what difference will you get from the flying or air filled balloon and the hydrogen filled balloon.​

Answer:

The answer is

Explanation:

Using Boyle's law to find the final pressure

That's

\(P_1V_1 = P_2V_2\)

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the final pressure

\(P_2 = \frac{P_1V_1}{V_2} \)

From the question

P1 = 115 kPa

V1 = 480 mL

V2 = 650 ml

So we have

\(P_2 = \frac{115000 \times 480}{650} = \frac{55200000}{650} \\ = 84923.076923...\)

We have the final answer as

Hope this helps you

The statemengt is false. Electromgnetic waves do not require a medium to transfer energy. They can transfer energy through vacuum (empty space with nothing in it). If electrimagnetic waves needed a medium to move through from place to place, then we could never see the sun, and also it would get very cold here.

The Acceleration of the object = 6.4 m/s²

Mass of block (m) = 5 kg

Action force on block, (F₁) = 40 N

Frictional force opposing the motion (F₂) = 8 N

Acceleration of the object (a) = ?

⇒ Net force = Action force on block - Opposing friction force

⇒ F = F₁ - F₂

⇒ F = 40 - 8

⇒ F = 32 N

Net force of the block (F) = 32 N

Mass of block (m) = 5 kg

F is the Force in N.

m is the Mass in kg.

a is the Acceleration in m/s².

F = ma

⇛ a = F/m

⇛ a = 32/5

⇛ a = 6.4 m/s²

Explanation:

work done=force*distance

force=50n

distance=75m

therefore work done is

50*75=3750joules

Answer:

the potential energy is 19.6J

the kinetic energy is 0.0.004J

Explanation:

using the formulas

P.E = mgh while

K.E =mv²/

To balance the torque bar, we can use the equation: torque = force x distance. In this case, the torque on one side of the pivot should be equal to the torque on the other side.

For the first scenario, the torque is calculated as follows:
Torque1 = (300 g) x (20 cm)

To balance the torque bar, we need to find the mass that should be placed 30 cm from the pivot. Let's call it mass2. The torque equation for this scenario will be:
Torque2 = (mass2 g) x (30 cm)

Since the torque on both sides of the pivot should be balanced, we can set up the equation:
Torque1 = Torque2

(300 g) x (20 cm) = (mass2 g) x (30 cm)

To solve for mass2, we can divide both sides of the equation by 30 cm:
(300 g) x (20 cm) / (30 cm) = mass2 g

After simplifying, we find that mass2 is approximately 200 g.

In summary:
You will have to place a mass of approximately 200 g 30 cm from the pivot to balance the torque bar.
By equating the torques on both sides of the pivot, we can determine the mass required. The torque equation for each side of the pivot is set equal to each other, and by solving the equation, we find that the mass needed is approximately 200 g.

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Answer:

Chemical changes, such as rotting fruit and burning wood, are affected by temperature. More heat and energy causes a faster chemical change.

Explanation:

The best statement that Jacinta can add to her passage is:

Chemical changes, such as rotting fruit and burning wood, are affected by temperature. More heat and energy cause a faster chemical change.

This statement is correct because temperature is a factor that influences the rate of chemical reactions. Higher temperature means more kinetic energy for the molecules, which increases the chances of collisions and bond breaking. This leads to faster chemical changes and new substances being formed. The other statements are either incorrect or irrelevant to the topic of chemical changes.

Explanation:

The vertical component = 10sin30° = 5.0N.

Answer:

Scientific theories attempt to explain how events occur in the natural world.

Answer:

The answer is option  A. Scientific theories attempt to explain an entire group of related phenomena.

Explanation:

I got it right on the test

Hope it helps!

The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.

Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.

Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:

∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du

The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.

Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.

Let us work through the steps:

Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x

Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du

Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.

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increases Below a temperature of 4°C (39°F), water exhibits an unusual behavior. As the temperature decreases,

water molecules begin to form a lattice-like structure due to hydrogen bonding. This arrangement causes the water molecules to spread out, leading to an increase in volume and a decrease in density. This phenomenon is known as the expansion of water upon cooling. When water reaches its maximum density at around 4°C (39°F), it starts to contract as the temperature decreases further. This behavior is the reason why ice floats on water, as it is less dense than the liquid water.

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Take "to the right" to the be the positive horizontal direction. Then the net force on the box in the horizontal is

∑ F = 225 N - 100 N = 125 N

and by Newton's second law,

∑ F = ma   ↔   125 N = (250 kg) a

where a is the acceleration of the box. Solve for a :

a = (125 N) / (250 kg) = 0.5 m/s²

Answer:

A

Explanation:

The officer would have had permission regardless of anything else, kind of like letting someone into your house.

