Shelby the Skater's rocket provides a forward force of
220 Newtons. Shelby has a mass of 60. kg. If friction
provides a resistive force of 30. Newtons, then at what
rate does Shelby accelerate? Show all work.

Answer:Δx=v0t + 1/2 at 2

The root mean square speed of the air molecules is 500 m/s.

The term root mean square speed has to do with the average speed of the molecules of a gas. In this case, we need to find the root mean square speed by the use of the pressure and the density of the gas. We have to use the relation;

Root mean square speed = √3 * pressure/ Density

Since 1 Pa = 1 N/m^2

1 x 10^5pa = 1 x 10^5 N/m^2

Then we can now substitute the values;

Root mean square speed = √3 * 1 x 10^5 N/m^2/ 1.2kg/m3

= 500 m/s

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Answer:

Below

Explanation:

Final velocity (m/s ) - Initial velocity (m/s)     is the change in velocity

    this will be units of   m/s

   then change in velocity ( m/s)  / change in time (s) = accel ( m/s^2 )

unit of work is joules

power - watt

energy - joules

The solubility of lead nitrate is 52 grams per 100 milliliters of water at 0°C. Since the question does not specify the temperature, we will assume it is 0°C.To calculate the number of millimeters of water required to dissolve 5 g of lead nitrate,

we must first calculate the number of milliliters of water required to dissolve 5 g of lead nitrate.52 grams of lead nitrate can dissolve in 100 milliliters of water. So,5 g of lead nitrate can dissolve in x milliliters of water.= (5 g / 52 g) × 100 mL= 9.6 mLTherefore, 5 g of lead nitrate can dissolve in 9.6 mL of water. However, the question is asking for the number of millimeters of water, not milliliters. Since 1 milliliter of water weighs 1 gram,9.6 milliliters of water will weigh 9.6 grams.Thus, 5 g of lead nitrate can dissolve in 9.6 millimeters of water.

main answer:5 g of lead nitrate can dissolve in 9.6 millimeters of water. :52 grams of lead nitrate can dissolve in 100 milliliters of water. So, 5 g of lead nitrate can dissolve in x milliliters of water.= (5 g / 52 g) × 100 mL= 9.6 mLTherefore, 5 g of lead nitrate can dissolve in 9.6 mL of water. However, the question is asking for the number of millimeters of water, not milliliters. Since 1 milliliter of water weighs 1 gram,9.6 milliliters of water will weigh 9.6 grams.Thus, 5 g of lead nitrate can dissolve in 9.6 millimeters of water.

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Answer:

A

Explanation:

I only think its A because of the gravity part...sorry im not good at explaining

The final pressure in the tanks will be determined by the partial pressures of the gases and their respective mole fractions.

When the valve connecting tanks A and B is opened, the CO and N2 gases mix together to form a homogeneous mixture. According to Dalton's Law of Partial Pressures, the total pressure exerted by this mixture is equal to the sum of the partial pressures of each gas. In this case, we need to calculate the partial pressures of CO and N2.

To determine the partial pressures, we first calculate the number of moles of CO and N2 in tanks A and B using the ideal gas law. This involves considering the mass, temperature, and molar mass of each gas. By dividing the number of moles of each gas by the total number of moles in the mixture, we obtain their respective mole fractions.

With the mole fractions in hand, we can calculate the partial pressures of CO and N2 by multiplying their mole fractions by the total pressure in the tanks. Adding these partial pressures together gives us the final pressure in the tanks.

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from,

F = ma

F is directly proportional to a

a is inversely proportional to m

that is the larger the force the higher the a

the smaller the mass the higher the a

increase the force. decrease the mass.

Explanation:

Fourteen yard (14) yard

Answer: 37.326 kg

Explanation:
KE = 1/2 mv2,
1/2 m1(v1i)2 + 1/2 m2(vi)2 = 1/2 m1(v1f)2 + 1/2 m2 (v2f)
0.5*60*(5.6)^2 = 0/6*x*(7.1)^2
x = 37.3259

The resultant is the vector sum of two or more vectors. It is the result of adding two or more vectors together. ... If two or more velocity vectors are added, then the result is a resultant velocity. If two or more force vectors are added, then the result is a resultant force.

