Through what total distance (in m) has the object moved between t = 0 and t = 18 s?

The elastic potential energy stored in the spring having a spring constant of 50.0 N/m is 16 J

We'll begin by obtaining the extension of the spring. This is given below:

Extension = New length - initial length

Extension = 0.90 - 0.10

Extension = 0.80 m

Finally, we shall determine the potential energy stored by the spring. Details below

PE = ½Ke²

PE = ½ × 50 × 0.8²

PE = 25 × 0.64

PE = 16 J

Thus, from the above calculations, we can conclude that the potential energy stored is 16 J

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Answer:

Below

Explanation:

Speed of sound at 16 degrees C = 340.866 m/s

  (Speed of sound at 0 degrees C is 331.3 m/s   ....I do not know where they got the incorrect value of 345 m/s at 0 °C)

2.5 s   *   340.866 m/s =  852 m away from fireworks

Answer:

it will be A

Explanation:

A.) what is the net upward force acting on the rocket ?

 Moral hazard occurs when someone takes on more risk because they believe they are protected from the negative consequences of that risk. In Johnny's case, having full-coverage health care made him feel less worried about potential injuries, leading him to take up skydiving lessons.

This is an example of moral hazard. Moral hazard is the tendency for people to take more risks when they are protected against the potential consequences of those risks. In this case, Johnny's full-coverage health care has reduced his concern about getting injured, leading him to take up skydiving lessons, which is a risky activity.

                                     The availability of free healthcare has altered Johnny's behavior in a way that he may not have otherwise behaved if he had to pay for health care out of pocket.
                                            Moral hazard occurs when someone takes on more risk because they believe they are protected from the negative consequences of that risk. In Johnny's case, having full-coverage health care made him feel less worried about potential injuries, leading him to take up skydiving lessons.

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Answer:

The correct answers are It is the resistance of an object to changes in its motion, and It is a force

Answer:

it's true...........

The rate of change of the distance between the two particles is 10 units per second.

Let's call the distance between particle A and particle B "d". To find the rate of change of "d", we need to take the derivative of "d" with respect to time. By using the Pythagorean theorem to relate the distance between the two particles to their x and y coordinates:

d^2 = x^2 + y^2

Taking the derivative of both sides with respect to time, we get:

2dd/dt = 2x(dx/dt) + 2y(dy/dt)

where dx/dt is the rate of change of particle A's x-coordinate (which is equal to 2), and dy/dt is the rate of change of particle B's y-coordinate (which is equal to 3).

We need to find x and y in terms of time. Particle A is moving at a constant rate of 2 per second along the positive x-axis, so its x-coordinate is given by:

x = 2t

where t is time in seconds.

Similarly, particle B is moving at a constant rate of 3 per second along the positive y-axis, so its y-coordinate is given by:

y = 3t

Substituting these expressions for x and y into our equation for the rate of change of "d", we get:

2dd/dt = 2(2)(1) + 2(3)(1) = 10

So the rate of change of the distance between the two particles is 10 units per second.

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The ideal gas equation can be changed to demonstrate that the pressure of a sample of gas is directly proportional to the amount of gas present, volume, and temperature being held constant: P=n(RTV)=n×const.

The pressure inside the object increases when medium is added to the newly created area. Because energy is being added during compression, the temperature of the medium may significantly rise or fall.

Therefore, compressing a medium is necessary to raise pressure. Compression reduces the volume of the medium that makes up a thing.

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Answer:

light potential energy is converted into electrical potential energy.

Explanation:

A solar heat absorbs the light that creates pairs of electron - holes, these free charges when moving create a current, the light energy stored in the radiation is converted into electrical energy within the n-p junctions.

In summary, light potential energy is converted into electrical potential energy.

Answer:

Statement of the given problem,

A ball is thrown vertically upwards at 19.6 m/s. For its complete trip (up and back down to the starting position), what is its average speed?

Let H & T denote the maximum height (in m) of the given ball & the time (in s) required for it to reach there.

Hence from above data we get following kinematic relations,

T = [19.6 m/s - 0 m/s)]/(9.8 m/s^2) [9.8 m/s^2 = gravitational acceleration (assumed)]

or T = 2 (s)

H = (19.6 m/s)*(2 s) - (1/2)*(9.8 m/s^2)*(2 s)^2

or H = 19.6 (m)

Therefore,

assuming vertically upward & downward motions are identical with respect to time & distance covered by the given ball,

the required average speed of the ball during its travel up and back down to the starting position

= (total travel-distance)/(total travel-time)

= 2*(19.6 m)/[2*(2 s)]

= 9.8 m/s [Ans]

Neutral atoms must contain equal numbers of option (1) protons and electrons.

Protons carry a positive charge, while electrons carry a negative charge. In an electrically neutral atom, the positive charge of the protons is balanced by the negative charge of the electrons, resulting in a net charge of zero.

The balance between the positive charge of protons and the negative charge of electrons is essential for maintaining the overall neutrality of an atom. If the number of protons and electrons is not equal, the atom becomes charged and is referred to as an ion. Understanding the requirement for an equal number of protons and electrons in neutral atoms is fundamental to the study of atomic structure and the behavior of elements in chemical reactions.

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The magnitude of the impulse will be equal to the magnitude of the momentum change.

The magnitude of impulse can be calculated using the formula:

Impulse = change in momentum

Given that the momentum change has a magnitude of kg-m/s, we can use this value to calculate the magnitude of the impulse.

Impulse = kg-m/s

To find the magnitude of the impulse in n-s (newton-seconds), we can use the fact that 1 N-s is equal to 1 kg-m/s.

So, the magnitude of the impulse will be equal to the magnitude of the momentum change.

Therefore, the magnitude of the impulse is kg-m/s.

To round this answer to the nearest whole number, we can round kg-m/s to the nearest whole number.

In this case, the magnitude of the impulse is 150 n-s.

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Astronomers think that cygnus x-1 contains a black hole because  the unseen object orbited by a luminous star is too massive to be a neutron star and is therefore denoted as option B.

This is referred to as a type of scientists who studies the Universe and the objects within and around it.

Cygnus x-1 is referred to as a galactic X-ray source in the constellation Cygnus and was widely accepted to be a black hole as a result of the unseen object orbited by a luminous star is too massive to be a neutron star.

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The largest producer of primary air pollution in the United States is what? electricity producing plants.

Answer:

electricity production

Explanation:

Answer:

A. The nucleus can be either positively charged or neutral.

Explanation:

The nucleus of an atom contains protons and neutrons only. Whereas electrons revolve around the nucleus. Protons are positively charged, neutrons have no charge and electrons are negatively charged.

Whether your linear regression model fits the data better than a model with no independent variables is determined by the F-test of overall significance.

When we examine how alternative regression statistics, like R-squared, fit with the F-test of overall significance. How well your model fits the data is indicated by R-squared, and the F-test is related to it.

An extremely adaptable statistical test is the F-test. They have a wide range of applications. F-tests can assess the fits of various linear models since they can examine numerous model terms at once. T-tests, on the other hand, can only evaluate one term at a time.

The F-test of overall significance is the hypothesis test for this relationship. If the overall F-test is significant, you can conclude that R-squared does not equal zero, and the correlation between the model and dependent variable is statistically significant.

Therefore, Whether your linear regression model fits the data better than a model with no independent variables is determined by the F-test of overall significance.

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The average speed of gas molecules will increase by a factor of approximately 1.53 when the temperature is increased from 30°C to 160°C.

To determine the factor by which the average speed of gas molecules will increase, we can use the formula for the root-mean-square speed of gas molecules:
v_rms = √(3RT/M), where R is the gas constant, T is the temperature in Kelvin, and M is the molar mass of the gas.
First, we need to convert the temperatures to Kelvin:
30°C + 273.15 = 303.15 K
160°C + 273.15 = 433.15 K
We can now compare the ratios of the square roots of the temperatures:
Factor = √(T2/T1) = √(433.15/303.15) ≈ 1.53

When the temperature of a gas is increased from 30°C to 160°C, the average speed of its molecules will increase by a factor of approximately 1.53.

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Explanation:

v=?, u=0, a=?, S=22m.

Using the formula, S=ut+½at²

22={0×5}+(½.a.5²)

22=½.a.5²

a=44/25 = 1.76m/s².

Therefore, net force = work done = ma = 48×1.76 = 84.48N.

therefore, power = work done/time = 84.48/5 = 16.896W.

hope this helps you.

Answer:

Symbiosis

Explanation:

When you have a symbiotic relationship,  it is between two or more organisms of different species.