Answer:

Explanation:

If a star is moving toward Earth, it is blue-shifted. Light is an electromagnetic wave that has a range of colors

For a frictionless pulley with mass connected by a light string, the acceleration for the system when released is equal to 6.5m/s²

Using the formula a = (m₂ - m₁)g/(m₁ + m₂)

Where a = acceleration, m = mass and g = gravity

m₁  = 2kg

m₂ = 10kg

g = 9.8m/s²

Applying to the formula, a = (m₂ - m₁)g/(m₁ + m₂) to find the acceleration of a frictionless pulley when released;

a = (10 - 2)(9.8)/(2 + 10)

a = 8(9.8)/12

a = 6.5m/s²

Therefore the system's acceleration 6.5m/s²

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(a) The charge of -1.2C corresponds to approximately -7.5 × 10^19 electrons. (b) The mass of this many electrons is approximately 4.8 × 10^-17 kilograms.

(a) To determine the number of electrons necessary to produce a charge of -1.2C, we need to consider the elementary charge. The elementary charge represents the charge carried by a single electron, which is approximately -1.6 × 10^-19 coulombs. Dividing the given charge by the elementary charge, we find the number of electrons.

Number of electrons = -1.2C / (-1.6 × 10^-19C/electron) ≈ 7.5 × 10^19 electrons

(b) To calculate the mass of this many electrons, we utilize the mass of a single electron. The mass of an electron is approximately 9.1 × 10^-31 kilograms. Multiplying the number of electrons by the mass of a single electron, we obtain the mass.

Mass of electrons = (7.5 × 10^19 electrons) × (9.1 × 10^-31 kg/electron) ≈ 4.8 × 10^-17 kilograms

Therefore, the charge of -1.2C corresponds to approximately -7.5 × 10^19 electrons, and the mass of this many electrons is approximately 4.8 × 10^-17 kilograms.

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Answer: 1. Both balls have equal potential energy.

2. Potential energy would decrease, while total mechanical energy would remain constant.

3. A slide

4. Mass is eliminated when equating gravitional potential energy with kinetic energy.

5. 1/2 mv^2 = 1/2 kx^2

Explanation:

I did the test by pure guess and failed but oh well, got the answers

The statement that describes the final potential energy of the balls is "Both balls have equal potential energy".

The potential energy of an object increases with increase in height and decreases with decrease in height.

The maximum height traveled both balls is the same, and the time of the motion does not the affect the potential energy.

P.E = mgh

where;

Thus, we can conclude that both balls have equal potential energy.

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No, we would not expect the hot dog and carrot to have the same final temperature. This is because the specific heat capacity of the two substances is different. The specific heat capacity of water is much higher than that of a hot dog or a carrot.

During the heating process, the water transfers more heat energy to the carrot and hot dog due to their lower specific heat capacity. However, the hot dog and carrot do not absorb this heat energy equally due to their different masses and compositions.

Additionally, it's important to note that the rate of heat transfer during the boiling process may also affect the final temperature of the two substances.

For example, if the hot dog was closer to the bottom of the pot, it may have received more heat energy due to the hotter water at the bottom of the pot, resulting in a higher final temperature compared to the carrot.

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The average speed for the two events is 25.2 m/s

Average speed is the ratio of the total distance travelled by a body to the total time. It is measured in m/s

If you drive in a straight line at 20.0 m/s for 10.0 miles, then at 34.0 m/s for another 10.0 miles. To calculate the average speed, first convert the mile to meter

1 mile = 1609.34 m

10 miles = 10 × 1609.34 = 16093.4 m

Calculate the time for each event.

speed = distance / time

time = distance / speed

T1 = 16093.4 / 20

T1 = 804.67 s

T2 = 16093.4 / 34

T2 = 473.34 s

Total time t = T1 + T2

t = 804.67 + 473.34

t = 1278.01 s

Total distance s = 16093.4 + 16093.4

s = 32186.8 m

Average speed = s / t

Average speed = 32186.8 / 1278.01

Average speed = 25.19 m/s

Therefore, the average speed for the two events is 25.2 m/s approximately.

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The temperature of sweat when it is first produced is two degree more than normal temperature of the body because sweat removes extra heat from the body.

Our body begins to sweat when our body temperature goes up more than two degrees from normal which is 102 degree F. When you sweat, your body temperature drops back to the safe range which is 96.6 to 100.6 degrees F.

So we can conclude that The temperature of sweat when it is first produced is two degree more than normal temperature of the body because sweat removes extra heat from the body.

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The diffraction pattern of the hair appears in the horizontal direction that it does because the diffraction pattern of the hair appears in the horizontal direction due to the bending and spreading of light waves around the hair.

