refraction of sound can occur in a) air. b) water. c) both air and water. d) neither air nor water.

Answer:

C. scientific law

Explanation:

Hypothesis is a testable explanation and theory is  kind of like a hunch that has not been tested. so I think C is the best answer

The minimum coefficient of static friction required for the car to maintain its constant speed is,

μs = v²/rg

The minimum coefficient of static friction required for the car to maintain its constant speed at point D in the loop-the-loop can be found by using the formula:

μs = F/N
Where:

μs is the coefficient of static friction
F is the force of friction
N is the normal force

At point D, the normal force is equal to the force of gravity, so we can substitute mg for N:

μs = F/mg

Since the car is moving at a constant speed, the force of friction is equal to the centripetal force:

μs = mv²/rmg

Simplifying gives us:

μs = v²/rg

Therefore, the minimum coefficient of static friction required for the car to maintain its constant speed at point D in the loop-the-loop is equal to

The square of the car's velocity divided by the product of the radius of the loop and the acceleration due to gravity.

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Answer:

A:  Scientists generally agree that global warming is taking place.

Explanation:

A is right because according to Wikipedia, 99% of scientific papers written on Climate change all concluded that Climate change is happening due to human effects,

B is wrong because Climate Change leads to large amounts of environmental disasters along with a decrease in human health, so scientists would not want more.

C is wrong because Climate Change is causing damage that may soon be irreversible. Change would want to be taken now. The thing more people would disagree on is what to change, or how much to change.

D is wrong because cutting down trees and burning fossil fuels do hurt the environment, and help speed up the effects of global warming. Trees are important as a carbon sink, taking carbon out of the air. Burning fossil fuels puts chemicals, metals, and greenhouse gasses (which are bad)

For more information: https://en.wikipedia.org/wiki/Climate_change

The height at which the diver must jump in other to hit the water with a speed of 24 m/s is 29.4 m.

The height of the player above the ground can be calculated using the formula below.

Where:

From the question,

⇒ Given:

⇒ Substitute these values into equation 1

⇒ Solve for s.

Hence, The height at which the diver must jump in other to hit the water with a speed of 24 m/s is 29.4 m.

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At time t, the velocity v(t) is 4 cos(t) cm/s and the acceleration a(t) is -4 sin(t) cm/s² and At time t = 2π/3, the particle is moving to the left (in the negative direction) since the velocity, v(2π/3), is negative (-2 cm/s).

(a) To find the velocity and acceleration at time t, we need to differentiate the equation of motion, x(t), with respect to time.

x(t) = 4 sin(t)

Velocity, v(t), is the derivative of x(t) with respect to time:

v(t) = d/dt [4 sin(t)]

= 4 cos(t)

Acceleration, a(t), is the derivative of velocity, v(t), with respect to time:

a(t) = d/dt [4 cos(t)]

= -4 sin(t)

(b) To find the position, velocity, and acceleration at time t = 2π/3, we substitute t = 2π/3 into the given equation of motion, velocity, and acceleration formulas.

Position, x(2π/3):

x(2π/3) = 4 sin(2π/3)

= 4 sin(120°)

= 4 (sqrt(3)/2)

= 2√3 cm

Velocity, v(2π/3):

v(2π/3) = 4 cos(2π/3)

= 4 cos(120°)

= 4 (-1/2)

= -2 cm/s

Acceleration, a(2π/3):

a(2π/3) = -4 sin(2π/3)

= -4 sin(120°)

= -4 (sqrt(3)/2)

= -2√3 cm/s²

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When creating a listing on the MLS (Multiple Listing Service), it is essential to adhere to specific rules and guidelines.

Here are some generally allowed practices according to most MLS guidelines:

Accuracy and Truthfulness: Provide precise and truthful information about the property in the listing. It should accurately represent the property's features, condition, and availability.

Current and Up-to-date: Ensure that the property is currently available for sale or lease and that the information provided in the listing is current and up-to-date. Any changes in availability or status should be promptly reflected.

Multiple Images: Include multiple images of the property in the listing. However, the images should not be misleading or misrepresent the property's condition or features.

Compliance with Laws: Ensure that the listing complies with fair housing laws and other relevant laws and regulations. Avoid any discriminatory language or practices that may violate fair housing guidelines.

Complete and Error-free: Ensure that all data fields in the listing are completed accurately and there are no errors or omissions in the information provided.

By following these guidelines, the MLS listing can effectively and transparently present the property, attracting potential buyers or tenants while maintaining compliance with applicable laws and regulations.

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The magnitude of his velocity relative to the earth.

|V|=sqrt(Vx^2 + Vy^2) = 4.87 m/s

Velocity defines the direction of movement of a body or object. Velocity is primarily a scalar quantity. Velocity is basically a vector quantity. Rate of change of distance. Rate of change of displacement.

Velocity is defined as a vector measurement of speed and direction of motion. Simply put, velocity is the speed at which something moves in one direction.

Distance traveled by the body per unit of time. It is the distance a body moves in a particular direction per unit of time. There is only size. Not only the direction but also the size.

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The magnification of the image of Julitha Barber produced by the converging mirror is 0.0979

To find the magnification of the image, we need to use the formula:

magnification = -v/u,

where v is the distance of the image from the mirror, and u is the distance of the object from the mirror. Since the object is Julitha Barber standing at a distance of 553 m, we can take u as -553 m (negative because the object is on the same side as the mirror).
Now, we need to find the distance of the image from the mirror (v). For this, we can use the mirror formula: 1/v + 1/u = 1/f, where f is the focal length of the mirror, and is equal to half the radius of curvature (f = R/2). So, in this case, f = 1.20 × 102 m/2 = 60 m. Substituting the values in the formula, we get:
1/v + 1/-553 = 1/60
Solving for v, we get v = -54.12 m. (Note that the negative sign indicates that the image is virtual and upright.)
Now, we can use the magnification formula to find the magnification of the image:
magnification = -v/u = -(-55.6)/553 = 0.0979  (rounded to one decimal place)
Therefore, the magnification of the image of Julitha Barber produced by the converging mirror is 0.0.0979. This means that the image is 10 times smaller than the actual object and is virtual and upright.

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The average energy density of the solar component of electromagnetic radiation at this location is determined as 2.58 x 10⁻⁶ J.

The average energy density of the solar component of electromagnetic radiation at this location is calculated as follows;

U(avg) = (Brms)²/μ₀

U(avg) = (1.8 x 10⁻⁶)² / (4π x 10⁻⁷)

U(avg) = 2.58 x 10⁻⁶ J

Thus, the average energy density of the solar component of electromagnetic radiation at this location is determined as 2.58 x 10⁻⁶ J.

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Answer:

5238747643782 mph

Explanation:

i assure u it is

Answer:

Digital signals are a more reliable form of transmitting information because an error in the amplitude or frequency value would have to be very large in order to cause a jump to a different value. Signals are composed of infinite possible values. Signals are composed of only two possible values: 0 or 1.

Explanation:

Answer:

Its the first option

Melting point

Well we know that if we freeze something, it will turn into a solid right? If it was boiling point, it would be steam, so your answer would be Melting Point

Hope this helps you out!

The frequency at which the dipole oscillates for tiny angular displacements is 1/2π x √PE/I.

T = PxE

PEsinФ = I α

for small angles Ф = sinФ

so, PEФ/I = α

so time period T = 2π/√PE/I

so f = 1/T = 1/2π x √PE/I

Free-space electric dipole radiation. The oscillating electric dipole is perhaps the most significant generator of electromagnetic radiation. The electric dipole moment in a localised source takes the form where is the complex amplitude when the current density oscillates harmonically with angular frequency.

An electric dipole is located in an electric field of constant intensity, E, with moment of inertia I and dipole moment p. The angular frequency of the dipole's oscillations is 112 pf 1/2 PE) 3/2 pE if it is somewhat out of equilibrium.

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Answer:The energy of nuclear fission is released as kinetic energy of the fission products and fragments, and as electromagnetic radiation in the form of gamma rays; in a nuclear reactor, the energy is converted to heat as the particles and gamma rays collide with the atoms that make up the reactor and its working fluid.

Hope this helps!! Brainlist plz?

Answer:

Explanation:

operantly conditioned; positively reinforced

Quantitative data are measurements or numerical data that can be assigned a mathematical value. The option that best describes quantitative data is the one that involves numerical values. Thus, the correct answer is: c) The pendulum made 17 full swings in 30 seconds.

Explanation: The option c): The pendulum made 17 full swings in 30 seconds is the best example of quantitative data because it involves numerical values. It's an exact measurement and can be calculated by dividing the number of swings by the time taken.

