A skydiver dives from an airplane. air resistance is measured each second following the skydiver’s jump.
Time after jump | Weight | Air Resistance
1 sec | 500 N | 200 N
2 sec | 500 N | 300 N
3 sec | 500 N | 400 N
4 sec | 500 N | 500 N
Which statement best identifies her speed at each second?
a. The skydriver has the slowest speed at 2 seconds
b. The skydriver has the fastest speed at 4 seconds
c. The skydriver has the slowest speed at 1 second
d. The skydriver has the fastest speed at # seconds

Answer:

a stone rock

Explanation:

The metamorphic rock is produced by great heat and pressure and is never melted.  

• The rock, which get changed from one kind to another is known as the metamorphic rock.  

• It is produced from either sedimentary rock or igneous rock, the majority of the Earth's crust is formed of metamorphic rock.  

• The sedimentary and igneous rock turn into metamorphic rock due to intense heat from magma and pressure from tectonic shifting.  

• The rock in spite of becoming extremely hot and under a lot of pressure does not get melt. If it gets melt it is not a metamorphic rock, it is an igneous rock.  

• The metamorphism makes the composition and texture of the mineral to change. The formation of new textures takes place due to the process known as recrystallization.  

Thus, the rock is the metamorphic rock.

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Hi, you've asked an incomplete question. However, I assumed you want additional comments about this scenario.

Explanation:

Note, the term Major as used in academic contexts refers to a person's preferred interest or specialization at college or university.

Hence, the statement about Bryce appears to be contradictory, since we are told he "has little interest in understanding public relations".

The vector force the wall is applying to the boy is -15 N; option D

A reaction force is a force which is equal in magnitude but oppositely directed to a force acting in a particular direction.

The reaction force on the boy is equal in magnitude to the weight of the boy but has an opposite direction.

In conclusion, the vector force applied by the wall on the boy is -15 N.

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Answer:

W = F * S    = Newtons * Distance = Joules (definition)

Joules and KiloJoules are obviously methods of describing energy

F = M a = kg * m / s^2       definition of force

F * S = kg * m^2 / s^2     also describes work

Answer:

Your answer is:

A.) Joules

B.) Kilogram meters2/seconds2

D.) Kilojoules

Explanation:

I did the assignment "Reflect on the Lab" on Edge, 2022.

(See the attachment below.)

Hope this helped, good luck on your quiz! <3

When comparing the distances between objects and the sizes of objects, the most similar comparisons can be made between C. stars in a galaxy and D. galaxies themselves.

Stars are large objects that emit light and heat, while galaxies are collections of stars, dust, and gas held together by gravity. Both stars and galaxies come in a variety of sizes, with some being much larger and more massive than others. However, in terms of the distances between objects, stars, and galaxies are much more similar.

Although galaxies can be quite large, the distances between them are so great that they appear as mere dots of light in the night sky. Similarly, the distances between stars are so vast that even the closest star to Earth, Proxima Centauri, is over 4 light-years away. As a result, when making comparisons between the distances and sizes of objects, it is most appropriate to compare stars in a galaxy to galaxies themselves. Therefore the correct option is C and D

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Answer:

A, B, C, E

Explanation:

Who wants to be shipped out, am I right?

Answer:

It would be equal pay, equal treatment, access to credit

AND access to higher education.

Explanation:

Hope this helps you!!!!

Answer:

C. Newton's First Law of Motion

Explanation:

As the car comes to an abrupt stop, the body is still moving forward, and is moved back by the seatbelt, an outside force. If not for the seatbelt, the body would continue forward until acted on by the car itself, or thrown out of the car.

Answer:

1st law

Explanation:

Given data:

Speed of baseball, v = 22 m/s

(a) Calculation of the height reached by baseball: We can use the formula for height: `h = u^2/(2*g)`where u is the initial velocity and g is acceleration due to gravity. u = 22 m/s (initial velocity)g = 9.8 m/s² (acceleration due to gravity)h = ?Now, put the given values in the above formula and solve it: h = (22 m/s)²/(2 * 9.8 m/s²) = 25.05 m

Therefore, the height reached by baseball is 25.05 m.

(b) Calculation of the time taken by baseball: We can use the formula for time: `t = v/u` where v is the final velocity and u is initial velocity. u = 22 m/s (initial velocity)v = 0 m/s (final velocity)Now, put the given values in the above formula and solve it: t = v/u = 0/22 = 0 s

Therefore, the time taken by baseball is 0 s.

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\( \underline{ \bf{\underline{\large{Terminal \: Velocity}}}}\)

Answer:398.5 watts

Explanation:

Answer:

f = 5 Hz

Explanation:

use f = speed / wavelength

f = 100 m/s / 20 m

f = 5 Hz

Hi there!

We can use Ohm's law to solve:
\(V = IR\)

V = Potential Difference (V)
I = Current (A)
R = Resistance (Ω)

We can rearrange the equation to solve for resistance:

\(R = \frac{V}{I}\)

Plug in the given values to solve.  

