how do you know the pole on the left is the south pole and the pole on the right is the north pole?

Answer:

1.62

Explanation:

comment section (credits to charlizebarth)+ correct on acellus

EMF induced in coil is directly proportional to the rate of change of magnetic flux by the flowing current with n number of turns in it.The total emf generated is 1.62 volts

Given-

Total coils in a solenoid \(N\) is 365 coils.

The change in flux is,

\(d\phi=9.44\times10^{-5} -2.57\times 10^{-5}\)

\(d\phi=6.87\times10^{-5}\)

The change in time \(dt\) is 0.0154 sec.

According to Faraday's law the EMF induced in coil is directly proportional to the rate of change of magnetic flux produced in the coil by the current i flowing in it with conductor having a finite number of turns in it.This can be given as,

\(emf=-N\dfrac{d\phi }{dt}\)

\(emf=-364\times \dfrac{6.87\times 10^{-5}}{0.0154}\)

\(emf= -1.62\)

Hence, the total emf generated is 1.62 volts.

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(a) The normal force on the block is 50.92 N.

(b) The horizontal force on block keeping it in equilibrium is 29.4 N.

The given parameters;

The normal force on the block is calculated as follows;

\(F_n = W \times cos(\theta)\)

where;

\(F_n = mg \times cos(\theta)\\\\F_n = 6 \times 9.8 \times cos(30)\\\\F_n = 50 .92 \ N\)

The horizontal force on block keeping it in equilibrium is calculated as follows;

\(F- F_x = 0\\\\F-mgsin\theta= 0\\\\F = mgsin\theta\\\\F = 6 \times 9.8 \times sin(30)\\\\F = 29.4 \ N\)

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Answer:

Travels through solid materials, and air.... but it can also travel through the vacuum of space

Explanation:

Answer to the question is that when a battery (voltaic cell) is dead, E^o_cell = 0 and Q = 0.

E^o_cell represents the standard cell potential or the maximum potential difference that the battery can produce under standard conditions. When the battery is dead, there is no more energy to be produced, so the cell potential is zero. Q represents the reaction quotient, which is a measure of the extent to which the reactants have been consumed and the products have been formed. When the battery is dead, there is no more reaction occurring, so Q is also zero.

When a battery (voltaic cell) is dead, the direct answer is that E_cell = 0 and Q = K. This means that the cell potential (E_cell) has reached zero, indicating that the battery can no longer produce an electrical current. At this point, the reaction quotient (Q) is equal to the equilibrium constant (K), meaning the reaction is at equilibrium and no more net change will occur.

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you can swing your leg so it can't be kick, and remove up doesn't make sense and dodging it won't get you anywhere, so scooping it

Answer:

1400g/L

Explanation:

Change 25ml into litres.

Use the formula d=m/v

Devide 35g by 0.025L

To calculate the magnitude and duration of the deceleration, we need to know the initial velocity of the child and the stopping distance. The initial velocity of a freely falling object can be calculated using the equation:

v = sqrt(2gh), where g is the acceleration due to gravity (9.8 m/s^2), and h is the height.

In this case, h = 0.57 m, so the initial velocity can be calculated as follows:

v = sqrt(2 * 9.8 * 0.57)

v = 2.38 m/s

Now we have the initial velocity, we can calculate the magnitude and duration of the deceleration in both cases.

Case 1: Hardwood floor

The stopping distance can be calculated using the equation:

d = v^2 / (2a), where v is the initial velocity and a is the deceleration.

Setting the stopping distance equal to 2.1 mm and solving for a, we get:

a = v^2 / (2d)

a = (2.38 m/s)^2 / (2 * 0.0021 m)

a = 68 m/s^2

The duration of the deceleration can be calculated as follows:

t = v / a

t = 2.38 m/s / 68 m/s^2

t = 0.0349 s

Magnitude of the deceleration: 68 m/s^2

Duration of the deceleration: 0.0349 s

Case 2: Carpeted floor

The stopping distance can be calculated using the equation:

d = v^2 / (2a), where v is the initial velocity and a is the deceleration.