For example, If the pendulum made 17 full swings in 30 seconds, we can calculate the average number of swings per second by dividing 17 by 30. Thus, the answer is: 17/30 = 0.57 swings per second.Other options, such as

a) There were fewer drops on the penny dipped in soap than the one dipped in oil.

b) The barn contains pigs, cows, and horses, and

d) There is a bad odor coming from the test tube. This does not involve numerical values. Hence, they are not examples of quantitative data.

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Answer:

0.8 x 10^-9 kg

Explanation:

Given,

Distance ( R ) = 10 m

Force ( F ) = 3.2 x 10^-9 N

Mass ( m1 ) = 40 kg

To find : Mass ( m2 ) = ?

Formula : -

F = m1.m2 / R^2

m2 = FR^2 / m1

= 3.2 x 10^-9 x 10 / 40

= 3.2 x 10^-9 / 4

= ( 3.2 / 4 ) x 10^-9

m2 = 0.8 x 10^-9 kg

Answer: The pressure at the bottom : 19600 N/m²

Answer:

2-3-1-4

Explanation:

First you will need an energy source so 2 is the first step.

Then the lead and lead oxide are reformed during re-charge so 3 is the second step.

The battery is back in operation when Lead dissolves in acid so 1 is the third step.

Battery produces electrons so 4 is the final step.

The three main approaches to the identification of unknown bacteria are as follows:Phenotypic identification, Molecular identification and Biochemical identification

1. Phenotypic identification

Phenotypic identification involves the physical and chemical characteristics of the bacterial colonies and cells. In this method, bacterial cells are studied through microscopy, their ability to grow on various types of media, cellular morphology, and other factors that are easy to observe.

2. Biochemical identification

Biochemical identification is based on the biochemical reactions of bacteria. This method involves the use of different chemical and biochemical tests to identify the bacteria. The tests are designed to identify specific enzymes or metabolic pathways. The results of the tests are then used to identify the bacteria.

3. Molecular identification

Molecular identification involves the use of DNA analysis to identify bacteria. In this method, the DNA of the bacterial cells is isolated and analyzed. This method has become popular in recent years due to its accuracy and speed.

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Answer:

4. The choose b. 0.000355

Ans; 3.55× 10-⁴ = 0.000355

5. The choose C. 80600

Ans; 8.06 ×10⁴= 806×10² = 80600

I hope I helped you^_^

Answer:

A

Explanation:

This is to do with convection currents :)

Hope this helps!

Answer:

The extreme pressure from the weight of the gases that make up the Sun raises the temperature of the core enough for the nuclear reactions to take place, Which law best describes this behavior of gases in the Sun? A. Charles law.

Explanation:

if it is helpful....... plzz like and follow

(a) The average velocity of the ball is 22 m/s.

(b) The centripetal acceleration of the ball is 276.35 m/s².

The average velocity of the ball is calculated by applying the following formula.

v = ωr

where;

v = ( 120 rev/min x 2π rad/rev x 1 min/60s) x 1.75 m

v = 22 m/s

The centripetal acceleration of the ball is calculated as follows;

a = v² / r

a = ( 22² ) / 1.75

a = 276.35 m/s²

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In order to calculate a planet's orbital period, we must know the dimensions of its orbit. The correct answer is C.

To calculate a planet's orbital period, we need to know the dimensions of its orbit, specifically the semi-major axis. The semi-major axis is the average distance between the planet and its parent star (assuming a circular or nearly circular orbit). The orbital period of a planet is determined by its distance from the star and the mass of the star.

The tilt of the planet's axis (option A) affects the planet's seasons but does not directly impact its orbital period. The radius of the planet (option B) is not directly related to its orbital period either. The velocity of the planet (option D) can vary along its orbit, but it is not sufficient on its own to calculate the orbital period. Hence the correct answer is C.

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Answer:    7.94

7.94

Explanation: i got u

Two speakers, A and B, produce identical sound waves. A listener is 3.20 m from speaker A. The listener is  2.367 meters away from speaker B.

The distance between a listener and a speaker for constructive interference is given by:

Distance = (m × λ) ÷ 2

The speed of the sound is given by:

v = f × λ

Where:

v is the speed of sound

f is the frequency (72.4 Hz)

The wavelength obtained is:

λ = v ÷ f

λ = 343 ÷ 72.4

λ = 4.734 m

Since the listener is experiencing constructive interference, the order of interference (m) is likely 1:

Distance = (m × λ) ÷ 2

Distance = (1 × 4.734) ÷ 2

Distance = 2.367 m

Therefore, the listener is  2.367 meters away from speaker B.

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Answer:

no

Explanation: