Select all the correct answers. Which two types of waves can transmit energy through a vacuum? a. radio waves b. seismic waves c. sound waves d. water waves
e. x-rays

Answer:

The answer is 34.67 kilograms force

The wave itself, that is, the crests and troughs, will move along the direction of propagation, but the particles themselves will only move perpendicularly to it.

How does a transverse wave rope move?

A wave in which the displacement of the medium's particles is perpendicular to the direction of energy transfer is called a transverse wave. If a rope is stretched out horizontally and the end is vibrated back and forth vertically, a transverse wave can be produced in the rope.

Transverse wave propagation is only feasible via solids; it is not possible in liquids or gases. Only transverse waves can display the polarization phenomena. The plane of vibration or polarization is the location where all of the particle vibration in a medium occurs. Shaking the rope causes the rope's constituent parts to oscillate, which causes the wave to advance or retreat from the energy source. The rope moves at a straight angle—or perpendicular—to the direction that the wave moves.

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The given information is incomplete and does not specify whether the cell is voltaic or electrolytic. Differentiating between the two requires understanding their fundamental characteristics.

a) To differentiate between a voltaic and an electrolytic cell, additional information such as the direction of electron flow, the presence of an external power source, and the nature of the electrode reactions is required.

b) The spontaneity of current flow in the cell depends on the overall cell potential, which is not given in the provided information.

c) The maximum potential of the cell cannot be determined without knowledge of the specific redox reactions occurring and the concentrations of species involved.

d) The behavior of the voltmeter connected to the cell would depend on the cell potential and how it changes over time, which is not fundamental provided.

e) The initial free energy of the cell at the point of construction cannot be calculated without more information about the chemical reactions and standard free energy changes.

f) Without further details, it is impossible to determine how the free energy of the cell changes over time as the cell operates. The specific reactions and concentrations involved would be necessary to make such an assessment.

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Example of erosion: Wind carries small pieces of rock away from the side of a mountain.

Erosion is the procedure by which the surface of the Earth gets worn down. Erosion can be created by natural elements such as erosion as wind and glacial ice. But everyone who has ever seen a picture of the Grand Canyon knows that nothing strikes the erosion slow steady movement of the water when it comes to commuting the Earth

Rain, rivers, floods, lakes, and the ocean convey away bits of soil and sand and slowly wash away the deposit. Rainfall produces four types of soil erosion: splash erosion, sheet erosion, rill erosion, and ravine erosion.

So we can conclude that Erosion is a ruinous force that wears away land features.

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A graph with vertical axis K E and horizontal axis Speed with a straight line sloping sharply upward.

The kinetic energy of an object is directly proportional to the square of its speed which means that if kinetic energy of an object increases the speed of that object is also increases and vice versa so we can conclude that graph with vertical axis K E and horizontal axis Speed with a straight line sloping sharply upward is the right answer.

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Answer:

The correct answer is:

B.)

Explanation:

I did the assignment on Edge, 2022.

(See the attachment below.)

Hope this helped, good luck on the quiz! :D

Answer:

Explanation:

The energy is potential energy, mgh.

m = mass in kg

g = acceleration due to gravity (alot of talk about whether g is 9.8, 9.81 or 10)

h = height above your zero line (alot of times distance to the ground)

PE = mgh = 4 * 10 * 2 = 80 Nm or 80 Joules

Answer:

Explanation:

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

The work done in pumping all the liquid out of the tank is 2500π lb-ft.

The potential energy of an object is given by the formula:

PE = mgh

Given:

Density of oil = 50 lb/ft^3

Diameter of the tank = 10 ft ( r = 5 ft)

To calculate the work done, we need to find the mass of the oil and the height it is lifted. Let's start by finding the mass:

Volume of oil in the tank:

The volume of a hemisphere = (2/3) * π * (r^3)

Volume = (2/3) * π * (5^3) = (2/3) * π * 125 = 250π/3 ft^3

Mass of the oil:

Mass = Volume * Density = (250π/3) * 50 lb

Now, we need to find the height of the tank. For a hemisphere, the height is equal to the radius (5 ft).

Finally, we can calculate the work done:

Work = PE = mgh = (250π/3) * 50 lb * 5 ft

Work = (250π/3) * 50 * 5 lb-ft

       = 2500π lb-ft

So, the work done in pumping all the liquid out of the tank is approximately 2500π lb-ft.

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The approximate strength of the magnetic field is 0.194 Tesla. The result is obtained by using the formula for Lorentz Force.

The Lorentz force is the force resulted due to the current in a magnetic field. The formula for the force on a wire in a magnetic field is

F = BIL

where F is the force on the wire, B is the strength of the magnetic field, I is the current in the wire, and L is the length of the wire in the magnetic field.

In this problem, we know that the current in the wire is 8.75A and the maximum force on the wire is 1.28N. We also know that the wire is placed between the poles of a magnet with a diameter of 75.4cm, which means that the length of the wire in the magnetic field is equal to the diameter of the magnet.

So we can rearrange the formula to solve for B:

B = F / (IL)

Substituting the given values, we get:

B = 1.28N / (8.75A × 0.754m)
B = 0.194 T (Tesla)

Therefore, the strength of the magnetic field is approximately 0.194 Tesla.

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Answer:

Explanation:

Given:  

c₁ = 2100 J / (kg·°C)

c₂ = 4200 J / (kg·°C)

λ₁ = 3.4·10⁵ J / kg -

t₁ = -24.2°C

t₀ = 0°C

t₂ = 78.3°C

t = 40.0°C

m₂ = 0.350 kg

___________

m₁ - ?

Ice is heated to 0°C:

Q₁ = c₁·m₁·(t₀ - t₁) = 2100·m₁·(0 - (-24.2)) = 50 820·m₁  J

The ice is melting:

Q₂ = λ·m₁ = 340 000·m₁  J

Cold water is heated:

Q₃ = c₂·m₁·(t - t₀)  = 4200·(40.0 - 0)·m₁ = 168 000 J

Hot water is cooling down:

Q₄ = c₂·m₂·(t₂ - t) = 4200·0,350·(78.3 - 40.0) = 56 300 J

Thermal badance equation:

Q₁ + Q₂ + Q₃ = Q₄

m₁·(50820 + 340 000 + 168 000) = 56 300

m₁·(3 620 000) = 56 300

Mass of ice:

m₁ = 56 300 / 3 620 000 ≈  0,016 kg  or  16 g

The energy transferred by an appliance using mains electricity is 34500 Joule.

In physics, energy is the ability to perform work. It could exist in several different forms, such as potential, kinetic, thermal, electrical, chemical, radioactive, etc. Additionally, there is heat and work, which is energy being transferred from one body to another. Energy is always assigned based on its nature once it has been transmitted.

Given that: charge of the particle: Q = 150 C.

Potential difference applied: V = 230 V.

Hence, the potential energy of the particle: E = QV

= 150 × 230 Joule

= 34500 Joule.

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Answer:

13. (A) 20°

14. (D) 65°

15. (A) 0 m/s

To answer this question, we need to determine the acceleration of the particle by differentiating its position equation twice with respect to time. After finding the acceleration, we can use the force-mass-acceleration relationship to calculate c.

We have the Mass of particle = m = 5 kg

Position of particle, x = 3 + 5t + ct² - 4t³ m

Force on the particle at t = 3 s, F = -33 N (negative direction of the axis)

Using the given equation, we can differentiate to get the acceleration of the particle with respect to time. Taking the Derivative of x with respect to time, we get the velocity of the particle:

v = dx/dt= 5 + 2ct - 12t² ... (i)

Taking the derivative of v with respect to time, we get the acceleration of the particle:

a = dv/dt= 2c - 24t ... (ii)

Now, we can use the relation F = ma to get c.

Therefore, a=F/m

a=-33/5

5(2c - 24t) = 5a

=> 2c - 24t = -33/5

At t = 3 s,

2c - 72 = -33/5

=> c = [(-33/5) + 72]/2= 32.7 m/s²

Therefore, the value of c is 32.7 m/s².

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Answer:

8 × the gravitational attraction

Explanation:

Hope this helps. :)

Answer:

7.45 Ω

Explanation:

From the question given above, the following data were obtained:

Resistor 1 (R₁) = 2.50 Ω

Resistor 2 (R₂) = 4.95 Ω

Voltage (V) = 12 V

Equivalent Resistance (Rₑq) =?

Since the resistors are in series arrangement, the equivalent resistance can be obtained as follow:

Rₑq = R₁ + R₂

Rₑq = 2.5 + 4.95

Rₑq = 7.45 Ω

Therefore, the equivalent resistance is 7.45 Ω

The false statement(s) regarding color indicators are: "A color indicator will always change color exactly at the equivalence point of the titration" and "A color indicator is most effective over a large pH range." Color indicators are indeed used in titrations to signal the completion or neutralization of an acid-base reaction, and they are typically weak acids or bases themselves. However, they don't always change color exactly at the equivalence point, and they are most effective over a narrow pH range.

An acid is a molecule or ion that can donate a proton, or, alternatively, can form a covalent bond with an electron pair. The first category of acids is the proton donor or Brønsted acid. In the special case of an aqueous solution, the proton donor forms the hydronium ion H₃O⁺ and is known as an Arrhenius acid.

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The diffraction grating affects the light from a hydrogen lamp as it produces the separation of the colors of the white light. The spectrum can be viewed through the grating,

ANSWER

Normal force

EXPLANATION

We want to determine what FN would represent on a force diagram.

On a force diagram, FN represents the component of a contact force that acts perpendicular to the surface with which an object makes contact. It is exerted by surfaces and prevents objects from passing through each other.

This force is known as the normal force.

That is the answer.

Answer:

f

Explanation:

Answer:

KE = incident energy - work function

The maximum KE will be (3 - .6) eV = 2.4 eV

The eccentricity of an orbit when both focal points are located at the sun is zero.