Setting the stopping distance equal to 1.4 cm and solving for a, we get:

a = v^2 / (2d)

a = (2.38 m/s)^2 / (2 * 0.014 m)

a = 12 m/s^2

The duration of the deceleration can be calculated as follows:

t = v / a

t = 2.38 m/s / 12 m/s^2

t = 0.198 s

Magnitude of the deceleration: 12 m/s^2

Duration of the deceleration: 0.198 s

The magnitude of the deceleration in the first case (hardwood floor) is much greater than in the second case (carpeted floor), indicating a higher risk of injury for the child in the first case. However, the duration of the deceleration is much shorter in the first case, which might result in a less severe injury. The duration of the deceleration is also much longer in the second case, indicating a lower risk of injury.

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Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

f is the force

m is the mass

From the question we have

\(a = \frac{35}{5200} = 0.006730 \\ \)

We have the final answer as

Hope this helps you

Part (a)

The potential energy of the block due to its height can be given as,

The potential energy due to presence of spring can be expressed as,

Equating both the values,

Substitute the known values,

Thus, the maximum compression of the spring is 0.253 m.

Part (b)

Since the slide is frictionless, therefore no energy loss happened during the sliding of block. Therefore, the block will rise up to the same initial height which is 0.500 m.

Melissa observed with the rice dancing is an interesting phenomenon called the Chladni effect.

When she placed the aluminum pie pan with a shallow layer of rice over the speaker on the radio and turned up the volume, the sound waves produced by the speaker caused the pan and the rice to vibrate.Sound waves are actually vibrations that travel through a medium, in this case, the air. When the speaker emits sound waves, they hit the pan, causing it to vibrate. These vibrations are then transferred to the rice, making it move and dance on the pan's surface.

The reason the rice gathers into patterns is due to the specific frequencies of the sound waves. Each frequency creates a unique standing wave pattern on the pan's surface. These patterns form areas of high and low vibrations, causing the rice to gather in the areas of least vibration, resulting in visible patterns.So, in simple terms, the rice dances due to the vibrations caused by the sound waves produced by the speaker. The Chladni effect helps us visualize and understand how sound waves interact with different objects and create patterns. I hope this explanation helps! Let me know if you have any further questions.

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Answer:For a bell-shaped data set, approximately 68% of the data will be in the interval μ - σ to μ + σ, where μ is the mean of the data and σ is the standard deviation. This is known as the "68-95-99.7 rule" or the empirical rule, which applies to any normal distribution or approximately normal distribution. Specifically, approximately 68% of the data falls within one standard deviation of the mean (μ ± σ), approximately 95% falls within two standard deviations (μ ± 2σ), and approximately 99.7% falls within three standard deviations (μ ± 3σ).

Explanation:

For a bell-shaped or normally distributed data set, about 68% of the data will fall within the range of mean minus standard deviation (μ - σ) to mean plus standard deviation (μ + σ). The mean is the average of the data set and the standard deviation measures how spread out the data points are from the mean.

In statistics, if a data set follows a bell shape or normal distribution, approximately 68% of the data points will lie within the interval μ -σ to μ +σ. Here, μ denotes the mean (or average) of the data set, and σ denotes the standard deviation, which measures the dispersion of the data points from the mean. This principle is often referred to as the 68-95-99.7 rule or the empirical rule. This rule states that nearly all (about 99.7%) of the data will fall within three standard deviations from the mean.

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When you mix 100 pounds of soil with 100 pounds of KCl, the resulting soil would have a pH near 7.0.

