A spring attached to a mass is at rest in the initial position (not shown). The spring is compressed in position A and is then released, as shown in position B. Which equation describes conservation of energy in position A?

Inertia is a force which brings all objects to a rest position. Fast-moving objects have more inertia than slow-moving objects. False - The speed of an object has no impact upon the amount of inertia that it has. Mostly True - Two objects of the same mass can weigh differently if they are located in different locations.

I don't know if this will help

The positive charges in the two nuclei start to repel one another as the atoms get closer to one another, which raises the potential energy.

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Answer:

B) a leaf blown from a tree by the wind

Answer:

the answer is B A leaf being blown from a tree by the ground

The internal energy of the gas can be obtained as  1373 J.

The total kinetic and potential energies of the individual molecules that make up a gas are referred to as the gas' internal energy.

In other words, it is the energy resulting from the gas particle's interactions and random motion.

We kn ow that the internal energy can be given by the formula;

U = q + w

U = internal energy

q = heat

w = work done

Thus;

w = pdV

w = 3 (4 -1)

w = 9atmL

Since

1 L atm = 101.325 J

9atm L = 912 J

Then;

U = 461 + 912

= 1373 J

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Distance is the physical length travelled. While the displacement is the shorter distance between any two given points.

Distance is a numerical representation of the distance between two objects or locations.

Distance can refer to a physical length or an estimate based on other factors in physics or common use. |AB| is a symbol for the distance between two points A and B.

Displacement is defined as the shortest distance between the two points.

Sam determines the distance by doing the calculation as;

distance = speed × time

Hence, the Sam determines the distance and displacement by the respective formulas.

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Answer:

Length: meter

Volume: cubic meter

Mass: kilogram

Temperature: kelvin

Explanation:

Answer:

length = meter/m

mass = kilogram/kg

volume = cubic meter/m^3

temperature = kelvin/o K

Explanation:

SI unit and abbreviations

Answer:

One atom will give electrons to another atom to fill its shell, this is an ionic bond. The atom giving away electrons becomes positive and the one recieving electrons becomes negative.

Explanation:

Answer: One atom will give electrons to another atom to fill its shell, this is an ionic bond. The atom giving away electrons becomes positive, and the one receiving electron becomes negative.

Explanation:

I did the Gizmo.

pls what is the specific heat capacity of water

Answer:

1) correct answer is ii  larger size

2) false, 3) false, 4) true, 5) true, 6) true

Explanation:

In this exercise, the answer is asked if the statement is true.

1) in the rapid cooling speed, there is no thermodynamic equilibrium, so the secondary phases do not have time to transform into the main one, therefore many phases appear in the products,

the correct answer is ii

2) False. The transformation of a material to the glass state requires a fixed temperature and rapid changes to reach this temperature,

3) False. The most stable state is the crystalline state, the glass states are metastable, their Gibbs energy is not the lowest possible and they must transition to the crystalline state over time, it can be years or centuries.

4) True. The melting and freezing temperatures change for each material, within the same material it always has the same value, since it corresponds to a change in the state of the system.

5) true. Cast iron is called gray because of the impurities inside that have not had time to move due to rapid cooling.

6) True. The microstructure is reduced in the process of cooling and heating

The capacitance of a capacitor is: directly proportional to the area of the conductive plates and inversely proportional to the distance between them.

The capacitance (C) of a capacitor is the measure of its ability to store an electrical charge. It is dependent on the surface area (A) of the conductive plates, the distance (d) between these plates, and the permittivity (ε) of the dielectric material that separates the plates. The relationship between these factors can be described by the following formula:

C = ε × (A / d)

In this equation, the area (A) and the distance (d) play crucial roles in determining the capacitance of a capacitor. As the surface area of the plates increases, the capacitance also increases because a larger surface area allows for more charge to be stored. Conversely, as the distance between the plates decreases, the capacitance increases as well since the electric field between the plates becomes stronger, allowing for a higher charge storage capacity.

In summary, the capacitance of a capacitor is directly proportional to the area of the conductive plates and inversely proportional to the distance between them. By adjusting these factors, one can tailor the capacitance of a capacitor to meet specific requirements in various electronic devices and circuits.