\(R = \frac{10}{2} = \boxed{5 \Omega}\)

Starburst galaxies is simply known as the rate at which the galaxy is now converting gas into stars. The statement that is not a general characteristic of starburst galaxies is that The "starburst" is thought to be caused by the presence of a supermassive black hole in the galaxy's center.

They are known to be rare. A starburst is known to be an astrophysical process. It is the process of star formation happening at a rate that is large when compared to the rate that is often observed.

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Which is not a general characteristic of starburst galaxies?

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The new velocity is < 2 , 15 , 0 >.

What is velocity?
The rate at which an object's position changes in relation to a reference frame and time is what is meant by velocity. Although it may sound complicated, velocity is simply the act of moving quickly in one direction. Since it is a vector quantity, the definition of velocity requires both magnitude (speed) as well as direction. Its SI equivalent is the metre per second (ms-1). A body is said to be accelerating if the magnitude or direction of its velocity changes.

Impulse, P = F * t
= < 10, 0, 0 >*0.3
= < 3 , 0 , 0 >
So, change in velocity, v f - v i = P / m
So, v f - < 0 , 15 , 0 > = < 3, 0 , 0 >/1.5 = < 2 , 0 , 0 >
So, v f = < 2 , 15 , 0 >

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Thermal energy is transferred between objects only when they have different temperatures.

The movement of atoms and molecules within a substance is a form of energy known as thermal energy.

When two objects are in contact, or even in proximity, the atoms and molecules in the hotter object collide with those in the colder object.

Because of these effects, a portion of the kinetic energy from the more sizzling object is moved to the colder object, raising the temperature of the previous and bringing down the temperature of the last option.

A material's thermal conductivity — an estimation of how well it moves heat — decides how rapidly heat is moved between various sorts of materials.

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0.8604651 Volts are present between the metal mast and the plastic tube. An electrical or electronic circuit's voltage, measured in volts, is the difference in electrical potential between two points.

Explanation:

Voltage = energy/charge

              = 3.7/4.3

               = 0.8604651.

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Answer:

B) Decreases

Explanation:

Gravitational force is inversely proportional to distance. As distance between 2 objects increase, gravitational force between the 2 objects decreases.

Hope this helps!

Answer:

The answer would be B

Explanation:

Answer:

A) P = W / t = 6000 / 60 = 100 J/s == 100 watts

B) P = I V = .05 * 240 = 12 watts

C)  Bulb B) uses much less power

Answer:

convection thermal energy causes ocean currents?

Answer:

Ionic bonds are formed between cation and anions . A cation is formed when a metal ion loses valence electron while an anion is formed when a non-metal gains a valence electron.

ANSWER

Normal force

EXPLANATION

We want to determine what FN would represent on a force diagram.

On a force diagram, FN represents the component of a contact force that acts perpendicular to the surface with which an object makes contact. It is exerted by surfaces and prevents objects from passing through each other.

This force is known as the normal force.

That is the answer.

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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To find the x and y coordinates of the center of mass for the system of these three objects, we need to calculate the weighted average of the x and y coordinates of each individual object.

First, let's label the objects:
- Pipe wrench: mass = 2.3 kg
- Hatchet: mass = 1.5 kg
- Hammer: mass = 1.0 kg

Next, let's denote the x and y coordinates of each object's center of mass on the graph:
- Pipe wrench: (x1, y1)
- Hatchet: (x2, y2)
- Hammer: (x3, y3)

To calculate the x coordinate of the center of mass (x_cm), we use the formula:
x_cm = (m1*x1 + m2*x2 + m3*x3) / (m1 + m2 + m3)

Substituting the given values, we get:
x_cm = (2.3*x1 + 1.5*x2 + 1.0*x3) / (2.3 + 1.5 + 1.0)

Similarly, to calculate the y coordinate of the center of mass (y_cm), we use the formula:
y_cm = (m1*y1 + m2*y2 + m3*y3) / (m1 + m2 + m3)

Substituting the given values, we get:
y_cm = (2.3*y1 + 1.5*y2 + 1.0*y3) / (2.3 + 1.5 + 1.0)

By plugging in the specific x and y coordinates for each object, you can calculate the x_cm and y_cm values for the system of these three objects.

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Answer:

During the experiment, alpha particles bombarded a thin piece of gold foil. The alpha particles were expected to pass easily through the gold foil. ... The discovery of the nucleus was a result of Rutherford's observation that a small percentage of the positively charged particles bombarding the metal's surface...

Explanation:

jayfeather friend me

Rutherford's model of atoms describes the atom as a tiny, dense particle which contains a positively charged nucleus with electrons which are negative charged moving in orbitals.

Rutherford's model of atoms described the atom as a tiny, dense, positively charged core particle which is called a nucleus, in which nearly all the mass of the atom is concentrated, around within the nucleus which the light, negative constituents, called electrons, circulate at some specific distance, much like the planets which are revolving around the Sun.

