Sandra is riding a water slide at her favorite water park. At the top of the slide,
she has 5,000 J of gravitational potential energy. After a few seconds, she has
1,928 J of gravitational potential energy. What is her kinetic energy at this point,
in J?

When the mirror is moved so that the tree is between the focus point F and the mirror, the image appears shorter and on the same side of the mirror.This happens because of the phenomenon known as Reflection of Light. The mirror reflects light in such a way that it appears as if the light is coming from behind the mirror.

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Answer:

So, Mercury is the closest planet to the Sun.

Explanation:

Answer:

The best statement which describe this is actually:

D. Temperature decreases with altitude until the stratosphere is reached, and then it increases from there.

Explanation:

From the graph shown, it could be seen that, temperature decrease with height. The higher the height, the lower the temperature. For example, from the graph, when the height was around 50 km, the temperature was within the range of -10⁰C to 0⁰C. On the other hand, when the height increases around 78 km, the temperature decreases to the range of  to -70 ⁰C to -80⁰C

The maximum height will increase by a factor of four when the initial speed is doubled.

When a ball is thrown with an initial speed v at an angle theta above the horizontal, the factors affecting its trajectory include the initial speed, the launch angle, and the acceleration due to gravity. Doubling the initial speed while keeping the launch angle constant will have a significant impact on the ball's motion.

The maximum height reached by the ball depends on the vertical component of its initial velocity. When the speed is doubled, the vertical component of velocity also doubles. Since the height is directly proportional to the square of the initial velocity, doubling the speed results in a fourfold increase in the maximum height.

This can be mathematically explained by breaking down the initial velocity into its horizontal and vertical components. The vertical component determines the time taken to reach maximum height. Doubling the vertical component doubles the time taken to reach maximum height.

The time of flight for the projectile is determined by the time it takes to reach maximum height and double the time of flight.

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The density of a substance that has a mass of 4.0 g and a volume of 1.0 ml is 4.0 g/ml.So option a is correct.

To calculate the density of a substance, we use the formula:

Density = Mass / Volume

Given that the mass of the substance is 4.0 g and the volume is 1.0 ml, we can substitute these values into the formula:

Density = 4.0 g / 1.0 ml

Now, since the density is typically expressed in grams per milliliter (g/ml), the density of the substance is simply 4.0 g/ml.

The density of the substance is 4.0 g/ml.

Therefore option a is correct.

The question should be:

calculate the density of a substance that has a mass of 4.0 g and a volume of 1.0 ml. group of answer choices

(1)4.0 g/ml.

(b)8.0 g/ml.

(c)9.0 g/ml.

(d)7.0 g/ml.

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Answer:

1 Watt

Explanation:

P=W/t

P=10/10

P=1 Watt

Answer:

The answers to this question is:

1. inner ear

2. outer ear

3. middle ear

Explanation:

Hope that helps!

Answer:

inner, outer, middle

Explanation:

To draw the circuit diagram with four 15 ohm resistors connected in a series to a 45-v battery, along with an ammeter and voltmeter, follow the steps below:Step 1: Place the batteryTo begin with, draw the 45 V battery at the top of the page, as shown in the figure below.  Step 2: Add resistorsNext, add the four 15 ohm resistors in a series circuit after the battery, as shown in the figure below.  

Step 3: Add the ammeterIn the circuit, an ammeter is placed in series with the resistors to calculate the total current in the circuit. Connect the ammeter between the last resistor and the negative terminal of the battery, as shown in the figure below.Step 4: Add the voltmeter. Finally, a voltmeter is placed in parallel with the resistors to determine the voltage across them.

Connect the voltmeter in parallel with each resistor, as shown in the figure below. [Figure]Hence, this is how the circuit diagram with four 15 ohm resistors connected in a series to a 45-v battery looks like, along with an ammeter and voltmeter.

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The final speed of the railroad cart is equal to 12 m/s.

According to the law of conservation of momentum, the sum of the momentum before and after the collision of the objects must be equal.

m₁u₁ + m₂u₂ =  m₁ v₁ + m₂ v₂

Where m₁ and m₂ are the mass of the objects, u₁ and u₂ are the initial speed while v₁ & v₂ is the final speed.

The momentum of an object is defined as the product of the mass times the velocity of that object.

Given the mass of the empty cart, m₁ = 200 Kg

The mass of the rock, m₂ = 50 Kg

The initial velocity of the empty cart, u₁ = 0

m₁ u₁ + m₂ u₂ = (m₁ + m₂)× V

200 × 15 + 50 × 0=  (200 + 50) × V

V = 12 m/s

Therefore, the final speed of the railroad cart is equal to 12 m/s.

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A hair dryer has a power rating of 1,265 W at 220 V rms. The resistance of the heating element is 0.0261 ohm, the rms value of current is 4.078 A and maximum instantaneous power will be 632.5 W.

Given,

Power of the hair dryer, P = 1265 W

and Voltage, V = 220 V

The current in the hair dryer, I = P/V (from P=V×I)

I = 1265/220

= 5.75 Amp

The resistance (R) of the heating element can be calculated as;

P= \(V^{2}\)/R

1265= \(220^{2}\)/R

R=1265/\(220^{2}\)

=0.0261 Ohm

(b) The rms value of current, \(I_{rms}\) = I/\(\sqrt{2}\)

= 5.75/\(\sqrt{2}\)

=4.078 A

(c) Maximum instantaneous power that the resistance withstand can be calculated as;

P(t) = (VI)/2

=(220×5.75)/2

=632.5 W

Hence, the resistance of the heating element is 0.0261 ohm, the rms value of current is 4.078 A and maximum instantaneous power will be 632.5 W.

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Answer:

I would be 5 centimeters I think

The helicopter's horizontal distance from the point of takeoff is 979 m after the two legs.

For the first leg,

The length of the path is d = 294 m and the helicopter takes off at an angle of θ = 59.4°

Then,

dₓ = d cos θ

dₓ = 294 × cos 59.4°

dₓ = 147 m

For the second leg,

The length of the path is:

d = 849 m

and the angle of flight is θ = 10.5°.

So,

dₓ = d cos θ

dₓ = 849 × cos 10.5°

dₓ = 832 m

Therefore,

The total horizontal distance will be:

= dₓ ( 1st leg ) +  dₓ ( 2nd leg )

= 147 + 832

= 979 m

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The net magnetic force on each side of triangle will be 0, when A loop of wire has the shape of a right triangle and carries a current of i = 4.10A  .

When a moving charged particle (such an electron or a proton) is placed in a magnetic field, a magnetic force is applied to it. The right-hand rule provides the direction of the magnetic force, which is always perpendicular to the magnetic field and charged particle velocity. The magnetic force acting on a current-carrying wire is the force generated by the magnetic field as a result of the motion of the charges (electron mobility) within the wire. The strength and direction of the magnetic field, the current flowing through the wire, and the orientation of the wire with respect to the magnetic field all affect the magnitude and direction of the magnetic force.

The magnetic force can be calculated by the formula,

F = BI L sinθ

AB ,  θ = -180°

Fab = 0N

For, Fac , θ = 90°

Fac = 1.6× 4.10 ×L× sin90°

ac = AB tan 55°

ac = 2.85m

Fac = 1.6 × 4.10 × 2.85× sin90°

Fac = 18.6N

The above magnetic force into the page is 18.6N. Thus similarly out of the page magnetic field can be calculated as, Fbc = 18.6 N

Fnet = Fab + Fbc +Fac

Fnet = 0 + 18.6 - 18.6

Fnet = 0net

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The complete question is,

A loop of wire has the shape of a right triangle (see the drawing) and carries a current of I = 4.10 A. A uniform magnetic field is directed parallel to side AB and has a magnitude of 1.60 T 55.0 2.00 m (a) Find the magnitude and direction of the magnetic force exerted on each side of the triangle. N directed N directed. Select N directed Select- Select side AC side CB side BA

Answer:

Frictional force will be 150N

The number of bright interference fringes in the central diffraction envelope is 3.

To determine the number of bright interference, we need to understand the equation of first minima in the diffraction pattern, and the equation of angular locations of the double slit interference pattern.

For the equation of first minima in the diffraction pattern is:

\(W\)·\(Sin\)θ = \(m_{1}\)·λ

For the equation of angular locations of the double slit interference pattern is:

\(d\)·\(Sin\)θ = \(m_{2}\)·λ..... (1)

Here, W is single slit width while d is slit separation

Next, we need to determine the number of bright interference fringes in the central diffraction envelope.

