79. A woman stands on a bathroom scale in an elevator that is not moving. The scale reads 500 N. The elevator then moves downward at a constant velocity of 5 m/s. What does the scale read while the elevator descends with constant velocity?A) 100 NB) 250 NC) 500 ND) 600 NE) 750 N

the correct answer is probably 70km

When,a man stands still on a moving walkway that is going at a speed of 0.2 m/s to the west,then the velocity of the man according to a stationary observer would be 0.2 m/s west,Therefore, the correct answer would be option B.

The total displacement covered by any object per unit of time is known as velocity. The velocity of an object is depend on the magnitude as well as the direction of the object.

the mathematical expression for velocity is given by

velocity = total displacement /time

The speed and velocity of the object are very different from each other because speed does not depend upon the direction of the moving  object but velocity depends on the magnitude of speed as well as the direction of the moving object.

As per given in the problem a man stands still on a moving walkway that is going at a speed of 0.2 m/s to the west therefore from the perspective  of a stationary observer the velocity of man would be 0.2 m/s towards West.

Hence the correct options for the problem would be option B.

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Answer:

what exactly are the following?

Explanation: for the one that is labeled as "Plan" just type what your plan is of the design and just label it. For the one labeled "Test", just type out step by step how it works or how to make it work ig, and the last one, just describe it, like what is it, how it works/how to get it to work. It seems pretty ez but it doesn't give a lot of info so I don't have a lot to say

The value of the spring stiffness constant is 1250 N/m.

To determine the value of the spring stiffness constant, we can use Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement from its equilibrium position.

The equation for Hooke's Law is F = -kx, where F is the force, k is the spring stiffness constant, and x is the displacement.

In this case, the work done to compress the spring is equal to the potential energy stored in the spring, given by W = (1/2)kx^2. We are given that the work done is 3.0 J and the displacement is 0.12 m.

Substituting these values into the equation, we have

3.0 J = (1/2)k(0.12 m)^2.

Solving for k, we get k

= (2 * 3.0 J) / (0.12 m)^2

= 1250 N/m.

Therefore, the value of the spring stiffness constant is 1250 N/m.

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The spring stiffness constant, also known as the spring constant or the force constant, represents the relationship between the force applied to a spring and its displacement. In this case, we can determine the value of the spring stiffness constant using the work done to compress the spring and the distance of compression.

Given that it takes 3.0 J of work to compress the spring a distance of 0.12 m, we can use the formula for work done on a spring: work = (1/2) * k * x^2, where k represents the spring stiffness constant and x is the distance of compression.

Rearranging the formula, we have k = (2 * work) / x^2. Plugging in the values, we get k = (2 * 3.0 J) / (0.12 m)^2.

Calculating further, we find k = 416.67 N/m. This is the value of the spring stiffness constant for the given mass-spring system.

In summary, the main answer to your question is that the value of the spring stiffness constant is 416.67 N/m.

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At the highest point of the track, the kinetic energy is zero. As the skater descends the track, the kinetic energy increases.

To match the kinetic energy to the position of a skater on a track, we need to understand how kinetic energy changes with respect to the skater's position. Kinetic energy is given by the equation:

KE = (1/2) * m * v^2

where KE is the kinetic energy, m is the mass of the skater, and v is the velocity of the skater.

At the highest point of the track: At the highest point of the track, the skater's potential energy is maximized while the kinetic energy is minimized. The skater is momentarily at rest at the highest point of the track, so the kinetic energy is zero.

Descending the track: As the skater descends the track, the potential energy decreases and is converted into kinetic energy. The skater's speed increases, resulting in an increase in kinetic energy. The kinetic energy is higher than at the highest point of the track but still less than the potential energy.

At the bottom of the track: At the bottom of the track, the skater's potential energy is minimized and converted entirely into kinetic energy. The skater's speed is at its maximum, resulting in the highest kinetic energy. The kinetic energy at the bottom of the track is the maximum.

Ascending the track: As the skater ascends the track, the potential energy increases while the kinetic energy decreases. The skater's speed decreases, resulting in a decrease in kinetic energy. The kinetic energy is lower than at the bottom of the track but still greater than at the highest point.

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Answer:

"we both attract each other with the same force but we know that attraction between two bodies depends upon their mass, greater the mass of two bodies is the force of attraction between them"(got this off the internet).

Part (a) To calculate the momentum of the elephant, we can use the formula:

Momentum = mass * velocity

Given:

Mass of the elephant = 2200 kg

Velocity of the elephant = 6.5 m/s

Momentum = 2200 kg * 6.5 m/s

Momentum ≈ 14300 kg·m/s

Therefore, the momentum of the elephant is approximately 14300 kg·m/s.

Part (b) To determine how many times larger the elephant's momentum is compared to the momentum of the tranquilizer dart, we can calculate the ratio of their momenta:

Momentum ratio = (Momentum of the elephant) / (Momentum of the tranquilizer dart)

Given:

Mass of the tranquilizer dart = 0.0405 kg

Velocity of the tranquilizer dart = 290 m/s

Momentum of the tranquilizer dart = 0.0405 kg * 290 m/s

Now, we can calculate the momentum ratio:

Momentum ratio = (14300 kg·m/s) / (0.0405 kg * 290 m/s)

Calculating the expression, we find:

Momentum ratio ≈ 1591.36

Therefore, the elephant's momentum is approximately 1591.36 times larger than the momentum of the tranquilizer dart.

Part (c) To calculate the momentum of the hunter, we can use the same formula as in part (a):

Momentum = mass * velocity

Given:

Mass of the hunter = 85 kg

Velocity of the hunter = 4.95 m/s

Momentum = 85 kg * 4.95 m/s

Momentum ≈ 420.75 kg·m/s

Therefore, the momentum of the hunter is approximately 420.75 kg·m/s.

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'''In a series circuit, the sum of the voltages consumed by each individual resistance is equal to the source voltage. Components connected in parallel are connected along multiple paths so that the current can split up; the same voltage is applied to each component.''

Compound interest:

\(a = p( 1 + \frac{r}{n} ) { }^{nt} \)

a = final amount

p = principal amount

r = rate of interest

t = time

n = no. of compounding periods per year

p = 10000

r = 5% = 5/100 = 0.05

t = 2

n = 1

\(a = 10000(1 + \frac{0.05}{1} ) {}^{2 \times 1} \)

\(a = 10000(1 + 0.05) {}^{2} \)

\(a = 10000(1.05) {}^{2} \)

\(a = 10000(1.1025)\)

\(a = 11025\)

Answer:

b. Because the southern pole of the Earth's magnet is in the north.

Explanation:

This is very weird to think about but Earth's southern magnetic pole is in Earth's geographic north. So when compass points north, it is actually getting attracted to the southern magnetic pole (that is actually located in the north direction- geographic location- in earth).

In order to get a stone slab to move, one would have to apply force to it. This can be done in a number of ways, depending on the situation. Here are a few possible laws that could be proposed for moving a stone slab:1. Newton's first law of motion: This law states that an object at rest will stay at rest unless acted upon by an external force. Therefore, to move a stone slab, one would need to apply a force to it.

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Answer:

Potential gravitational energy is the energy that the body has due to the Earth's gravitational attraction. In this way, the potential gravitational energy depends on the position of the body in relation to a reference level.

Explanation:

Answer:

the amount of each charge and the distance between them. ... Coulomb's law states the the electric force between two charges is proportional to the product of the two charges and inversally proportional to the square distance that separates their centers.

Option C is the correct answer that indicates the direction of the electric field at point P. The electric field is in the -y direction because electric fields point away from the positive charge and toward the negative charge.

In this scenario, point P is closer to the positively charged plate, so it experiences a stronger electric field towards the negatively charged plate. Since the electric field is a vector quantity, it has both magnitude and direction. The electric field direction is determined by the direction of the force that a positive test charge would experience when placed at that point.
Option A is incorrect because the equal and opposite charges cancel out the electric field at the midpoint, but it does not determine the direction of the electric field at point P.
Option B is incorrect because the distance from the positively charged plate does not determine the direction of the electric field. The electric field direction is determined by the charge distribution around point P.
Option D is incorrect because it assumes that there is a negative charge present near point P, which is not mentioned in the question.

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An electric field that does not vary in time can arise when the charges creating the field are stationary or are moving at a constant velocity.

In other words, if the charges are not accelerating, then the electric field they create will not vary in time. However, if the charges are accelerating or changing direction, then the electric field will vary in time. An electric field that does not vary in time, also known as a static electric field, can arise when there is a constant distribution of electric charges or when the charges are not in motion. In this scenario, the electric field remains constant over time because the charges' positions and magnitudes do not change.

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Answer: if the door knob is metal the static electricity will exit your body, but shock you in the process

Explanation:

To find the saturation specific humidity (SSH) of a parcel of air, we need to consider its saturation mixing ratio at different temperatures.

Let's go through the calculations step by step.

Given:

Temperature at the Earth's surface = 85 degrees Fahrenheit

Temperature at height of condensation = 75 degrees Fahrenheit

We know that the saturation mixing ratio represents the maximum amount of water vapor the air can hold at a specific temperature. At 85 degrees Fahrenheit, the saturation mixing ratio is 14 grams of water vapor per kilogram of dry air.

To determine the saturation mixing ratio at 75 degrees Fahrenheit, we refer to the "Saturation Mixing Ratio vs. Temperature" chart or equation. Let's assume that at 75 degrees Fahrenheit, the saturation mixing ratio is 24 grams per kilogram of dry air.

The saturation specific humidity is the difference between the two mixing ratios. In this case, it is:

SSH = 24 grams/kg - 14 grams/kg = 10 grams/kg

The SSH is expressed as a percentage of the saturation mixing ratio at the height of condensation. Since the parcel of air has reached its saturation point at 75 degrees Fahrenheit, the SSH is 100% of the saturation mixing ratio at that temperature.

Therefore, the correct answer is option D (100%).

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This statement is True-  in a driven LCR circuit, the peak value for voltage does not occur at the same time as the peak value for current. they are separated by some phase angle.

An LCR circuit is an electrical circuit that consists of an inductor (L), capacitor (C), and resistor (R) linked in series or parallel. It is also referred to as a tuned circuit, resonant circuit, or LCR circuit. Phasors provide a better framework for understanding the LCR circuit analysis. A spinning quantity is a phasor.

A crucial illustration of a resonant circuit is the LCR circuit. At resonance, the phase angle is equal to zero and the impedance is at its lowest value, Z=R. To control the amount of light emitted by electronic devices like computers, televisions, and smartphones, the LCR circuit is a component of these gadgets.

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Answer:

Explanation:

We are basically needing to solve for the time in the equation d = rt, where d is the distance around Mars (aka the circumference), r is the velocity, and t is time. We need to find the circumference and the velocity. We will begin with the velocity.

Because the gravitational attraction between Phobos and Mars provides the centripetal acceleration necessary to keep Phobos in its (sort of) circular path, the equation we use for this is:

\(F_g=F_c\) which says that Force supplied by gravity is equal to the centripetal force. Expanding that:

\(\frac{Gm_{Phobos}m_{Mars}}{r^2}=\frac{m_{Phobos}v^2}{r}\)

When we move that around mathematically to solve for the velocity value, what we end up with is:

\(v=\sqrt{\frac{Gm_{Mars}}{r}\) and filling in:

\(v=\sqrt{\frac{(6.67*10^{-11})(6.42*10^{23})}{9.38*10^6} }\) and we get that

v = 2100 m/s

Now for the circumference:

C = 2πr and

C = 2(3.1415)(9.38 × 10⁶) so

C = 5.9 × 10⁷

Putting that all together in the C = vT equation:

5.9 × 10⁷ = 2100T so

T = 2.8 × 10⁴ sec or 7.8 hours

Answer:

monochromator

Explanation:

If Jason wants to conserve energy, he could ride the bus to and from work.

The law of Conservation of energy states that energy cannot be created nor destroyed but can be changed from one form to another.

There is no net change in conserving energy.

Thus, Jason conserves energy by riding the bus to and from work.

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If a cell does not terminate signal transduction, it could lead to uncontrolled cellular processes, resulting in cell dysfunction or disease.

Signal transduction is essential for cells to communicate and respond to external stimuli. In a typical signal transduction process, a signal molecule (ligand) binds to a receptor, which activates a series of proteins (known as a signaling cascade) within the cell. These proteins ultimately trigger a specific cellular response. To maintain normal cell functioning, signal transduction must be regulated and eventually terminated.

If the termination of signal transduction is impaired or does not occur, the signaling cascade continues to activate cellular responses, leading to abnormal or uncontrolled cellular processes. Prolonged activation of the signaling pathway can cause several issues, such as cell overgrowth, excessive inflammation, or changes in cell differentiation. In some cases, this can lead to the development of diseases like cancer, autoimmune disorders, or neurodegenerative diseases. Proper regulation and termination of signal transduction are crucial for maintaining cellular homeostasis and preventing harmful consequences.

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Answer: force

Explanation:

Wave speed is equal to wavelength divided by period. The wave height refers to the vertical distance between the crest (highest point) and trough (lowest point) of a wave.

The frequency refers to the number of waves that pass a certain point in a given amount of time. The wavelength is the distance between two consecutive crests or troughs of a wave. However, none of these terms are directly related to the calculation of wave speed, which is determined by dividing the wavelength by the period (the time it takes for one full wave cycle to pass a given point).

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The negative work done means the kinetic energy of the object decreases instead of increasing.

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The index of refraction of water at this wavelength is 1.33 and the wavelength of the same light in air is 549 nm.

a. The index of refraction of water can be calculated using the formula n = c/v,

where n is the index of refraction, c is the speed of light in a vacuum 3× (\(10^8\) m/s), and v is the speed of light in the medium (water in this case).

Plugging in the given values, we get:

n = (3x\(10^8\) m/s)/(2.26x\(10^8\) m/s) = 1.33

Therefore, the index of refraction of water at this wavelength is 1.33.

b. The speed of light in air is approximately the same as the speed of light in a vacuum, so we can use the same formula as before to calculate the wavelength of the light in air:

n = c/v

Solving for wavelength in air:

v = c/n

wavelength in air = v/frequency = c/(n*frequency)

Since the frequency of the light remains constant as it passes through different media, we can use the wavelength in water (413 nm) and the index of refraction of water (1.33) to calculate the wavelength in air:

wavelength in air = (1.33)(413 nm) = 549 nm

Therefore, the wavelength of the same light in air is 549 nm.

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Answer:

1, 2, 3, 4

Explanation:

Just did it on Edge

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Answer:

1234 is correct

Explanation: