1.5  x 10⁻⁶  

= 126.5 x 10⁻⁶

= 126.5 cm³

Answer:

the orbital in which the electron is located relative to the atom's nucleus.

Explanation:

Answer:

the principal energy level of an electron refers to the shell or orbital in which the electron is located relative to the atom's nucleus.

Answer:

Aaaaw noooo. :(

Explanation:

what did they say to u and what state do u live in. I will help u stand up to them. I have taken down many bullies before by using words. in fourth grade, my friend was getting bullied by the class, then yelled and stood up for her. they all fell silent and never bullied her, or any of my friends again. For whatever reason they bully u is probably d.u.m.b. which means they r really d.u.m.b. Also, U should try finding out a lot of personal info about them that they dont want anyone to know. also tell the principal. Is ur mom nice, or mean? if shes nice, she'll support u and fight for u, which means u should address

Answer:

You should stick up for yourself because if you don't then no one else will but im always here to talk to you if you need someone

Explanation:

Free fall refers to the motion of an object that is solely influenced by gravity, without any other significant forces acting upon it. In free fall, an object experiences acceleration due to gravity, which causes it to accelerate downward at a constant rate.

To determine how far the 5kg rock falls in 4 seconds after being dropped from an 80-meter-high cliff. The distance travelled can be calculated using the equation for free fall:
distance = 0.5 * g * t^2, where g is the acceleration due to gravity (approximately 9.81 m/s^2), and t is the time (4 seconds in this case).
distance = 0.5 * 9.81 * 4^2
distance ≈ 78.5 meters
So, after 4 seconds, the rock will have fallen approximately 78.5 meters.

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A 200 kg snowmobile having the same momentum will travel at 45 m/s.

Momentum of an object is the product of mass and speed of an object.

P = mv

where;

m₁v₁ = m₂v₂

v₂ = m₁v₁/m₂

v₂ = (300 x 30)/200

v₂ = 45 m/s

Thus, a 200 kg snowmobile having the same momentum will travel at 45 m/s.

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Complete question is;

A rocket ship starts from rest and turns on its forward booster rockets, causing it to have a constant acceleration of 4 m/s² rightward. After 3s, what will be the velocity of the rocket ship?

Answer:

v = 12 m/s

Explanation:

We are given;

Initial velocity; u = 0 m/s (because ship starts from rest)

Acceleration; a = 4 m/s²

Time; t = 3 s

To find velocity after 3 s, we will use Newton's first equation of motion;

v = u + at

v = 0 + (4 × 3)

v = 12 m/s

Answer:

sorry I don't understand

Explanation:

please translate it in english

The cord does approximately 3.454 J of work on the mass as it swings a distance of 8.0 cm.

To calculate the work done by the cord on the mass as it swings, we can use the formula:

Work (W) = Force (F) * Distance (d) * cos(θ)

Given:

Mass of the pendulum (m) = 4.4 kg

Length of the cord (L) = 0.7 m

Initial displacement of the mass (x) = 7.7 cm = 0.077 m

Distance swung by the mass (d) = 8.0 cm = 0.08 m

First, let's calculate the gravitational force acting on the mass:

Force due to gravity (Fg) = mass * acceleration due to gravity

= 4.4 kg * 9.8 \(\frac{m}{s^{2} }\)

= 43.12 N

Next, we can calculate the angle θ between the force exerted by the cord and the direction of motion. In this case, when the mass swings, the angle remains constant and is equal to the angle made by the cord with the vertical position. This angle can be found using trigonometry:

θ = \(sin^{-1}\)(x / L)

= \(sin^{-1}\)(0.077 m / 0.7 m)

Using a scientific calculator, we can find the value of θ to be approximately 6.32 degrees.

Now, we can calculate the work done by the cord:

W = F * d * cos(θ)

= 43.12 N * 0.08 m * cos(6.32 degrees)

Using a scientific calculator, we can find the value of cos(6.32 degrees) to be approximately 0.995.

Substituting the values into the formula:

W ≈ 43.12 N * 0.08 m * 0.995

Calculating the product:

W ≈ 3.454 J

Therefore, the cord does approximately 3.454 Joules of work on the mass as it swings a distance of 8.0 cm.

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Answer:

p2=28.12KPa

Explanation:

Given data:

Initial temperature = 295 K

Final temperature= 395 K

Initial pressure = 21.0 KPa

Final pressure = ?