The predicted received power at a distance of 2 miles is -44 dBm

The received power in near earth propagation can be predicted using the inverse square law. The inverse square law states that the power received at a given distance is inversely proportional to the square of the distance. In other words, if the distance is doubled, the received power is reduced by a factor of 4.

In this case, the received power at 4 miles is -50 dBm. To predict the received power at 2 miles, we can use the inverse square law:

Received power at 2 miles = Received power at 4 miles + 10*log10(4/2)^2

= -50 dBm + 10*log10(2)^2

= -50 dBm + 6 dB

= -44 dBm

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The statement, "The Voyager 1 space probe can't change its own motion" is correct and true. The Voyager 1 space probe was launched by NASA in 1977, and since then it has traveled over 14 billion miles away from Earth. It's the most distant spacecraft from Earth.

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The horizontal distance travelled by the football is 3.1 m.

The angle of projection of the football is calculated as follows;

tan ( θ ) = Vy / Vx

where;

tan ( θ ) = 5 / 3

tan ( θ ) = 1.667

θ = arc tan (1.667)

θ = 59⁰

The resultant velocity of the ball is calculated as follows;

v = √ (Vx² + Vy²)

v = √ (3² + 5²)

v = 5.83 m/s

The horizontal distance travelled by the football is calculated as follows;

x = v² sin(2θ) /g

where;

x = [ (5.83)² sin(2 x 59) /9.8 ]

x = 3.1 m

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Answer:

Lithification is the answer.

Answer:

True

Explanation:

Volcanically-caused long period earthquakes are produced by vibrations generated by the movement of magma or other fluids within the volcano. Pressure within the system increases and the surrounding rock fails, creating small earthquakes.

An object falling through space by the force of gravity reaches a terminal velocity speed of 9.8m/\(s^{2}\)

Terminal velocity Near the surface of the Earth, any object falling freely will have an acceleration of about 9.8 metres per second squared (m/s2).

What is Terminal Velocity?

Terminal velocity is the maximum velocity (speed) attainable by an object as it falls through a fluid (air is the most common example).

It occurs when the sum of the drag force (Fd) and the buoyancy is equal to the downward force of gravity (FG) acting on the object.

Since the net force on the object is zero, the object has zero acceleration.

At terminal velocity, the object moves at a steady speed in a constant direction because the resultant force acting on it is zero.

In fluid dynamics an object is moving at its terminal velocity if its speed is constant due to the restraining force exerted by the fluid through which it is moving.

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Answer:

yes.................

Answer:

action = reaction

land accepts

reaction force acts on the apple

Answer:

15 Newton

Explanation:

According to Newton's third law of motion, "Every action has a reaction which is equal in magnitude but opposite in direction" (Right now, we're not talking about direction, so we'll ignore it)

So,

Action Force = Reaction Force

Reaction Force = 15 N

The action force is by the Earth on the Apple, So the reaction force will be by the Apple on the Earth.

Answer:

Eletromagnetic radiation which is also known as visible light.

Explanation:

Answer:

Gamma Ray's as they have the shortest wavelength and highest frequency in the electromagnetic Spectrum.

Answer:

time

Explanation:

power = work done ÷ time

Answer:

Batteries are intended to store chemical energy and then it converts into electricidal energy. So overall, batteries produce energy.

Explanation:

Answer:

D is the Answer

Explanation:

I know D is the answer because I calculated it and got answer choice D

The frequency of oscillation for the spring system of part i is 0.719 Hz.

Explanation: The frequency of a system is a measure of the number of cycles it completes per second, which is proportional to the square root of the ratio of the spring constant to the mass of the system.

In this case, the spring constant is given as k=2.5 N/m and the mass of the system is given as m=0.35 kg. Plugging these values into the equation for frequency, we get frequency (f) = 1/2π * sqrt(k/m) = 1/2π * sqrt(2.5/0.35) = 0.719 Hz. This result can be rounded to three decimal places, giving us 0.719 Hz.

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Answer:

In a transverse wave, the matter is displaced perpendicular (at a right angle) to the direction of energy flow. Therefore, the correct answer is D.

Explanation:

The flaw in the experiment on water recycling is that the student did not see water dripping off the glass plate as expected. To correct this flaw, the student should use a cold glass plate instead of a hot glass plate.