For the first minima, \(m_{1} = 1\), then rewrite the equation (1) as follows.

=\(a\)·\(Sin\)θ = \(m_{1}\)·λ

=\(a\)·\(Sin\)θ = \(1\)·λ

=\(a\)·\(Sin\)θ = λ..... (2)

Then, from the equations (1) and (2)

\(=m_{2}=\frac{d}{w} \\=m_{2}=\frac{2w}{w}\\=m_{2}=2\)

Therefore, there are 3 bright fingers, 1 at the centre and 2 in each side.

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Answer: To calculate the mass of the helium sample, we can use the ideal gas law equation, which relates the pressure, volume, temperature, and amount of gas for an ideal gas:

PV = nRT

Where:

P = pressure of the gas

V = volume of the gas

n = amount of gas in moles

R = universal gas constant

T = temperature in Kelvin

Given information:

Pressure (P) = constant pressure during the process

Initial temperature (T1) = 283 K

Final temperature (T2) = 393 K

Work done by the gas (W) = 40 J

Universal gas constant (R) = 8.31451 J/mol · K

Since the pressure is constant, we can rearrange the ideal gas law equation to solve for the amount of gas (n) in moles:

n = (PV) / (RT)

Substituting the given values into the equation:

n = (constant pressure during the process * volume) / (universal gas constant * temperature)

Now we can calculate the amount of gas in moles.

Next, we can convert the amount of gas from moles to grams using the molar mass of helium (He), which is approximately 4 g/mol.

Finally, we can multiply the mass in grams by 1000 to convert it to grams.

Let's plug in the numbers and do the calculations:

P = constant pressure during the process

V = volume of the gas (not given in the question, need additional information)

R = universal gas constant = 8.31451 J/mol · K

T1 = initial temperature = 283 K

T2 = final temperature = 393 K

W = work done by the gas = 40 J

Molar mass of helium (He) = 4 g/mol

Please provide the value for the volume (V) of the helium gas in order to complete the calculation.

Answer:

because of its mass. Momentum is directly propotional to the mass of a body

Answer:

Mass

Explanation:

A tennis ball has a mass of around 57 grams and a cricket ball has a mass of around 156 grams. It's much easier to catch a fast moving tennis ball because it is lighter than a cricket ball. Hope this helps x

Answer:

1. Distance, S = 26.58 meters

2. Acceleration of gravity, g = 58.60 m/s²

Explanation:

1. Given the following data;

Initial velocity = 4.66 m/s

Acceleration = 5.66 m/s²

Time = 2.35 seconds

To find the distance travelled by the object, we would use the second equation of motion;

S = ut + ½at²

Where;

S represents the displacement or height measured in meters.

u represents the initial velocity measured in meters per seconds.

t represents the time measured in seconds.

a represents acceleration measured in meters per seconds square.

Substituting into the equation, we have;

S = 4.66*2.35 + ½*5.66*2.35²

S = 10.951 + (2.83 * 5.5225)

S = 10.951 + 15.629

S = 26.58 meters

2. Given the following data;

Displacement (height) = 1.55 m

Time, t = 0.23 seconds

To find the acceleration of gravity, we would use the following formula;

Height = ½gt²

Substituting into the formula, we have;

1.55 = ½ * g * 0.23²

1.55 = ½ * g * 0.0529

1.55 = 0.02645g

Acceleration of gravity, g = 1.55/0.02645

Acceleration of gravity, g = 58.60 m/s²

Answer:

A stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.

Explanation:

In more simple terms, an electron is a negatively charged subatomic particle.

Hope that helps :)

Answer:

An electron is a particle with negative charge that can be found in the atom, along with neutrons and protons

Answer:

600-750

Explanation:

The red color in the visible region lies in the wavelength of 600 – 750 nm. The visible light spectrum is the fraction of the spectrum that is visible to humans.

The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.

The wavelength is also defined as the distance between two locations in a wave that have the same oscillation phase.

The length of a wave is measured in its propagation direction. The wavelength is measured in meters, centimeters, nanometers, and other units since it is a distance measurement.

The portion of the spectrum visible to the human light is known as the visible light Spectrum.