Answer:

M2=0.52kg

Explanation:

thats rightt

Answer:

A fuse and circuit breaker both serve to protect an overloaded electrical circuit by interrupting the continuity, or the flow of electricity. ... Fuses tend to be quicker to interrupt the flow of power, but must be replaced after they melt, while circuit breakers can usually simply be reset.

The magnitude of the magnetic field inside the wire is 0.002 T.

Magnetic field can be defined as the area around a magnet in which the effect of magnetism is felt.

By using the Biot-Savart law

B = μ₀NI/2R

We can find the formula for the current carrying a straight wire to find the maximum magnetic force i.e.

B = μ₀i/2πr

diameter of copper wire = d = 0.7 mm = 0.7 × 10⁻³ m

Therefore, r = 0.035 mm = 0.035 × 10⁻³ m

Now, putting this value into equation, we get

B = μ₀×8 / (2*π*0.035×10⁻³)

As we know, μ₀= 4π×10⁻⁷,

B = 4π × 10⁻⁷× 8 / 2 × π × 0.8 × 10⁻³

∴ B = 0.002 T

Magnitude of the magnetic field inside the wire is 0.002 T.

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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 true of an image produced by this mirror will be 2.5 times smaller and virtual. Option C is correct.

When light beams from an object reflect off a mirror, they intersect with the picture of that thing called an image. Real and virtual images are the two sorts of images.

The ratio of xi to xo for a certain mirror is 2.5;

\(\rm \frac{x_i}{x_0} =2.5 \\\ x_i=2.5 x_0\)

Where,

\(\rm x_0\) is the true of an image produced by this mirror.

The true of an image produced by this mirror will be 2.5 times smaller and virtual.

Hence,option C is correct.

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Answer:

9 and 4

Explanation:

The relation is:

● r = s^2 / t^2

Triplind s means multiplying it by 3. Since it's an equation we should multiply both sides by the same number

Let k be the number we should multiply by r

●k* r = (3s)^2 / t^2

●k* r = 9s^2 /t^2

We have multiplied s^2 by 9 so we should do the same for r.

k = 9

■■■■■■■■■■■■■■■■■■■■■■■■■■

Doubling t means multiplying it by 2.

Let x be the number we shoukd multiply by r.

● x* r = s^2/(2t)^2

● x*r = s^2/ 4t^2

We have multiplied t^2 by 4 so we should do the same for r.

x= 4

Answer:

It would lift the object to the same height than before you move it 3 centimeters to the left. You see, the height doesn't change if you move the inclined plane horizontally, because height is a vertical variable.

Therefore, if the inclined plane has a height of 1 meters, then the object will be lifted 1 meters up, no matter if you move the inclined plane 50 meters horizontally, it won't change its height.

Answer:

B

Explanation:

the answer is B, I had the same question in a different phrasing

Answer:

Particle physics

Explanation:

The field of physics that studies particles smaller than the atom is called "particle physics" or "high-energy physics". It is concerned with the study of the fundamental constituents of matter and the interactions between them at extremely high energies. Particle physics investigates the properties and behavior of particles such as quarks, leptons, and bosons, as well as the forces that govern their interactions. Particle accelerators, such as the Large Hadron Collider (LHC), are used to study particles at high energies and reveal the fundamental nature of the universe.

The measurement unit for noise level when rating coolers is typically expressed in decibels (dB).

Noise level is a measure of the intensity of sound, and decibels are commonly used to quantify sound levels. Decibels provide a logarithmic scale to represent the wide range of sound intensities that humans can perceive. When rating coolers, the noise level is measured to evaluate the amount of noise produced by the cooling system.

To understand the significance of decibels, it's important to note that every increase of 10 dB represents a perceived doubling of loudness. For example, if one cooler generates a noise level of 50 dB, and another cooler produces a noise level of 60 dB, the second cooler will be perceived as twice as loud as the first one.

When rating coolers, the noise level is typically measured and expressed in decibels (dB). This unit allows for a standardized and objective way to compare and evaluate the noise output of different cooling systems. Remember that decibels use a logarithmic scale, so even small differences in dB values can result in noticeable differences in perceived loudness. When selecting a cooler, it's important to consider the noise level along with other factors to ensure a suitable balance between cooling performance and noise output.

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Answer:

Decibels

Explanation:

Decibels, being a logarithmic ratio cannot be added or subtracted arithmetically. As an example, if we have 2 quiet cooling fans each rated at 21dB (A), they have a combined noise level of 24dB (A), and NOT 42dB (A).