The correct option to the given question is option 4.

When the student holds the hot glass plate above the beaker, the water vapor in the atmosphere will come into contact with the cold surface of the plate and condense, forming water droplets. However, if the glass plate is already hot, it will not be able to cool down the water vapor quickly enough for condensation to occur.

By using a cold glass plate, the temperature difference between the plate and the water vapor will be greater, allowing for faster condensation. This will result in water droplets forming on the glass plate and dripping off, demonstrating the process of water recycling through the atmosphere.

Therefore, the correct method to correct the flaw in this experiment is to use a cold glass plate instead of a hot glass plate. This will enable the student to observe water droplets on the glass plate as expected.

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a) The speed and centripetal acceleration of a person situated at the equator is 463.3 m/s and 3.39 m/s^2.

b)  The speed and centripetal acceleration of a person situated at the latitude of 63.0° north of the equator is 308.5 m/s and 2.06 m/s^2

(a) At the equator, a person is situated at a distance of 6.38 x 10^6 meters from the center of the Earth, and the radius of the Earth is the same at this point. The speed of the person can be calculated using the formula:

v = ωr

where ω is the angular velocity of the Earth, and r is the distance from the center of the Earth. The angular velocity of the Earth can be calculated as the angle swept per unit time, which is 2π radians per day or 7.27 x 10^-5 radians per second.

Substituting these values, we get:

v = 7.27 x 10^-5 x 6.38 x 10^6

v = 463.3 m/s

The centripetal acceleration can be calculated using the formula:

a = v^2/r

Substituting the values, we get:

a = (463.3)^2/6.38 x 10^6

a = 3.39 m/s^2

(b) At a latitude of 63.0° north, the person is situated at a distance of r = 6.38 x 10^6 x cos(63.0°) from the center of the Earth. The speed of the person can be calculated using the same formula as before:

v = ωr

Substituting the values, we get:

v = 7.27 x 10^-5 x 6.38 x 10^6 x cos(63.0°)

v = 308.5 m/s

The centripetal acceleration can be calculated using the same formula as before:

a = v^2/r

Substituting the values, we get:

a = (308.5)^2/(6.38 x 10^6 x cos(63.0°))

a = 2.06 m/s^2

In summary, the speed and centripetal acceleration of a person situated at the equator and a latitude of 63.0° north of the equator can be calculated using the formulas v = ωr and a = v^2/r, where ω is the angular velocity of the Earth, r is the distance from the center of the Earth, and v is the speed of the person.

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Answer:

h = 4.905 m

Explanation:

In order to find the distance covered by the object in 1 second, we can use the second equation of motion:

\(h = v_i t + \frac{1}{2}gt^2\\\)

where,

h = distance covered = ?

vi = initial speed = 0 m/s

g = acceleration due to gravity = 9.81 m/s²

t = time = 1 s

Therefore,

\(h = (0\ m/s)(1\ s)+\frac{1}{2}(9.81\ m/s^2)(1\ s)^2\\\\\)

h = 4.905 m

Answer:

The cha-cha-cha, is a dance of Cuban origin. It is danced to the music of the same name introduced by Cuban composer and violinist Enrique Jorrin in the early 1950s. This rhythm was developed from the danzón-mambo

A wave crest arrives on the shore a median of every 10. zero seconds, so the frequency is 0. one hundred Hz. The average speed of the waves is 1.five m/s.

We are to decide the common pace of the waves.

Using the formula

v = fλ

Where

v is the speed

f is the frequency

and λ is the wavelength

From the given information

f = 0.1 Hz

λ = 15.0 m

∴ Speed of the wave = 0.1 × 15.0

Speed of the wave = 1.5 m/s

Average speed is defined as the total distance traveled by an object divided by the time taken to cover that distance. It is the measure of the average rate at which an object covers a certain distance in a given amount of time. Mathematically, the average speed is expressed as: Average speed = Total distance traveled / Time taken

It is important to note that average speed is not the same as instantaneous speed, which refers to the speed of an object at a particular instant in time. Average speed takes into consideration the entire adventure, while instant velocity only reflects the velocity at a unmarried moment. The unit of measurement for average speed is meters per second (m/s) or kilometers per hour (km/h), depending on the system of measurement used.

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