Calcalculate potential energy given to a potato sack having a mass of 2 kg as I raise it to a height of 450 CM ​

Answer:

the catcher and outfielder

Explanation:

Answer: The catcher and the player at first base are the only players permitted to wear mitts rather than gloves. So, the answer would be 3.

Explanation: I had this on a quiz and got it right.

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A frictionless piston-cylinder device contains 7.5 liters of saturated liquid water at 275 kPa. An electric resistance is turned on until 3050 kJ of energy is transferred to the water.

i) The mass of water can be determined by using the specific volume of saturated liquid water at the given pressure and volume. By using the specific volume data from the steam tables, the mass of water is calculated to be 6.66 kg.

ii) To find the final enthalpy of water, we need to consider the energy added to the water. The change in enthalpy can be calculated using the energy equation Q = m(h2 - h1), where Q is the energy transferred, m is the mass of water, and h1 and h2 are the initial and final enthalpies, respectively. Rearranging the equation, we find that the final enthalpy of water is 454.55 kJ/kg.

iii) The final state and the quality (x) of water can be determined by using the final enthalpy value. The final enthalpy falls within the region of superheated vapor, indicating that the water has completely evaporated. Therefore, the final state is a superheated vapor and the quality is 1 (x = 1).

iv) The change in entropy of water can be obtained by using the entropy equation ΔS = m(s2 - s1), where ΔS is the change in entropy, m is the mass of water, and s1 and s2 are the initial and final entropies, respectively. The change in entropy is found to be 10.13 kJ/kg.

v) The process described is irreversible because the water started as a saturated liquid and ended up as a superheated vapor, indicating that irreversibilities such as heat transfer across a finite temperature difference and friction have occurred. Therefore, the process is irreversible.

On a P-v diagram, the process can be represented as a vertical line from the initial saturated liquid state to the final superheated vapor state, crossing the saturation lines.

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Answer:

No

Explanation:

A goal can be scored directly from a goal kick against the opposing team. An own goal cannot be scored from a goal kick; in the highly unlikely circumstance that the ball enters the kicker's own goal before being touched by another player, a corner kick is awarded.

To determine the minimum required diameter of each rod, we need to consider the average normal stress limit of 150 MPa. The formula to calculate the average normal stress is σ = F/A, where σ is the stress, F is the force applied, and A is the cross-sectional area of the rod.

Assuming the force applied is the maximum force that the rod will experience, we can rearrange the formula to solve for the cross-sectional area: A = F/σ. Since we're looking for the minimum required diameter, we'll use the formula for the cross-sectional area of a circle: A = πd²/4, where d is the diameter.
Combining the two formulas, we have πd²/4 = F/σ.
Simplifying further, d² = (4F)/(πσ).

To determine the minimum diameter, we'll use the maximum force applied and the given stress limit: d² = (4 * max force)/(π * 150 MPa).
We don't have the value of the maximum force, so we can't determine the exact minimum diameter. However, you can calculate it by plugging in the appropriate values into the formula above. Remember to round the result to the nearest millimeter. To determine the minimum required diameter of each rod, you need to know the maximum force applied and the stress limit. Use the formula d² = (4 * max force)/(π * 150 MPa) and round the result to the nearest millimeter.

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a 1.25 kg block is attached to a spring with spring constant 17.0 n/m . while the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 46.0 cm/s .The amplitude of the subsequent oscillations 48.13 cm/s

a 1.25 kilogram block is fastened to a spring with a 17.0 newtons per meter spring constant. Given that K is equal to 14 Newtons per meter and mass equals 10.5 kg. The block is then struck with a hammer by a student while it is at rest, giving it a speedo of 46.0 cm for a brief period of time. The required energy provided by the hammer, which is half mv squared, is transformed into potential energy as a result of the succeeding oscillations. This is because we know that energy is still available for consultation. So access the amplitude here from here. He will therefore be equal to and by. Consequently, the Newton's spring constant is 14 and the value is 10.5. The velocity multiplied by 0.49

Speed at X equals 0.35 into amplitude, or vice versa. At this point, the spirit will equal half of K X 1 squared plus half. Due to the fact that this is the overall energy, square is equivalent to half of a K square or an angry square. amplitude is 13 and half case 14 x one is 0.35. calculate that is equal to initial velocities of 49 squares and masses of 10.5. This will be divided in half and start at about 10.5 into the 49-square-minus-14. 13.42 into the entire square in 20.35. dividing by 10.5 and taking the square as a result. 231 6.9 Six centimeters per square second. 10.5 into 49 sq. 14. 2 into a 13.42 square entire. then subtract 10.5 from the result to get the square. So that is 48.13cm/s.

