Which level of protein structure is formed by the weak bonds between oxygen and hydrogen atoms within the polypeptide backbone.

Answer:

nothing

Explanation:

bocouse of darkness

Newton first law state that anything in motion or rest will remain in motion or in rest until an external force is applied

Newton third law of motion state that every action have equal and opposite reaction

Answer:

Newton's laws of motion relate an object's motion to the forces acting on it. In the first law, an object will not change its motion unless a force acts on it. ... In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

Explanation:

mark me brain list please

Answer:

The answer is C.19.8 m/s because it's their common velocity after the collision of the two cars.

Explanation:

Hello !

look at the attachment above ☝️ and if you have any questions you're welcome.

Answer:

Explanation: heat of fusion

The correct answer is option 1: "to send a moral message." King Louis XVI's goal for Jacques-Louis David's Oath of the Horatii was to promote patriotic values and discourage individualism, and the painting was intended to send a moral message about the importance of loyalty to the state and self-sacrifice.

As per the given scenario, the experiment is based on recording spheres as they fall through the liquid. For the purpose of determining the relationship between the terminal velocity and parameter (radius, density, or viscosity) graphs and/or charts that are to be used are mentioned below: Scatter Plot, Line Graph, Histogram, Bar Graph

Graphs and charts to use in the experiment:

Scatter Plot: A scatter plot is a chart that shows the relationship between two variables. In this experiment, it can be used to show the relationship between terminal velocity and radius. The radius can be the independent variable and the terminal velocity the dependent variable. With a scatter plot, you can see if there is a relationship between two variables and, if so, whether it is linear.

Line Graph:

A line graph is a chart that displays data using lines. It is most commonly used for showing trends over time. In this experiment, you can use a line graph to show the relationship between terminal velocity and density. In this case, density would be the independent variable and terminal velocity the dependent variable. You can use the line graph to show if there is a linear relationship between the two variables.

Histogram:

A histogram is a chart that shows the distribution of data. In this experiment, it can be used to show the distribution of the spheres based on their terminal velocities. This can help to identify any outliers and to determine whether the data is normally distributed. A normal distribution would be bell-shaped.

Bar Graph:

A bar graph is a chart that uses bars to show comparisons between categories. In this experiment, it can be used to show the comparison between the terminal velocities of spheres with different viscosities. In this case, viscosity would be the independent variable and terminal velocity the dependent variable. With a bar graph, you can easily compare the data for different categories and identify any patterns or trends.

graphs and/or charts that can be used to complete the analysis and prove the hypothesis are scatter plot, line graph, histogram, and bar graph. These graphs help to show the relationship between the different variables and how they relate to each other. Scatter plots can be used to show the relationship between two variables and whether it is linear. Line graphs can be used to show trends over time, while histograms show the distribution of data.

Bar graphs are useful for comparing data between different categories. With these graphs and charts, it will be easy to analyze the data and determine whether there is a relationship between terminal velocity and parameter (radius, density, or viscosity).

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Answer:

The kinetic energy of an object is directly proportional to its mass and the square of its velocity. This means that if the mass of an object is increased, its kinetic energy will also increase.

In the case of the two cars, the second car has a mass six times the mass of the first car. This means that the kinetic energy of the second car will be six times greater than the kinetic energy of the first car.

Therefore, the implications of the second car having six times the kinetic energy of the first car is that it will require more force and heat energy to bring it to a stop using the brakes. This may require the use of more advanced braking systems, such as brakes with larger calipers or brake discs, in order to effectively stop the car in a safe and timely manner.

Approximately 2 × 10^-9 kg of matter was lost in this nuclear reaction.

In this nuclear reaction, the matter lost can be calculated using the energy released (1.8 × 10^14 J) and Einstein's famous equation, E=mc^2.

To find the mass lost, we will rearrange the equation and plug in the given energy value.

Einstein's equation states that energy (E) is equal to the mass (m) of the matter times the speed of light (c) squared. The speed of light is approximately 3 × 10^8 m/s. We can rearrange the equation to solve for the mass lost:

m = E / c^2

Now, we plug in the given energy value (1.8 × 10^14 J) and the speed of light (3 × 10^8 m/s):

m = (1.8 × 10^14 J) / (3 × 10^8 m/s)^2

m ≈ 2 × 10^-9 kg

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Answer:

Temperature is a measure of the average kinetic energy of the particles in an object.

Using the modern celcius system of temperature measurement, We. an easily determine how hot or cold it is. It was also know as Centigrade. This is because it is based on the freezing and boiling points of water with 100 degrees between those temperatures.

The phase of the moon when the moon is on the opposite side of the earth from the sun is the full moon. This happens when the sun, earth, and moon are aligned, with the earth in the middle.

The full moon appears when the sun’s light reflects off the entire surface of the moon, making it appear completely illuminated from our perspective on earth.Therefore, option A is the correct answer: The full moon.

When the moon is on the opposite side of the Earth from the sun, it is in the full moon phase. During this phase, the sun illuminates the entire side of the moon facing the Earth, making it appear fully lit and round. This occurs because the sun, Earth, and moon are aligned in a straight line, with the Earth in the middle. The full moon phase is characterized by a bright, round shape and is often considered the most visually striking lunar phase. It occurs approximately once every 29.5 days as the moon orbits around the Earth.

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Answer:

balanced forces external forces

Explanation:

A body that is under a network of balanced external forces will experience no resultant force at all, since all the forces cancel themselves out. A body that is moving with this type of force will  experience no acceleration, since there is no force acting on them. This lack of acceleration means that the body maintains a constant velocity if it is already in motion, or zero when the body is at rest.

We will have that the picture that shows the highest average kinetic energy is image B.

13.The color with the longest wavelength is option A. Red.

14.The sky appears blue due to option D. Scattering of light.

Red light has a longer wavelength compared to yellow and blue light.The color that has the longest wavelength is red. The color of the sky appears blue due to scattering of light. The distance between one peak and the next in a series of waves, particularly electromagnetic waves traveling through space or along a wire is referred to as wavelength.

The wavelength of light, for example, determines its color. Red light has the longest wavelength, followed by orange, yellow, green, blue, and purple, with violet light having the shortest wavelength. When light is reflected off a surface or passes through a medium, it can be deflected in various directions, a phenomenon known as scattering of light.

The Earth's atmosphere scatters sunlight in all directions, but the shorter blue wavelengths are scattered more than the longer wavelengths. As a result, we perceive the sky as blue during the day.  The light becomes scattered when it interacts with particles in the atmosphere, causing the sky to appear blue during the day and red during sunset or sunrise. The scattering of light is the process that causes the sky to appear blue.

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Answer:

the body has energy due to its constant motion. it means it moves in a uniform acceleration which has zero velocity

Explanation:

Uniform or constant acceleration is a type of motion in which the velocity of an object changes by an equal amount in every equal time period.

The acceleration and net force must both be zero if an object is travelling continuously to the right at a constant speed.

Newton's first law states that any object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the application of an external force. The tendency to resist changes in a motion situation is known as inertia.

The only time two objects have the same velocity is when they are going in the same direction and at the same speed. Objects moving at varying rates, in varying directions, or in both directions exhibit variable velocities.

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Answer:

junk food, alcohol, soda, microwave food, candy, some sugary drinks

Answer: 400m

Distance apart = (80)(5) = 400m

Both packages would perform projectile motion when falling to the ground. Since horizontal displacement moved by both packages are the same, their difference would only be due to the additional distance travelled by the plane during the 5 second interval between dropping both packages.

The heat added from the hot reservoir (Qh) cannot be calculated without specific values for temperatures or heat quantities.

To calculate the heat added from the hot reservoir (Qh) in a heat engine, you need the temperatures of the hot (Th) and cold (Tc) reservoirs, and either the work done (W) or the heat rejected to the cold reservoir (Qc).

Using the provided information, you can apply the formula for the efficiency of a heat engine: efficiency = W/Qh = 1 - Qc/Qh.

Rearrange the equation to find Qh and plug in the known values. Once you've done this, you can calculate the heat added from the hot reservoir in joules.

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Answer:

Reliable predictions require precursors – some kind of signal in the earth that indicates a big quake is on the way. The signal has to happen only before large earthquakes and it has to occur before all big quakes. At the moment seismologists have failed to find those precursors – if they even exist.

Answer:

Heat lost thru doors & windows = (100 - 75 - 5) = 20

20% is the fraction of heat lost thru doors and windows

One wants to obtain the largest savings per unit of cost

roof:

200 / 600 = 1/3

150 / 1000 = .15

40 / 2300 = .017

The largest of these is 1/3 so the most benefit would be obtained by insulating the roof

Since heat loss thru the roof depends on heat loss thru the attic, this is the most cost effective in reducing heat loss

The more the difference in temperature between the ceiling and roof (attic) the more heat will be lost thru the roof, so insulating the roof will decrease the heat loss of the attic

Answer:

Three thousand seven hundred fifty hours

The average velocity of the plane during the total time is 16.7 km/hr.

The initial velocity of the plane, v₁ = 390 km/hr

The time taken for this travel, t₁ = 5 hours

The final velocity of the plane, v₂ = -450 km/h

The time taken for this travel, t₂ = 4 hours

The initial displacement of the plane, d₁ = v₁ x t₁

d₁ = 390 x 5

d₁ = 1950 km

The final displacement of the plane, d₂ = v₂ x t₂

d₂ = -450 x 4

d₂ = -1800 km

The average velocity of an object is the constant velocity that, over a certain amount of time, would produce the same resultant displacement as a variable velocity in the same time frame of reference.

The average velocity of the plane during the total time is given by,

Average velocity = total displacement/total time

v = (d₁ + d₂)/(t₁ + t₂)

v = (1950 + -1800)/(5 + 4)

v = 150/9

v = 16.7 km/hr

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Your question was incomplete, but most probably your question would be:

A plane travels at +390 km/h for 5 hours, and then at -450 km/h for 4 hours.  What is the plane's average velocity over the 9 hours of the flight?

Answer:

C

Explanation:

fission requires slowing down neutrons so they hit more nuclei (easy), but fusion requires speeding up nuclei so they hit each other (hard).

Answer:

C

Explanation:

:.....: :) :D

Answer:modeled as an electromagnetic wave. In this model, a changing electric field creates a changing magnetic field.

Explanation:

Answer:

Ex = \(2 k q \frac{x}{(x^2 + z^2) ^{3/2}}\) ,  E_z =0

Explanation:

To find the electric field of each charge, let's use

          E = k q / r²

where the field for a positive charge is outgoing and for a negative charge it is incoming.

Since the electric field is a vector magnitude, let's add its components at the point z

X axis

       Eₓ = E₁ₓ + E₂ₓ

       Eₓ = 2 E₁ₓ

Z axis

       E_z = E_{1z} -E_{2z}

       E_z= 0

Let's find the expression for the electric field

the distance from the charge to the test point, using the Pythagorean theorem is

      r² = (x-0) ² + (0-z) ²

      E = \(k \frac{q}{x^2 + z^2}\)

with trigonometry we can find its components

      cos θ = E₁ₓ / E

      E₁ₓ = E cos θ

we substitute

     Eₓ = 2 E cos θ

where the cosine

    cos θ = x / r

     Ex = \(2 k \frac{q}{x^2 + z^2} \ \frac{x}{\sqrt{x^2 + z^2} }\)

     Ex = \(2 k q \frac{x}{(x^2 + z^2) ^{3/2}}\)

     E_z = 0

Because of the Doppler effect, a light- or sound-emitting object moving toward you has a lower amplitude compared to a stationary object.

The Doppler effect is generally defined as the shift in wave frequency (whether it be sound or light) caused by relative motion between the wave source and the observer. Every time a source wave moves in reference to the observer, this effect can be seen.

The Doppler effect allows astronomers to determine the frequency of light waves as an object moves in relation to the observer. As it approaches you, the frequency decreases and the item exhibits a blueshift. A redshift indicates that an item is travelling away from us.

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The normal stress on an inclined plane at 25 degrees can be calculated using σ = F / A * cos²θ, while the maximum normal stress is σ_max = F / A_max.

a. To calculate the normal stress developed on an inclined plane, we use the formula: σ = F / A * cos²θ. Given that the diameter of the rod is 12 inches, the radius (r) is half of the diameter, which is 6 inches or 0.5 feet. The cross-sectional area of the rod (A) can be calculated using the formula for the area of a circle: A = π * r². Substituting the values, we get A = π * (0.5)^2 = π * 0.25 = 0.7854 square feet.

Now, we can calculate the normal stress using the given axial tensile load (F) of 60 kips and the angle (θ) of 25 degrees. Since the load is given in kips (1 kip = 1000 pounds), we convert it to pounds by multiplying by 1000: F = 60 * 1000 = 60000 pounds.

Using the formula σ = F / A * cos²θ, we substitute the values and calculate the normal stress:

σ = 60000 / 0.7854 * cos²25 ≈ 95317.91 psi (pounds per square inch).

b. The maximum normal stress in the rod occurs when the inclined plane is aligned with the maximum cross-sectional area. In this case, the maximum cross-sectional area (A_max) is the same as the cross-sectional area of a circle, which is π * r². Substituting the radius value, we get A_max = π * (0.5)^2 = π * 0.25 = 0.7854 square feet.

To calculate the maximum normal stress (σ_max), we use the formula σ_max = F / A_max. Substituting the given axial tensile load (F) of 60 kips and the maximum cross-sectional area (A_max), we calculate the maximum normal stress:

σ_max = 60000 / 0.7854 ≈ 76448.44 psi (pounds per square inch).

Therefore, the normal stress developed on an inclined plane at an angle of 25 degrees with the cross section of the rod is approximately 95317.91 psi, and the maximum normal stress developed in the rod is approximately 76448.44 psi.

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The exact value of the total entropy of the combined system cannot be determined without knowing the final temperature of the system after reaching thermal equilibrium.

When the two blocks with different temperatures are brought in contact, heat flows from the hotter block to the colder block until they reach thermal equilibrium, meaning they reach the same temperature. The total entropy of the combined system after they come in contact will increase, as heat flows from a higher temperature to a lower temperature, increasing the disorder of the system.

When two blocks with different temperatures come into contact, heat transfer occurs between them until they reach thermal equilibrium. During this process, the entropy of the combined system increases. Since the initial entropies of the blocks were 10 J/K and 35 J/K, the final entropy of the combined system will be greater than the sum of the initial entropies, i.e., greater than 45 J/K. This is in accordance with the second law of thermodynamics, which states that the total entropy of an isolated system can never decrease over time.

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Answer:

1240000 kg * m/s

Explanation:

p = momentum

p = mass * velocity in kg* m/s

62,000 kg * 20 m/s = 1240000 kg * m/s

Answer:

The gravitational force between Saturn and it's moon is 1.62 m/s ^2

Explanation:

google it

Answer:

Explanation:

C bro

Given

The electric flux is

Radius of the sphere,

To find

a. The flux through a gaussian sphere with radius of 29.0 cm.

b. The magnitude of the charge

Explanation

a. Since the gaussian sphere covers the same charge so the electric flux through both the sphere will be same.

Thus the required flux is

b.

The magnitude of the charge is

Conclusion

a. The flux is

b. The charge is