Newton's theory of gravity consists of Select all that apply. the law of gravitational force the three laws of motion the law of conservation of angular momentum the principle of equivalence the principle of energy

Answer:

Batteries are systems that store chemical energy and then release it as electrical energy when they are connected to a circuit. Batteries can be made from many materials, but they all share three main components: a metal anode, a metal cathode and an electrolyte between them. The electrolyte is an ionic solution that allows charge to flow through the system. When a load, such as a light bulb, is connected, an oxidation-reduction reaction occurs that releases electrons from the anode while the cathode gains electrons

Explanation:

Answer:

the scientific concept being illustrated in this model is dispersion

Answer:

12.6 s

Explanation:

y =  1/2 at^2

780.1 =  1/2 ( 9.81) t^2           answer can only have 3 s.d. due to the 9.81

t = 12.6 s

Answer:

D. Burning paper

Explanation:

physical change is just changing the way it looks

chemical change is changing the properties of the object or thing

melting ice is just changing the way it looks it still has the same atoms and elements.

when you burn something it will change the properties of the atoms in the object

If a cannonball were launched from the surface of Earth at an even faster speed: its motion would be significantly impacted.

As the cannonball's speed increases, it would move forward more quickly, causing the rate at which it falls towards the ground to be countered by its horizontal motion. If the cannonball reaches a critical speed known as the "orbital velocity," it will enter a stable orbit around the Earth. In this state, the cannonball's forward motion will balance the force of gravity, preventing it from falling back to the ground.

Instead, it will continuously travel around the Earth in a circular or elliptical path. If the cannonball were to be launched at an even higher speed, beyond the escape velocity, it would eventually break free from Earth's gravitational pull and continue moving away from our planet, potentially entering into an orbit around another celestial body or traveling through space indefinitely.

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Answer: Down below is the answer in complete sentences!

Explanation:

PART A:

Gravity and Acceleration are two additional forces acting upon the sled.

PART B:

Gravity will affect the sled by pulling it down, since the slope of the hill is negative.

Acceleration will affect the sled by gradually increasing it's speed, since the slope is downwards, which in addition to the initial force exerted plus gravity increases the speed, thus the sled accelerates.

The density of mercury is approximately 13.6 g/mL.

To calculate the density of mercury in grams per milliliter, we'll first need to convert the given weight from pounds to grams and the volume from quarts to milliliters.

1 pound = 453.592 grams
1 quart = 946.353 milliliters

First, convert 28.4 pounds to grams:
28.4 pounds * 453.592 g/pound ≈ 12882.5 grams

Next, convert 1 quart to milliliters:
1 quart * 946.353 mL/quart ≈ 946.353 milliliters

Now, calculate the density using the formula density = mass/volume:
Density = 12882.5 grams / 946.353 milliliters ≈ 13.6 g/mL

Therefore, the density of mercury is approximately 13.6 g/mL.

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Answer:

the answer is main sequence star

Answer:

do we have to choose 2 answers here?

Answer:

most probably it's C

Explanation:

alveoli is surrounded by capillaries and whit that option small intestines is also there

(A) The angle of this in polar coordinates is 30⁰.

(B) The North/South and East/West components of its displacement is 250 m and 433 m respectively.

60° N of W lies in the fourth quadrant;

θ = 90 - 60 = 30⁰

in polar coordinate = (r,θ) = (500 m, 30⁰)

Dy = D sinθ

Dy = 500 m x sin(30) = 250 m

Dx = D cosθ

Dx = 500 m x cos(30) = 433 m

Thus, the angle of this in polar coordinates is 30⁰.

The North/South and East/West components of its displacement is 250 m and 433 m respectively.

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The pH scale measures the acidity or alkalinity of a solution, with values ranging from 0 to 14. A pH value of 7 represents a neutral solution, while values less than 7 indicate acidity and values greater than 7 indicate alkalinity.

The pH scale is logarithmic, which means that each unit change in pH represents a ten-fold change in the concentration of hydrogen ions (H+) in the solution.
A pH of 12 represents a basic solution, while a pH of 8 is also basic, but less so. To determine how many times more basic a pH of 12 is compared to a pH of 8, we can calculate the difference in their pH values and then use the properties of logarithms to find the relative concentration difference.
The difference in pH values is 12 - 8 = 4. Since the pH scale is logarithmic, a difference of 4 units represents a 10^4 or 10,000-fold difference in the concentration of hydrogen ions. Thus, a solution with a pH of 12 is 10,000 times more basic than a solution with a pH of 8. This significant difference highlights the importance of understanding and accurately measuring pH levels in various contexts, such as environmental studies, industrial processes, and biological systems.

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Answer:

A

Explanation:

Dropping the magnet its weaknging the structure

Answer:

Burrowing animals can cause weathering. By digging for food or making space to live in the animal may break apart rock. The growing roots of a tree can also break apart rock.

Answer:

7.63×10⁷ kJ

Explanation:

From the question given above, the following data were obtained:

Heat of fusion (Hբ) = 6.01 kJ/mol

Number of mole of water (n) = 1.27×10⁷ moles

Heat (Q) absorbed =?

The thermal energy absorbed can be obtained as follow:

Q = n•Hբ

Q = 1.27×10⁷ × 6.01

Q = 7.63×10⁷ kJ

Thus, 7.63×10⁷ kJ of thermal energy is absorbed.

Answer: o do not know

Explanation:

The hydrogen transition that represents the absorption of a photon in the UV portion of the electromagnetic spectrum is Option E: n=1 to n=4.

In the hydrogen atom, the energy levels of the electrons are quantized, and transitions between these energy levels result in the emission or absorption of photons. The energy of a photon is directly related to the difference in energy between the initial and final states of the electron.

In this case, the transition from n=1 to n=4 represents the absorption of a photon in the UV portion of the electromagnetic spectrum. When an electron in the hydrogen atom absorbs a photon, it gains energy and jumps from the ground state (n=1) to the higher energy state (n=4). This transition corresponds to the absorption of UV light.

The energy of the photon absorbed is equal to the difference in energy between the n=4 and n=1 levels. The energy difference increases as the electron transitions to higher energy levels, which corresponds to shorter wavelengths in the UV portion of the electromagnetic spectrum.

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Option(D) is the correct answer.

A hard disk drive has 16 platters, 8192 cylinders, and 256 4kb sectors per track. the storage capacity of this disk drive is at most 32 GB.

An HDD is a computer's internal data storage component. It has rotating disks that store data magnetically. Data is read and written to the disk by the HDD's arm's many "heads" (transducers). The operation is comparable to that of a turntable record player, which uses an LP record (hard disk) and an arm with a needle (transducers). To access various types of data, the arm slides the heads across the disk's surface.

Since HDDs have been in use longer than SSDs, they are regarded as a legacy technology. They are often less expensive and useful for data that is not regularly accessible, such backups of pictures, movies, or business information.

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The electron's K.E. is P 2 /2m=2.4151019 J=1.51 eV. The relationship between the system's energy output and input is referred to as the "energy balance," "energy payback ratio," or "energy ratio."

The balance of energy can be written as. Eo = dE plus Ei. The energy returned by the material to the energy taken in from the environment is known as the yield ratio. Only the primary fuel can speed up growth, but their availability is constrained.

The De Broglie hypothesis states that p= h \s​

= \s1∗10 \s−9

6.62∗10 \s−34

​ \s =6.62∗10 \s−25 \s kg−m/s

No matter if it's an electron or a photon, the value is constant.

(b) λ=1 nm

E = hc / e = 1243.1 eV = 1.24 keV

Momentum, p=h/=6.631025 kgm/s, is shown in (c).

The electron's K.E. is P 2 /2m=2.4151019 J=1.51 eV.

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Answer:

The show with 20 N force will accelerate more than the show with 10 N force, because 20 N force is greater than 10 N force.

Explanation:

From Newton's second law of motion, acceleration is the ratio of applied to mass of the object.

\(acceleration = \frac{Force}{mass}\)

Acceleration is directly proportional to an applied force. At a constant mass, acceleration increases with an increase in the applied force.

Therefore, the show with 20 N force will accelerate more than the show with 10 N force, because 20 N force is greater than 10 N force.

Distance = 49

Time = 7

49/7 = 7

7 CM/S

Answer:

First, convert 850.0 m^2 to cm^2 to match the volume of oil. It would come out to 8,500,000 cm^2. Now set up V=lwh (length times width times height). You are looking for thickness, which is height.

1000.0cm^3 = (8.500*10^6 cm^2)(h)

1000.0/(8.500*10^6) = h

Explanation: I hope this help :)

Answer:

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Answer:

Option B. 2.8 s

Explanation:

The following data were obtained from the question:

Initial velocity (u) = 27 m/s

Angle of projection (θ) = 30

Acceleration due to gravity (g) = 9.8 m/s²

Time of flight (T) =?

The time of flight of the ball can be obtained as follow:

T = 2uSineθ / g

T = 2 × 27 × Sine 30 / 9.8

T = 2 × 27 × 0.5 / 9.8

T = 27 / 9.8

T = 2.8 s

Therefore, time of flight of the ball is 2.8 s

The star Betelgeuse is about 600 light-years away. If it explodes tonight, approximately: we won't know about it until 600 years from now.

Rather than measuring time, a light-year measures distance (as the name might imply). The distance a light beam travels in a single Earth year is measured in "light-years," which is roughly equivalent to 6 trillion miles (9.7 trillion kilometers).

Because the cosmos is expanding, the light that goes the farthest is stretched the most, resulting in the object that emitted that light being farther away. The expanding cosmos is the reason we can see things up to 46.1 billion light-years away. According to a common model of the Universe, some of the most recently discovered objects may be more than 13 billion light years away.

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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 equation U = qV can be used to calculate the change in potential energy, where q is the proton's charge and V is the difference in voltage or electric potential.

We utilise the equation V = Ed, where E is the electric field strength and d is the distance travelled in the field, to determine V. We get V = E(5-2) = E * 3 and U = qV = q * E * 3 when the given values are substituted.Electric Potential Difference (V or V): In an electric field, the amount of energy needed to transport a charge from one place to another is known as the electric potential difference. It is frequently represented by the symbol V and has volt-based units (V).

(E) Electric Field Strength the strength of the electric field

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Answer:

Explanation:

They traveled this distance in 2 parts, essentially. Part 1 had an average speed for a certain number of hours, part 2 had an average speed for a certain number of hours, and those 2 parts taken together took them a distance of 364 km. In equation form, that looks like this:

km/hr part 1 + km/hr part 2 = 364 km

Now we need to find each part on the left side of that equation. Part 1 first:

We traveled 65 km/hr for 2 hours, so that took us

\(65\frac{km}{hr}*2hr\) and canceling out the hour label, we have that in part 1 we got

65(2) = 130 km. Good. Now onto the second part, where our unknown is.

We traveled 78 km/hr the second part for x hours, so that took us

\(78\frac{km}{hr}*xhr\) and canceling out the hour label, we have that in part 2 we got

78x km. Now we can fill in the main equation (the one in bold print)

130 km + 78x km = 364 km and subtracting 130 km from both sides:

78x km = 234 km and dividing by 78 km:

x = 3 hours. Part 2 took 3 hours. Part 1 took 2 hours, so the whole trip took 5 hours.

To calculate the Km and Vmax values from the linear regression results of Lineweaver-Burk, Eadie-Hofstee, and Hanes-Woolf plots, you will need to determine the slope and intercept of the regression lines.

In the Lineweaver-Burk plot, the x-intercept corresponds to -1/Km, and the y-intercept corresponds to 1/Vmax. By determining the values of Km and Vmax from the intercepts, you can calculate the corresponding error bars if provided.

In the Eadie-Hofstee plot, the slope corresponds to -Km/Vmax, and the y-intercept corresponds to Vmax. By determining the values of Km and Vmax from the slope and y-intercept, you can calculate the corresponding error bars if provided.

In the Hanes-Woolf plot, the slope corresponds to Km/Vmax, and the y-intercept corresponds to 1/Vmax. By determining the values of Km and Vmax from the slope and y-intercept, you can calculate the corresponding error bars if provided.

Please provide the specific numerical values and error bars from your regression analyses in order to calculate the Km and Vmax values accurately.

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