During the Rutherford's experiment, the alpha particles are bombarded on the thin piece of gold foil. The alpha particles were expected to pass easily through this gold foil. The discovery of the nucleus of atom was a result of the Rutherford's observation in which a small percentage of the positively charged particles that is protons bombarding on the metal's surface.

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Answer:

The speed the car must travel to experience no friction is approximately 16.9 m/s

Explanation:

The car and road data are;

The mass of the car, m = 1,200 kg

The radius of the road, r = 80 meters

Given that the angled at which the road is banked, θ = 20°

The friction between the tires and the road, at the required speed, \(\mu_s\) = 0, No friction

We have;

\(\dfrac{v^2}{r \cdot g} = \dfrac{\left( sin \, \theta + \mu_s \cdot cos \, \theta \right)}{\left( cos\, \theta + \mu_s \cdot sin\, \theta \right)}\)

Where \(\mu_s\) = 0, we get;

\(\dfrac{v^2}{r \cdot g} = \dfrac{ sin}{ cos} = tan \, \theta\)

∴ v² = r·g·tan(θ)

Where;

g = The acceleration due to gravity ≈ 9.81 m/s²

v = The speed at which the car travels

∴ v² = 80 m × 9.81 m/s² × tan(20°) = 285.64384 m²/s²

v = √(285.64384 m²/s²) ≈ 16.9 m/s

The speed with which the car must travel to experience no friction, v ≈ 16.9 m/s

The equally spaced dots shows a car if it were accelerating constantly.

The term acceleration has to do with the rate of change of the velocity of a body with time. We know that velocity is a vector quantity. This implies that both the magnitude and the direction of the velocity are all important. The same goes for acceleration. The acceleration is a vector quantity so both its magnitude and direction are deemed as important.

Now we know that if the acceleration is uniform or constant, the velocity would increase by equal amounts in equal time intervals. We now have to check out to see the cases in which the image suggests that the velocity changes by equal amounts in equal time intervals.

Looking at the image as attached, the dots are equally spaced. The equal spacing of the dots shows us the way and manner in which the velocity of the car increases. Thus the image attached shows us that the velocity does increase by equal amounts in equal time intervals.

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The critical speed below which the rope would become slack when the bucket reaches the highest point in the circle is determined by the length of the rope and the radius of the circle.

When the bucket is at the highest point in the circle, it is momentarily at rest and the tension in the rope must be zero.

The formula for calculating the critical speed at which the rope becomes slack is:

v = √(gr)

where v is the critical speed, g is the acceleration due to gravity, and r is the radius of the circle.

For example, if the radius of the circle is 2 meters and the acceleration due to gravity is 9.8 m/s², the critical speed would be:

v = √(9.8 × 2) = 4.4 m/s

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The energy of a photon that is emitted when the electron in a hydrogen atom undergoes a transition from the n = 7 energy level to produce a line in the Paschen series is 3.69 x 10^-19 J.

The formula for calculating the energy of a photon emitted during a transition is given by the following expression:E = hfwhere E is the energy of the photon, h is Planck's constant, and f is the frequency of the emitted radiation. We can relate the frequency of emitted radiation to the initial and final energy levels of the electron by the following equation:ΔE = Ef - Ei = hfwhere ΔE is the difference between the final and initial energy levels of the electron, and Ef and Ei are the energies of the final and initial states, respectively.

The Paschen series, we have n1 = 3, and n2 > 3. Therefore, the initial energy level of the electron is Ei = -2.42 x 10^-19 J (calculated using the energy level formula), and the final energy level of the electron is given by the energy level formula for n2 = 7:Ef = -2.06 x 10^-20 JUsing these values, we can calculate the energy of the emitted photon:E = Ef - Ei = (-2.06 x 10^-20) - (-2.42 x 10^-19) = 3.69 x 10^-19 JTherefore, the energy of the photon emitted during this transition is 3.69 x 10^-19 J.

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To find the energy of the photon emitted during the electron transition in a hydrogen atom from the n=7 energy level to the Paschen series, we can use the equation: E = En - Em. By substituting the values of n=7 and n=4 into the equation, we can find the energy En and Em and then find the difference between them to calculate the energy of the emitted photon.

To find the energy of the photon emitted during the electron transition in a hydrogen atom from the n=7 energy level to the Paschen series, we can use the equation:

E = En - Em

Where En is the energy of the n=7 energy level and Em is the energy of the Paschen series. The energy of a specific energy level in a hydrogen atom can be calculated using the equation:

E = -13.6 eV / n2

By substituting the values of n=7 and n=4 into the equation, we can find the energy En and Em and then find the difference between them to calculate the energy of the emitted photon.

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Answer:

Acidic

Explanation:

pH 1 to 6 = acidic

pH 7 = neutral

pH 8 to 14 = basic

Answer: Acidic

Explanation: Lower than 7 on the pH scale is acidic, higher than 7 is basic. A 5 on the pH scale is less than 7, so it is acidic.

Answer:

When the sun shines onto a solar panel, energy from the sunlight is absorbed by the PV cells in the panel. This energy creates electrical charges that move in response to an internal electrical field in the cell, causing electricity to flow.