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Answer:

Zero

Explanation:

Zero....  Inertia states a body in motion will remain in motion unless acted on by external forces.... no friction forces means it needs no force to keep going

Answer:

480 meters

Explanation:

The two  corresponding resonance distances  would be:

Resonance distances refer to the lengths of the air column in a resonance tube that result in resonance. Resonance occurs when the pressure variations at the two ends of the air column are in phase, which means that the distance between the two pressure nodes must be equal to an integer multiple of one-quarter wavelength (i.e., one-quarter of the wavelength of the sound wave). The length of the air column that results in resonance is referred to as a resonance distance. When the air column is at a resonance distance, it acts as a standing wave, with both pressure and velocity antinodes at the open end of the tube and pressure nodes and velocity antinodes at the closed end. The resonance distances can be used to calculate the speed of sound in the gas filling the tube.

For the first resonance, where the length of the air column is 18.8 cm, the distance between the pressure nodes must be equal to one-quarter of the wavelength of the sound wave at a frequency of 440 Hz:

(1/4)λ = 18.8 cm

Knowing the frequency and wavelength, the speed of sound in air can be calculated:

v = fλ

Substituting the values for frequency and wavelength:

v = (440 Hz)(18.8 cm) = 8332 cm/s

For the second resonance, where the length of the air column is 57.3 cm, the distance between the pressure nodes must be equal to three-quarters of the wavelength of the sound wave:

(3/4)λ = 57.3 cm

Solving for wavelength:

λ = (57.3 cm)(4) / 3 = 76 cm

The next resonance distance can be found by adding one-quarter of the wavelength to the previous resonance distance. In this case, the next resonance distance would be:

18.8 cm + (1/4)λ = 18.8 cm + (1/4)(76 cm) = 18.8 cm + 19 cm = 37.8 cm

If the tube were filled with a gas in which the speed of sound is 264 m/s, the wavelength of the 440 Hz sound wave would be:

λ = v / f = (264 m/s) / (440 Hz) = 0.6 m

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Answer:

M=51kg

Explanation:

Weight= Mass x Gravitational Acceleration

500N= M x 9.8 m/s^2

M= 51 kg

Answer:

decigram milligram gram decagram kilogram

Answer: Force = 870 N  

Explanation:

acceleration = a = (final velocity - initial velocity) / time elapsed

a = (0-30)/.005 = -6000 m/s2 (negative sign means the ball is slowing down)

Force = F = mass x acceleration = ma

F = (0.145 kg)(6000 m/s2) = 870 N away from the player throwing the ball

The magnitude of the force on the player catching the ball is equal, 870N.  The mitt acts on the ball with an equal and opposite force (Newton's 3rd Law of Motion)

The two numbers that Mumtaz used are:

15 and 75

27 and 81

39 and 99

21 and 10

Let's assume the two-digit numbers chosen by Mumtaz are represented by "AB" and "CD," where A, B, C, and D are digits.

According to the given information, Mumtaz divided one number by the other and obtained a result of 2.12121212121.

We can express this division as:

(AB) / (CD) = 2.12121212121

To solve this problem, we'll examine the possible values of A, B, C, and D.

First, let's focus on the integer part of the division (before the decimal point). Since the division result is 2, it implies that AB divided by CD must be equal to 2.

So, we have:

(AB) / (CD) = 2

This equation suggests that AB should be twice the value of CD. Let's consider the possible cases:

Case 1: AB = 2 * CD

To find the possible values, we can iterate through all two-digit numbers and check if AB is equal to twice CD.

The possible values for A and C are:

A = 1, C = 5

A = 2, C = 7

A = 3, C = 9

For each value of A and C, we need to find the corresponding values of B and D.

For A = 1 and C = 5, AB = 15, and CD = 75 (since 15 / 75 = 0.2).

For A = 2 and C = 7, AB = 27, and CD = 81 (since 27 / 81 = 0.333...).

For A = 3 and C = 9, AB = 39, and CD = 99 (since 39 / 99 = 0.3939...).

Case 2: AB = 20 * CD

In this case, the value of AB would be twenty times the value of CD.

The only possible values for A and C are:

A = 2, C = 1

For A = 2 and C = 1, AB = 21, and CD = 10 (since 21 / 10 = 2.1).

Therefore, the two numbers that Mumtaz used are:

15 and 75

27 and 81

39 and 99

21 and 10

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Velocity of the satellite that is orbiting earth is 83.45m/s, which makes the velocity of the rivet relative before striking also 83.45m/s and the time duration of collision is 4.53× 10⁻⁵ s. The avg force that is exerted by the rivet on the satellite is 9.27N and the energy that is generated by the collision is 1.63J.

a) Velocity of the satellite in an orbit 900 km above Earth's surface can be calculated as follows: Formula: `v = sqrt(GM/r)` Where,v = velocity, M = Mass of Earth, r = radius of the orbit (r = R + h)R = radius of the Earth = 6.37 × 10⁶ mh = height above Earth's surface = 900 km = 9 × 10⁵ mG = 6.67 × 10⁻¹¹ N m²/kg²By substituting the given values, we getv = sqrt((6.67 × 10⁻¹¹ × 5.97 × 10²⁴)/(6.37 × 10⁶ + 9 × 10⁵))= sqrt(6.965 × 10³) = 83.45 m/s.

Therefore, the velocity of the satellite in an orbit 900 km above Earth's surface is 83.45 m/s.

b) Velocity of the rivet relative to the satellite just before striking it can be calculated as follows: Velocity of the rivet, `v_rivet = v_satellite * sin(θ)`Where, v_satellite = 83.45 m/sθ = 90°By substituting the given values, we getv_rivet = 83.45 * sin 90°= 83.45 m/s.

Therefore, the velocity of the rivet relative to the satellite just before striking it is 83.45 m/s.

c) The time duration of collision, `Δt` can be calculated as follows:Δt = (2 * r_rivet)/v_rivet, Where,r_rivet = radius of the rivet = 3/2 × 10⁻³ m. By substituting the given values, we getΔt = (2 * 3/2 × 10⁻³)/83.45= 4.53 × 10⁻⁵ s.

Therefore, the time duration of collision is 4.53 × 10⁻⁵ s.

d) The average force exerted by the rivet on the satellite, `F` can be calculated as follows: F = m_rivet * Δv/ΔtWhere,m_rivet = mass of the rivet = 0.5 g = 0.5 × 10⁻³ kgΔv = change in velocity of the rivet = 83.45 m/sΔt = time duration of collision = 4.53 × 10⁻⁵ sBy substituting the given values, we get F = (0.5 × 10⁻³ * 83.45)/4.53 × 10⁻⁵= 9.27 N.

Therefore, the average force exerted by the rivet on the satellite is 9.27 N.

e) The energy generated by the collision, `E` can be calculated as follows: E = (1/2) * m_rivet * Δv²Where,m_rivet = mass of the rivet = 0.5 g = 0.5 × 10⁻³ kgΔv = change in velocity of the rivet = 83.45 m/s. By substituting the given values, we getE = (1/2) * 0.5 × 10⁻³ * 83.45²= 1.63 J.

Therefore, the energy generated by the collision is 1.63 J.

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Answer:

90

Explanation:

v=ir

voltage,I current,while r is the resistance

v=180×0.5

90

To determine the acceleration of Runner A and Runner B during the final 10 seconds of the race, we can use the following formula:

Acceleration (a) = (Final Velocity - Initial Velocity) / Time

Given:

- Initial velocity for both runners: +14 km/h

- Final velocity for Runner A: +20 km/h

- Final velocity for Runner B: +18 km/h

- Time: 10 seconds

Let's calculate the accelerations for Runner A and Runner B:

For Runner A:

Acceleration (Runner A) = (+20 km/h - +14 km/h) / 10 seconds

Converting the velocities to m/s and the time to seconds:

Acceleration (Runner A) = ((20 km/h - 14 km/h) * (1000 m/km) / (3600 s/h)) / 10 seconds

Simplifying the calculation:

Acceleration (Runner A) = (6 km/h * (1000 m/km) / (3600 s/h)) / 10 seconds

Acceleration (Runner A) = (6000 m / 36000 s) / 10 seconds

Acceleration (Runner A) = 0.1667 m/s²

For Runner B:

Acceleration (Runner B) = (+18 km/h - +14 km/h) / 10 seconds

Converting the velocities to m/s and the time to seconds:

Acceleration (Runner B) = ((18 km/h - 14 km/h) * (1000 m/km) / (3600 s/h)) / 10 second

Simplifying the calculation:

Acceleration (Runner B) = (4 km/h * (1000 m/km) / (3600 s/h)) / 10 seconds

Acceleration (Runner B) = (4000 m / 36000 s) / 10 seconds

Acceleration (Runner B) = 0.1111 m/s²

Therefore, the accelerations of Runner A and Runner B during the final 10 seconds of the race are:

- Runner A: 0.1667 m/s²

- Runner B: 0.1111 m/s²

None of the provided options match these values.

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Weight of a body is the force with which the earth pulls on it. So W = mg = 45 * 9.8 newtons.

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The distance after 4.5 seconds is

The distance a falling object travels can be calculated using the equation:

distance = initial velocity x time + (1/2) x acceleration x time^2

Since the object was dropped, its initial velocity is zero, and the acceleration due to gravity is approximately 9.8 m/s^2.

Plugging in the values:

distance = 0 x 4.5 + (1/2) x 9.8 x 4.5^2

distance = 0 + (1/2) x 9.8 x 20.25

distance = 101.275 m

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Answer:

5.61 seconds

Explanation:

The baseball moves as a projectile. Its angle is 45° and its velocity is 95 miles per hour.

Let us convert this to metres per second:

1 mile per hour = 0.45 m/s

95 miles per hour = 95 * 0.45 = 42.75 m/s

We need to find the time of flight of the baseball. Time of flight is given as:

\(T = \frac{2u sin\alpha }{g}\)

where u = initial velocity

α = angle

g = acceleration due to gravity (9.8 m/s)

Therefore:

\(T = \frac{2 * 42.75 * sin40}{9.8}\\ \\T = 5.61 secs\)

The baseball was in the air for 5.61 seconds.

The equation to calculate torque applied to a propeller is \(\Delta\omega = (\tau\Delta t) / I\). Using this equation, the torque applied to a propeller is found to be 5.3 N-m when the change in angular velocity is 16 rad/s, the time interval is 12 s, and the rotational inertia is 4 kg-m².

The torque applied to the propeller can be determined using the equation:

\(\Delta\omega = (\tau\Delta t) / I\)

where \(\Delta\omega\) is the change in angular velocity, τ is the torque applied, Δt is the time interval, and I is the rotational inertia.

The change in angular velocity is 8 - (-8) = 16 rad/s. Substituting the given values, we get:

\(16 rad/s = (\tau \times 12 s) / 4 kg-m^2\)

Solving for τ, we get:

\(\tau = (16 rad/s \times 4 kg-m^2) / 12 s\)

\(\tau\) = 5.3 N-m

Therefore, the torque applied to the propeller is 5.3 N-m.

In summary, the torque applied to the boat's propeller can be determined using the formula \(\Delta\omega = (\tau\Delta t) / I\), where \(\Delta\omega\) is the change in angular velocity, \(\tau\) is the torque applied, \(\Delta t\) is the time interval, and I is the rotational inertia.

Substituting the given values and solving for \(\tau\), we get the torque applied to be 5.3 N-m. Therefore, option B is the correct answer.

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Complete Question:

A boat's propeller has a rotational inertia of 4 kg-m2. After a constant torque is applied for 12s, the propeller's angular speed changes from a clockwise 8 rad/s to counter-clock wise 8 rad/s. What was the torque applied to the propeller?

A. 4.3 N-m

B. 5.3 N-m

C. 6.3 N-m

D. 7.3 N-m

The peak emission wavelength for a campfire with this temperature is 2.32 µm.

Wein's Law is given by the formula: Amax = a/T

We have to find the peak emission wavelength of the campfire using Wein's displacement law which is given by the formula Amax = a/T.

Where Amax is the peak emission wavelength in um, a is a constant that equals 2897 um-K, and T is the blackbody temperature.

Substituting the given values in the formula, we get:

Amax = 2897 / 1250 um-K = 2.32 um

Therefore, 2.32 µm is the peak emission wavelength for a campfire with this temperature

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The particles in an atom that are considered "light" are the electrons.

The three types of particles found in atoms are protons, neutrons, and electrons. Protons and neutrons are found in the nucleus of the atom, while electrons orbit around the nucleus in electron shells. Electrons are considered "light" particles because they have a much smaller mass than protons and neutrons.

Specifically, electrons have a mass of approximately 9.1 x 10^-31 kilograms, which is about 1/1836th the mass of a proton or neutron. This small mass makes electrons highly mobile and allows them to be involved in chemical reactions and electrical conductivity.

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Answer: B

Explanation:

It will move slower than the light the object. The equation is Newton's 2nd Law of F = ma. If the force is constant, and the mass changes to something larger, then the acceleration must become smaller. You could also just do this yourself, push two objects with your hands. The heavier one will move slower assuming you used the same amount of force