This is because KCl is a neutral salt and does not affect the pH of the soil. The modest CEC of the soil means that it has a relatively low capacity to retain positively charged ions such as K+. Therefore, adding KCl would not significantly affect the pH of the soil. The resulting soil would have a similar pH to the original soil, but it may have a slightly higher pH due to the dilution effect of adding more material. However, the pH increase would be minimal and would not make the soil moderately alkaline (pH 7.5 to 8.5) or calcareous.

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Hurricanes spin as they move due to a phenomenon known as the Coriolis effect, which is caused by the Earth's rotation. The Coriolis effect is a result of the fact that different parts of the Earth rotate at different speeds.

Specifically, the Earth rotates more rapidly at the equator than at the poles.

As air moves from high-pressure areas to low-pressure areas, it is deflected by the Coriolis effect. In the case of a hurricane, the low-pressure area at the center of the storm causes air to flow inward from all directions. As the air moves toward the center of the storm, it is deflected to the right (in the Northern Hemisphere) due to the Coriolis effect. This deflection causes the air to start rotating counterclockwise around the center of the storm.

The rotation of the hurricane becomes more pronounced as the storm gains strength and size, with the wind speed increasing as the storm's pressure drops. The direction of rotation is determined by the hemisphere the storm is in, with hurricanes in the Northern Hemisphere rotating counterclockwise and hurricanes in the Southern Hemisphere rotating clockwise. The rotation of a hurricane is also affected by other factors such as the shape of the coastline and the temperature of the water, but the Coriolis effect is the main cause of the storm's rotation.

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Answer:

25 N  in the direction of your push

Explanation:

The friction force acts against your pushing force....it reduces the net amount of force you are exerting

Net force =  40 - 15 = 25 N  

Explanation:

distance=16km=16000m

time=0.25hours=1/4hr=15min=900sec

speed=dist./time

=16000/900=160/9=17.777m/s

speed=17.78m/s (rounded)

Answer:

64

Explanation:

Avg. speed = total distance/total time

Avg. speed= 16km/0.25h

Avg. speed= 64km/h

Answer:

it has 3 electrons. brainliest please

Answer:

net force=applied force

Explanation:

...........................................

Answer:

N = 2490 N

Explanation:

Determine the upward force exerted by the horizontal platform on the box as it is lowered.

It is given that,

Mass of a box, m = 300 kg

Starting from rest at time t = 0 seconds, the box is lowered with a downward acceleration of 1.5 m/s².

It is assumed to find the upward force exerted by the horizontal platform on the box. It is given by :

mg-N=ma

\(N=m(g-a)\\\\N=300\left(9.8-1.5\right)\\\\N=2490\ N\)

So, the normal force is 2490 N.

Answer:

7.2V

Explanation:

Find the equivalent resistance:

Req = 10 ohms + 15 ohms = 25 ohms

Use ohm's law to find the current:

V = IR

12V = I(25 ohms)

I = .48 amps

Multiple the current with the value of R2 to get the voltage drop:

.48amps x 15 ohms = 7.2V

Answer:

An electric field is essentially a force field that’s created around an electrically charged particle. A magnetic field is one that’s created around a permanent magnetic substance or a moving electrically charged object.

Electric fields are created by electric charges.

Permanent magnets are objects that produce their own persistent magnetic fields.

in electric fields Positive and negative charged objects attract or pull each other together, while similar charged objects (2 positives or 2 negatives) repel or push each other apart

in magnetic fields, Similar magnetic poles repel and unlike magnetic poles attract each other.

Attach a wire running from the negative terminal of the battery to one sheet and a wire running from the positive terminal of the battery to the other sheet

A magnetic field can be created by running electricity through a wire. All magnetic fields are created by moving charged particles. Even the magnet on your fridge is magnetic because it contains electrons that are constantly moving around inside

If "0.3 minute" is correct, then it's 9,543,272 Joules.

If it's supposed to say "0.3 SECOND", then the KE is 2,651 Joules.

The major difference between a bimetallic stemmed thermometer and a thermistor is the principle of temperature measurement they utilize.