Solution:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

Now we will put the values in formula:

21.0 KPa / 295 K = P₂/395 K

P₂ = 21.0 KPa× 395 K / 295 K

P₂ = 8295 KPa. K /295 K

P₂ = 28.12 KPa

All three reach the ground at the same time which is denoted as option A in this scenario.

These are the forces which opposes the motion of an object as it passes through air.

Moon has no air and therefore has no air resistance which is why all the objects will reach the ground at the same time.

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The purpose of the prefixes in the metric system is to signifies the multiples of tens for each unit.

A prefix is a word that precedes a basic unit to indicate the multiple or fraction of that basic unit.

Thus, the prefixes in the metric system are used to signify multiples of ten for each unit.

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Answer: Option A- They signify the multiples of ten for each unit.

Explanation:

Just got it correct on test :)

Answer:

Meine Mama hat mir einfach erlaubt das ich Cola Trinken darf wie cool ist das bitte! Jetzt zock ich Fortnit.e und trink Cola! YIPEEE!

Explanation:Meine Mama hat mir einfach erlaubt das ich Cola Trinken darf wie cool ist das bitte! Jetzt zock ich Fortnit.e und trink Cola! YIPEEE!Meine Mama hat mir einfach erlaubt das ich Cola Trinken darf wie cool ist das bitte! Jetzt zock ich Fortnit.e und trink Cola! YIPEEE!Meine Mama hat mir einfach erlaubt das ich Cola Trinken darf wie cool ist das bitte! Jetzt zock ich Fortnit.e und trink Cola! YIPEEE!Meine Mama hat mir einfach erlaubt das ich Cola Trinken darf wie cool ist das bitte! Jetzt zock ich Fortnit.e und trink Cola! YIPEEE!Meine Mama hat mir einfach erlaubt das ich Cola Trinken darf wie cool ist das bitte! Jetzt zock ich Fortnit.e und trink Cola! YIPEEE!Meine Mama hat mir einfach erlaubt das ich Cola Trinken darf wie cool ist das bitte! Jetzt zock ich Fortnit.e und trink Cola! YIPEEE!Meine Mama hat mir einfach erlaubt das ich Cola Trinken darf wie cool ist das bitte! Jetzt zock ich Fortnit.e und trink Cola! YIPEEE!Meine Mama hat mir einfach erlaubt das ich Cola Trinken darf wie cool ist das bitte! Jetzt zock ich Fortnit.e und trink Cola! YIPEEE!

The transverse displacements for a traveling wave are given by the formula y(x, t) = A sin(kx - ωt), where y is the transverse displacement of the medium at a position x and time t, A is the amplitude of the wave, k is the wave number, x is the position of the medium, ω is the angular frequency of the wave, and t is the time.

The above formula is used to represent a wave traveling in the x direction. The quantity kx - ωt is the phase of the wave at a given point in space and time. The wave is said to be in phase at two points in space if the difference in their phases is equal to an integer multiple of 2π.

In summary, the transverse displacements for a traveling wave are given by the formula y(x, t) = A sin(kx - ωt), where y is the transverse displacement of the medium at a position x and time t, A is the amplitude of the wave, k is the wave number, x is the position of the medium, ω is the angular frequency of the wave, and t is the time.

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A ray of light impinges on a transparent material at some angle with the normal. If the material has a higher index of refraction, as it enters, the ray will B. bend to make a smaller angle with the normal

This phenomenon is known as refraction and occurs due to the change in the speed of light as it moves from one medium to another with different refractive indices. The bending of the light ray is governed by Snell's law, which states that the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the refractive indices of the two media.

Therefore, when the ray enters the material with a higher refractive index, it will slow down and bend towards the normal. This behavior is what allows lenses to focus light and is essential in many optical devices, including eyeglasses, microscopes, and telescopes. So if a ray of light impinges on a transparent material at some angle with the normal and the material has a higher index of refraction, the ray will B. bend to make a smaller angle with the normal as it enters.

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Answer:

1 : 2 (30 : 60)

Explanation:

The rate of increase of the Earth's gravity field at latitudes 30° and 60° are in the ratio 1 : 2 because 30 : 60 simplified is 1 : 2.

If the answer does not ask for the ratio to be simplified leave its as 30 : 60.