1. When light encounters an obstacle, such as a hair, diffraction occurs. Diffraction is the bending and spreading of light waves around the obstacle.
2. The hair acts as a single slit, allowing light to pass through the narrow gap around it.
3. As the light waves pass through this gap, they interfere with each other, causing constructive and destructive interference.
4. This interference results in a diffraction pattern that appears in the horizontal direction, which is perpendicular to the direction of the hair.
5. The pattern is characterized by a series of bright and dark bands, with the bright bands representing areas of constructive interference and the dark bands representing areas of destructive interference.
In conclusion, the diffraction pattern of the hair appears in the horizontal direction due to the bending and spreading of light waves around the hair, which causes interference patterns to form perpendicular to the direction of the hair.

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Answer:

R = 0.75 ohms

Explanation:

Given that,

The voltage of each battery, V = 1.5 V

Current through the light bulb, I = 2 A

We need to find the resistance of the light bulb. We know that,

Ohm's law, V = IR

Where

R is the resistance of the light bulb

Put all the values,

\(R=\dfrac{V}{I}\\\\R=\dfrac{1.5}{2}\\\\R=0.75\ \Omega\)

So, the resistance of the light bulb is equal to 0.75 ohms.

As it is a result of external forces acting upon it rather than a failure to maintain its state of motion.

The observation that a ball rolling down a bowling alley moves slightly slower with time does not violate Newton's first law of motion, also known as the law of inertia.

Newton's first law states that an object at rest will remain at rest, and an object in motion will remain in motion with a constant velocity (which includes moving at a constant speed in a straight line or moving with a constant speed in a curved path) unless acted upon by an external force. In other words, an object will maintain its state of motion (or lack thereof) unless an external force is applied to it.

In the case of a ball rolling down a bowling alley, the ball is subject to various external forces that act upon it and cause it to slow down. These forces include friction between the ball and the lane, air resistance, and deformation of the ball itself. These forces act in the opposite direction of the ball's motion and cause it to lose speed over time, as the ball's kinetic energy is dissipated into other forms of energy.

Therefore, the ball's decrease in speed over time is not a violation of Newton's first law, as it is a result of external forces acting upon it rather than a failure to maintain its state of motion.

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Explanation:

\(E = \frac{BA}{t} \sin( \theta) \\ = \frac{1.23 \times 2}{1} \\ = 2.46 \: V\)

As the slit width increases, the diffraction pattern gets narrower and vice versa.

The increase in silt width leads to the narrowing of diffraction pattern of the  light because the increase of width reduces the space for the passing of light wave.

So we can conclude that as the slit width increases, the diffraction pattern gets narrower and vice versa.

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Answer:

I think its B

Explanation:

Taking into account the Boyle's law, the original pressure of a gas was 2.5 atmospheres and the original volume was 578 mL.

Boyle's law states that the pressure of a gas in a closed container is inversely proportional to the volume of the container, when the temperature is constant. This is because when the volume decreases, the distance that the particles have to travel is less and therefore more shocks occur in each unit of time, that is, the pressure increases.

Mathematically, if the amount of gas and the temperature remain constant, the product of the pressure and the volume always has the same value:

P×V= k

where:

Being an initial state 1 and a final state 2, it is fulfilled:

P₁×V₁= P₂×V₂

In this case, you know:

Replacing in Boyle's law:

2.5 atm ×V₁= 1.7 atm ×850 mL

Solving:

V₁= (1.7 atm ×850 mL)÷ 2.5 atm

V₁= 578 mL

The original volume was 578 mL.

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The correct answer is B to C.

From the law of conservation of energy, energy can neither be created nor be destroyed but can be converted from one form to another.

Potential energy is the form of energy that is possessed by an object due to its height. The kinetic energy is the form of energy that is possessed by an object due to its motion.

The gravitational potential energy of the roller coaster will be maximum when it is at the maximum height and it will decrease with the decreasing height.

Its kinetic energy will be maximum when it has a maximum velocity.

Thus the roller coaster will have maximum kinetic energy at point B. And as it rises on the track towards point C, it will lose its kinetic energy which will be transformed into potential energy.

Thus as the roller coaster moves from B to C, its kinetic energy will be transformed

A magnet that is positively charged on one end and negatively charged on the other end is an example of D. polarity.

In the field of science, polarity can be described as a phenomenon in which the same substance has different charges in it. The electrical charges are separated inside the same substance or molecule as a result of polarity.

One part of a substance will be negative charges whereas the other will be positively charged as a result of polarity.

A magnet is an example of a substance that can easily gain or lose polarity. When the charges inside a molecule are separate at both ends, we will say that the magnet has gained polarity.

Although a part of your question is missing, you might be referring to this question:

A magnet that is positively charged on one end and negatively charged on the other end is an example of

A cohesion.

B adhesion.

C gravity.

D polarity.

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