A bimetallic stemmed thermometer consists of two different metals bonded together. These metals have different coefficients of thermal expansion, causing the strip to bend when exposed to temperature changes. The degree of bending is proportional to the temperature, allowing the measurement of temperature based on the mechanical deformation of the bimetallic strip.

On the other hand, a thermistor is a type of temperature sensor that relies on the change in electrical resistance with temperature. Thermistors are typically made of semiconductor materials that exhibit a significant change in resistance as the temperature varies. The resistance of a thermistor decreases as the temperature increases, and vice versa. This change in resistance is used to measure and indicate the temperature.

In summary, while a bimetallic stemmed thermometer operates based on the mechanical deformation of a bimetallic strip, a thermistor measures temperature by monitoring the change in electrical resistance. Each type of thermometer has its advantages and applications based on the specific temperature range, accuracy requirements, and sensitivity needed in various contexts.

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Answer:

rotation

Explanation:

............................

Answer: 2nd option, Rotation

I hope this helps, and Stay Safe! :)

Explanation:

1) Nitrogenous base

2) Pentose sugar

3) One or more phosphate group

Answer:

43.58kg

Explanation:

The equation F=ma will help here.

F=ma

523N=m(12m/s^2)

43.58kg=m

Based on the given information, the temperature at your station in Houston is likely to decrease in the next 2 hours due to the constant temperature advection and is estimated to be 63.04ºF (16.8ºC).

Given the wind speed of 10 m/s from the west-northwest, we can use the concept of wind advection to adjust the temperature gradient based on the speed and direction of the wind.

First, we need to convert the wind speed from meters per second to kilometers per hour, as the temperature gradient is typically expressed in degrees per kilometer.

10 m/s is equivalent to 36 kilometers per hour (10 m/s * 3.6 km/h).

Next, we can adjust the temperature gradient based on the wind speed. The temperature change due to advection is typically estimated using a rule of thumb, which suggests that for each 10 kilometers per hour of wind speed, the temperature change is approximately 1 degree Celsius (or 1.8 degrees Fahrenheit) over a distance of 100 kilometers.

In this case, with a wind speed of 36 kilometers per hour, the adjusted temperature change due to advection would be approximately 3.6 degrees Celsius (or 6.48 degrees Fahrenheit) over a distance of 100 kilometers.

Now, let's calculate the temperature change at your station in Houston after 2 hours using the adjusted temperature gradient.

Temperature change = Adjusted temperature gradient × Distance × Time

Temperature change = 3.6°C/200 km * 200 km * 2 hours

Calculating the result, the temperature at your station in Houston is estimated to decrease by 7.2 degrees Celsius (or 12.96 degrees Fahrenheit) after 2 hours.

To find the final temperature at your station, subtract this temperature change from the initial temperature of 76ºF (24ºC):

Final temperature = Initial temperature - Temperature change

Final temperature = 76ºF (24ºC) - 12.96ºF (7.2ºC)

The estimated final temperature at your station in Houston after 2 hours is approximately 63.04ºF (16.8ºC).

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(105 N/m) x (0.1 m)  =  10.5 Newtons.

Answer:

(105 N/m) x (0.1 m) = 10.5 Newtons.

Explanation:

apex quiz

Answer:

ΔP = - 1.2 Ns

Explanation:

The change in momentum of the hammer head can be given as follows:

\(\Delta P = P_f - P_i\\\)

where,

ΔP = Change in Momentum = ?

Pf = Final Momentum

Pi - Initial Momentum

Therefore,

\(\Delta P = mv_f - mv_i\\\Delta P = m(v_f - v_i)\)

where,

m = mass of hammer head = 0.15 kg

vf = final speed of hammer = 0 m/s

vi = initial speed of hammer = 8 m/s

Therefore,

\(\Delta P = (0.15\ kg)(0\ m/s-8\ m/s)\)

ΔP = - 1.2 Ns

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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