Visible light has a range of wavelengths from about 400-750 nm. The red color in the visible region lies in the wavelength of 600 – 750 nm.

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Answer:

3m/s²

Explanation:

final velocity - initial velocity

______________________ = Acceleration

           elapsed time

A downhill skier reaches the steepest part of a trail. Her speed increases from 9 m/s to 18 m/s in 3 seconds.  Her average acceleration is 3 m/sec².

The rate at which an item changes its velocity is known as acceleration, a vector quantity. If an object's velocity is changing, it is acceleration.The net acceleration that objects get as a result of the combined action of gravity and centrifugal force is known as the Earth's gravity, or g. It is a vector quantity whose strength or magnitude is determined by the norm and whose direction correlates with a plumb bob.

Average acceleration = (18 -9)/3 = 3 m/sec²

A downhill skier reaches the steepest part of a trail. Her speed increases from 9 m/s to 18 m/s in 3 seconds.  Her average acceleration is 3 m/sec².

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The trip takes a total of 1.5 hours and has an average speed of 40 mph.

To calculate the time taken for each leg of the trip, we can use the formula time = distance/speed.

For the first leg of the trip, the car travels 15 miles at a speed of 45 mph. Using the formula, we find that the time taken for this leg is 15/45 = 0.33 hours.

For the second leg of the trip, the car travels another 15 miles but at a speed of 30 mph. Using the formula, we find that the time taken for this leg is 15/30 = 0.5 hours.

To find the total time for the trip, we add the times for each leg: 0.33 hours + 0.5 hours = 0.83 hours.

To calculate the average speed for the entire trip, we use the formula average speed = total distance/total time. The total distance traveled is 15 miles + 15 miles = 30 miles. The total time taken is 0.83 hours. Plugging these values into the formula, we find that the average speed for the trip is 30/0.83 = 36.14 mph.

Therefore, the trip takes a total of 1.5 hours and has an average speed of 40 mph.

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Answer:

Frequency

Explanation:

A period is the number of revolutions in a minute.

\( Period = \frac {time}{number \; of \; oscillations}\)

Also, frequency can be defined as number of oscillation per unit time.

Mathematically, frequency is given by the formula;

\( Frequency = \frac {number \; of \; oscillations}{time}\)

Thus, we can deduce that frequency of an oscillation is the inverse of the period (time) of oscillation.

Mathematically, period is expressed as;

\( Period = \frac {1}{frequency}\)

This ultimately implies that, an object's period of oscillation can always be used to solve for frequency.

When air rises in a low-pressure system, it can lead to the formation of clouds and precipitation, such as rain or snow. The rising air also cools and condenses, releasing latent heat, which can further contribute to the development of the storm.

A low-pressure system is a weather pattern characterized by a region of lower atmospheric pressure compared to the surrounding areas. It is often associated with unsettled and stormy weather.

Clouds are formed when moist air rises and cools, causing water vapour to condense into tiny water droplets or ice crystals. This process occurs when the temperature of the air decreases, either because it is rising, or because it is mixing with cooler air.

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Answer:

on Pluto or earth go witH u guts mine is always right hope this helps

They have a limited supply in nature, therefore if they are used excessively, they will become exhausted.

Today, we recognise that using fossil fuels has a negative impact on the environment. Fossil fuels produce and utilise local pollutants, and their continued use permanently alters the temperature of our entire world.

Wastes from combustion sources are those that result from carbon pollution (i.e., coal, oil, natural gas). Included in this are all ash and particles taken out of the flue gas.

The fossile fuel is limited in nature. So, it should not waste energy from fossil fuels.

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Answer:

3433.4m

Explanation:

Volume_submerged = (Density_mantle / Density_mountain) * Volume_exposed

Volume_submerged_meters = Volume_submerged / 1000000

Weight_submerged = Density_mantle * Volume_submerged_meters * g

Weight_submerged = Weight_exposed

Density_mantle * Volume_submerged_meters * g = Density_mountain * Volume_exposed * g

Volume_submerged_meters = (Density_mountain / Density_mantle) * Volume_exposed

Volume_submerged_meters = (3.2 g/cm^3 / 4.1 g/cm^3) * 4400 meters

Volume_submerged_meters = (0.7805) * 4400 meters

Therefore, the total height of the mountain is 3433.4 meters.

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