What is an orbit?

An orbit is the trajectory, or path, of an object that revolves around another object, the center of mass or a gravitational point. All planets orbit the sun, and the moon orbits the earth, for example, An elliptical orbit is the shape of many planetary orbits.

As a result, the eccentricity of the orbit is significant.

What is Eccentricity?

The degree of circularity of an orbit is referred to as its eccentricity. When the distance between the two foci is divided by the length of the major axis, eccentricity is calculated.

A perfectly circular orbit has an eccentricity of zero.

An ellipse with an eccentricity of 1 is a parabolic orbit. When eccentricity is greater than one, the orbit is hyperbolic.

The eccentricity of an orbit when both focal points are located at the sun:

Since there is only one focus, and the center of the sun is located there, the eccentricity of such an orbit is zero. Because there is only one focus, the distance between the two foci is also zero.

As a result, a planet's orbit with a sun-centered focus is always circular.

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Answer:

When X = 0

Speed = maximum    V (max) = ω A

Acceleration = zero       a(max) = - ω^2 A

From x = A sin ω t        sin = 0     so displacement = zero

V = ω A cos ω t             cos = 1 and speed = maximum

a = - A ω^2 sin ω t            sin = 0 and acceleration = zero

Answer:

temperature inside the balloon so it is warmer than the surrounding air

Explanation:

For the balloon to get an uplift , it should be lighter than air . That means the density of the gas inside should be less than the density of air outside . only then ,  weight of the balloon plus the weight of the air inside balloon  will become less than the weight of displaced air outside . This can be achieved by warming up the air inside. Its temperature must exceed that of outside air.

The option that best explain how the pilot can make the balloon rise is option D. The pilot can increase the temperature inside the balloon so it is warmer than the surrounding air

An object will float in air when the density of the object is lower than the density of the air.

Increase in temperature of a gas decreases the density of the gas.

For the pilot to make the balloon rise, he must find a way to make the balloon more lighter than air. To do this, he has to increase the temperature of the balloon.

In this question, the pilot can increase the temperature inside the balloon so it is warmer than the surrounding air in order for the balloon to quickly rise several feet higher above some trees in distance.

Therefore, option D best explain how the pilot can make the balloon rise.

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Answer:

E=hf

Were, h = Planck constant 6.67*10^11

E=3.8*10^24 * 6.67*10^11= 2.508*q0^36j

The change in velocity experience by a driver, driving a Bugatti Veyron, accelerating at 26.7 m/s² for 2.4 seconds is 64.08 m/s.

Change in velocity is the difference between the final and the initial velocity of a body.

To calculate the change in velocity experienced by the driver, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values above into equation 1

Hence, the change in velocity experienced by the driver is 64.08 m/s.

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The null hypothesis for this test would be that there is no linear relationship between the desire to have cosmetic surgery and the level of body satisfaction. The alternative hypothesis, on the other hand, would be that there is a linear relationship, and that as level of body satisfaction increases, desire for cosmetic surgery decreases.  To conduct this test, you could use a linear regression analysis to see if there is a significant negative slope between the two variables. You would also want to calculate the correlation coefficient and its associated p-value to determine the strength and significance of the relationship.

Assuming a significance level of 0.05, if the p-value is less than 0.05, we would reject the null hypothesis and conclude that there is evidence of a negative linear relationship between the desire for cosmetic surgery and the level of body satisfaction. If the p-value is greater than 0.05, we would fail to reject the null hypothesis and conclude that there is not enough evidence to support a linear relationship between the two variables.

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The tension in the wires is greater when they are not vertical (option B).

When the wires are vertical, they are only supporting the weight of the painting, which is acting straight down due to gravity.

However, when the wires are at an angle, they are not only supporting the weight of the painting but also providing a force to counteract the component of the weight that is acting perpendicular to the direction of the wires.

This means that the wires are under more tension when they are at an angle than when they are vertical.

In other words, the tension in the wires is directly proportional to the angle between the wires and the vertical direction.

The greater the angle, the greater the tension in the wires. This is why it is important to use an appropriate angle when hanging heavy objects with wires, to ensure that the wires are under enough tension to support the weight without breaking.

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The kind of spring should be held constant so as to improve the validity of the experiment.

Hooke's law states that the force that acts on a spring is directly proportional to the extension of the spring as long as the elastic limit is not exceeded.

As such, we can now understand that we can only be able to talk about the Hooke's law if there is no way in which the material has passed the elastic limit of the material. In this case, we are told that the students just embarked on a kind of experiment and they want to be able to verify the validity of the Hooke's law.

We saw that the masses that were hanged were increased but the springs were also changed. This would not allow us to determine the force constant and the Hooke's law accurately.

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Answer: the answer is A, C, E

Explanation:

Time management is apart of your study schedule so you will need to determine when to study, same goes with how to use ur study time, lastly it helps create ur study schedule to help find out what time you are free to study. :)