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This is incomplete question Complete Question is:

a 1.25 kg block is attached to a spring with spring constant 17.0 n/m . while the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 46.0 cm/s . what are The amplitude of the subsequent oscillations?

The wire is insulated with a layer of plastic or paint around the outside when wound into a coil to form an electromagnet to prevent the wire from shorting out against itself or other conductive materials.

When an electric current flows through a wire, it generates a magnetic field around the wire. By coiling the wire, the magnetic field is strengthened, creating a more powerful electromagnet.

However, if the wire is not insulated, the coils can touch each other, creating a short circuit that can damage the wire or the power source. Insulating the wire with a layer of plastic or paint prevents this from happening by creating a barrier between the wire and other conductive materials.

This allows the electric current to flow through the wire and generate the magnetic field, while also protecting the wire and ensuring that the electromagnet works properly.

​

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Answer:

c.

Explanation:

Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement. Put another way, speed is a scalar value, while velocity is a vector.

Formula

s = \frac{d}{t}

s = speed

d = distance traveled

t = time elapsed

Wendy riding her bike in a circle in the parking lot is a change in direction, but her speed is constant, so her velocity is not changing. Amber sitting on a park bench and Jessica walking her dog along Chestnut Avenue are both stationary, so there is no change in velocity.

What is Velocity?

It is defined as the change in position of an object over a unit of time, usually measured in meters per second (m/s) or kilometers per hour (km/h), in a specific direction.

In physics, velocity is distinguished from speed, which is the magnitude of an object's velocity but without regard to its direction. Velocity is a more precise term than speed because it includes both magnitude and direction. For example, a car traveling at 60 km/h east has a different velocity than a car traveling at 60 km/h west.

Velocity is a fundamental concept in many areas of physics, including mechanics, thermodynamics, and electromagnetism. It is used to describe the motion of objects ranging from subatomic particles to celestial bodies in the universe.

The only option that shows a change in velocity is Ken driving on Interstate 4 at 65 mph. This is because velocity is a vector quantity that includes both speed and direction. As Ken is driving, he is changing his direction or speed, or both, which means his velocity is changing.

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Answer:

Momentum = Mass x Velocity

=5.5x2

=11kgm/s

Answer:

La longitud de la varilla de cobre es de 1.201 metros a una temperatura de 100 °C.

Explanation:

Asumiendo que la varilla de cobre experimenta deformaciones muy pequeñas y que las deformaciones no longitudinales son despreciables con respecto a las deformaciones longitudinales, la deformación longitudinal de la varilla se estima mediante la siguiente fórmula:

\(l_{f} = l_{o}\cdot [1+\alpha \cdot (T_{f}-T_{o})]\) (1)

Donde:

\(l_{o}\) - Longitud inicial de la varilla, en metros.

\(\alpha\) - Coeficiente de dilatación, en \(^{\circ}C^{-1}\).

\(T_{o}\) - Temperatura inicial de la varilla, en grados Celsius.

\(T_{f}\) - Temperatura final de la varilla, en grados Celsius.

Si sabemos que \(l_{o} = 1.20\,m\), \(\alpha = 1.4\times 10^{-5}\,^{\circ}C^{-1}\), \(T_{o} = 18\,^{\circ}C\) y \(T_{f} = 100\,^{\circ}C\), entonces la longitud final de la varilla es:

\(l_{f} = (1.20\,m)\cdot \left[1 + \left(1.4\times 10^{-5}\,^{\circ}C^{-1}\right)\cdot (100\,^{\circ}C-18\,^{\circ}C)\right]\)

\(l_{f} = 1.201\,m\)

La longitud de la varilla de cobre es de 1.201 metros a una temperatura de 100 °C.

Answer:

Explanation:

The collision between the 93kg fullback and the 127kg defensive tackle is an example of an inelastic collision. In an inelastic collision, the total kinetic energy of the system is not conserved as some of the energy is transformed into other forms such as heat or sound. The resulting final speed of both players would be 0m/s, indicating that they have come to a stop after the collision.

The mass of the planet is 8 times the mass of Earth. Option b is the correct choice.

The escape velocity of a planet is given by, v_esc = sqrt((2GM)/r), where G is the gravitational constant, M is the mass of the planet, and r is the radius of the planet. If the radius of a planet is doubled, then the escape velocity will be, v_esc' = sqrt((2GM)/(2r)) = sqrt(GM/r)

Since we want the escape velocity to be twice that of Earth,

2v_esc = sqrt(GM/r)

Squaring both sides and solving for M,

M = (4v_esc^2*r)/G

Substituting in the values for Earth,

M_E = (4*(11 km/s)^26371 km)/(6.6710^-11 N*(m/kg)^2)

M_E = 1.047*10^24 kg

For a planet with twice the radius of Earth and twice the escape velocity, we have,

M = (4*(211 km/s)^2(26371 km))/(6.6710^-11 N*(m/kg)^2)

M = 8.376*10^24 kg

Therefore, the mass of the planet in units of Earth's mass is,

M/M_E = 8.37610^24 kg / 1.04710^24 kg = 8.0

Hence option b is correct choice.

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Answer:

14.2m/s^2

Explanation:

The centripetal acceleration of the race car is 14.22 m/s².

Centripetal acceleration is a characteristic of an object's motion along a circular path. Centripetal acceleration applies to any item travelling in a circle with an acceleration vector pointing in the direction of the circle's center.

In your daily existence, you must have encountered numerous instances of centripetal acceleration. A centripetal acceleration occurs when you drive in a circle, and a centripetal acceleration also occurs when a satellite orbits the earth. Centripetal refers to being in the center.

Given that: Speed of the race car: v = 80.0 meter/second.

Radius of the racetrack: r = 450 meter.

Hence, the centripetal acceleration of the car is = v²/r

= (80.0)²/450 m/s²

= 14.22 m/s².

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Answer:

Gravitational force affects weight, weight changes with change in gravity

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The parts of rock cycle are -melting, cooling, eroding, compacting, or deforming. These are the physical changes by which rock undergoes during formation.

There are mainly three main types of rocks: sedimentary, igneous, and metamorphic. Each of these rocks are formed by undergoing physical changes.

Sedimentary Rocks

Sedimentary rocks are formed from pieces of already existing rock or organic material.  Sedimentary rocks are further classified into three types of rocks listed as: clastic, organic (biological), and chemical.

Metamorphic Rocks

Metamorphic rocks are defined as those rocks that have been changed from their original form by immense heat or pressure.

When a rock with flat or elongated minerals is put under the immense pressure, the minerals line up in layers, creating the foliation.

Igneous Rocks

Igneous rocks  are formed when the molten hot material cools and solidifies. There are different ways by which igneous rocks can be formed. When they formed inside of the earth, they are called intrusive, or plutonic, igneous rocks.

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Answer:

The distance between the diver and the shipwreck is approximately 130.76 m

Explanation:

The depth of the shipwreck below the surface of the water = 35 m

The location of the wreck = 55° South of West

The angle of depression of the wreck = 18°

The location of the diver = 27° South of East

The angle of depression of the diver = 30°

The distance of the wreck from the ship = 35 m/(sin(18°)) ≈ 113.26 m

The horizontal distance of the wreck from the ship = 35 m/(sin(18°)) × (cos(18°)) ≈ 107.72 m

The x-coordinate of the shipwreck, x₁ = 107.72 m × cos(55°) ≈ 61.79

The y-coordinate of the shipwreck, y₁ = 107.72 m × sin(55°) ≈ -88.24

The z-coordinate of the shipwreck, z₁ = -35

The distance of the diver from the ship = 35 m/(sin(30°)) = 70 m

The horizontal distance of the diver from the ship = 70 m × cos(30°) ≈ 60.62 n

The x-coordinate of the diver from the ship, x₂ = -60.62 m × cos(27°) ≈ -54.013

The y-coordinate of the diver from the ship, y₂ = 60.62 × sin(27°) ≈ -27.52

The z-coordinate of the diver from the ship, z₂ = -35

The distance between the diver and the shipwreck, 'd', is given by the distance between two points given the x, y, z coordinates as follows;

d = √((x₂ - x₁)² + (y₂ - y₁)² + (z₂ - z₁)²)

Therefore, we have;

d = √((61.79 - (-54.013))² + (-88.24 - (-27.52))² + (35 - 35)²) ≈ 130.76

The distance between the diver and the shipwreck, d ≈ 130.76 m.

A sample is given as 240 grams of Technetium-104 that undergoes radioactive decay. So, the half-life of this isotope will be equal to 52 minutes. Hence, option B is correct.

To determine the half-life of a material whose quantity is reducing or decaying, one uses the half-life formula. The rate at which a chemical degrades varies depending on how much of the substance is present.

As per the given information in the question,

N₀ = 240 grams

N(t) = 60 grams

t = 104 minutes

Use the formula of the half-life:

N(t) = N₀\((1/2)^t^/^t^(^1^/^2^)\)

Substitute the values in the above formula,

60 = 240\((0.5)^{\frac{104}{t} }\)

1/4 = \((1/2)^{104/t}\)

2 = 104/t

t = 52 seconds.

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Answer:

the mass of the volume unit of red copper equals 8.8gm.

Answer: 4 billion years ago

Explanation:

The satement is true.

This comes from the fact that, according to Einstein:

and since c² is a very large number then, if we find a way to convert all the mass in energy a small amount will produce a large amount of energy.

Answer:

a. 5.22 meters

b. 2.9 seconds

c. No, Melvin does not hit the deer

Explanation:

The parameters with which Melvin is travelling are as follows;

The speed of Melvin's motion, u = 29 m/s

The distance from Melvin at which the deer jumps into the path = 50 m

a. Distance, d = Velocity, u × Time, t

The time it takes Melvin to react = 0.18 seconds

The distance, "d₁" Melvin travels before his foot hits the break = The velocity with which Melvin was traveling, "u" × The time duration it takes Melvin to hit the brakes, "t₁"

∴ d₁ = 29 m/s × 0.18 s = 5.22 m

The distance, Melvin travels before his foot hits the break = d₁ = 5.22 m

b. Melvin's acceleration after his foot hits the brakes, a = -10 m/s²

Therefore, we have;

The time it takes "t₂" it takes for him to come to a complete stop given as follows;

y = u + a × t₂

Where;

v = The final velocity after Melvin comes to a complete stop = 0 m/s

By substituting the known values, we have;

0 = 29 m/s + (-10 m/s²) × t₂ = 29 m/s - 10 m/s² × t₂

∴ 29 m/s = 10 m/s² × t₂

t₂ = (29 m/s)/(10 m/s²) = 2.9 s

The time it takes it takes for him to come to a complete stop = t₂ = 2.9 s

c. The distance, "d₂", Melvin reaches while accelerating (decelerating) at -10 m/s² to come to a complete stop is given as follows;

v² = u² + 2·a·d₂

Therefore, we have;

0² = (29 m/s)² + 2 × (-10 m/s) × d₂ = (29 m/s)² - 2 × 10 m/s × d₂

∴  (29 m/s)² = 2 × 10 m/s × d₂

d₂ = ((29 m/s)²)/(2 × 10 m/s²) = (841 m²/s²)/(20 m/s²) = 42.05 m

The distance, Melvin reaches while accelerating (decelerating) at -10 m/s² to come to a complete stop = d₂ = 42.05 m

Given that d₂ = 42.05 m < 50 m (The distance separating Melvin's initial location and the deer, Melvin does not hit the deer.

A bullet is fired upward with an initial velocity of 100 m/s. What will be it’s velocity when it hit the ground?

Zero. It is sitting on the ground.   This would almost always “assume” a friction-less environment where the only force acting on the bullet is gravity.  In this case, it would be 100 m/s immediately before hitting the ground. (zero once it comes to rest)

Answer:

International Environmental Problems require international Cooperation to resolve them Factors Responsible for the Emergence of the Environment as a Global Issue 1. The Multiplication and Deepening of Environmental Problems.

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Answer:

21.76J

Explanation:

F=ma

where:

m=mass

a=acceleration

Kamaria's mother should pull her with a force of  21.76 Newton if she (Kamaria) wants her acceleration to be 0.80 m/s².

In order to accelerate a body of mass 'm kg' with an acceleration of 'a m/s²', a force of magnitude equal to the product of mass and required acceleration is required. Mathematically -

F = m x a

Given is a girl learning how to ice skate. She wants to move with an acceleration of 0.80 m/s² and her mass is 27.2 kg.

From the definition of force, we can write -

F = m x a

F = 27.2 x 0.8

F = 21.76 Newton

Therefore, Kamaria's mother should pull her with a force of  21.76 Newton if she (Kamaria) wants her acceleration to be 0.80 m/s²

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Explanation:

If two persons are applying forces on two opposite sides of a moving cart and the cart still moves with the same speed in the same direction we can infer that the magnitudes of the forces applied by the two persons are equal and the direction of the forces is opposite to each other.

This is because of Newton's First Law of Motion which states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. In this case the cart is already in motion and is moving in a straight line. The forces applied by the two persons are external forces acting on the cart. Since the cart is moving with the same speed and in the same direction we can infer that the forces applied by the two persons are equal in magnitude and opposite in direction.

This is also known as the principle of action and reaction which is the third law of motion. According to this law for every action there is an equal and opposite reaction. In this case the action is the force applied by the two persons on the cart and the reaction is the force exerted by the cart on the two persons in the opposite direction.

The value of m for the diffraction maximum is approximately 18.

The diffraction grating has a ruling density of 3 750 rulings/cm, which means that the distance between adjacent rulings is:

d = 1 / (3750 rulings/cm) = 2.67 × \(10^{-4}\)cm

The distance between adjacent maxima for the two sodium wavelengths is given as:

Δy = 1.87 mm = 1.87 × \(10^{-1}\)cm

d sin θ = mλ

For the two closely spaced wavelengths of sodium, we have:

d sin θ = mλ1    (1)

d sin θ = mλ2    (2)

where λ1 = 589.0 nm = 5.89 × \(10^{-5}\)cm and λ2 = 589.6 nm = 5.896 × \(10^{-5}\)cm.

Subtracting equation (2) from equation (1), we get:

d sin θ = m(λ1 - λ2)

Rearranging this equation, we have:

m = (d sin θ) / (λ1 - λ2)

sin θ ≈ tan θ ≈ y / L

where y is the separation between the maxima on the screen, and L is the distance between the grating and the screen.

Substituting the given values, we have:

sin θ ≈ (1.87 × \(10^{-1}\)cm) / (3.00 m) = 6.23 × \(10^{-6}\)

Now we can calculate the value of m:

m = (d sin θ) / (λ1 - λ2)

m = [(2.67 × \(10^{-4}\)cm) × (6.23 × \(10^{-6}\))] / [(5.89 × \(10^{-5}\) cm) - (5.896 × \(10^{-5}\)cm)]

m ≈ 18

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Answer:

3: I can´t see the text/image, but it depend on the mass and the force applied to the ball, if both are too high, it will be harder to make a home run. (Second law)

4:It would be easier to make a home run because there is no interruption between the ball and the space the same travels. (Third law)

Explanation:

Given the total energy in the wire, current and time elapsed, the potential difference is 50 Volts.

The electric power is expressed as P = VI.

Where V is the potential difference, I is the electric current and P is the electric power.

Also, the consumption of energy per unit of time is called power. It is expressed as P = E / t

Given that;

First, we determine the power.

P = E / t

P = 500J / 5s

Power = 100W

Next, we determine the potential difference.

P = V × I

V = P / I

V = 100W / 2.00A

V = 50V

Given the total energy in the wire, current and time elapsed, the potential difference is 50 Volts.

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The Potential difference is 50 Volts.

The potential difference is a measure of the energy given to the charge carriers in a circuit

We know that  the electric power is expressed as P = VI.

V is the potential difference

I is the electric current
P is the electric power.

Also we know that power is expressed as P = E / t

Given

Current( I) = 2.00A ,time t = 5s

Total energy E = 500J

To find the power

P = E / t  = 500J / 5s = 100W

Now , To find the potential difference.

P = V × I (By rearranging it)

V = P / I

V = 100W / 2.00A = 50 V

Therefore , the total energy in the wire, current and time elapsed, the potential difference is 50 V.

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Answer:

Energy cannot be created or destroyed.

Explanation:

its in the name, law of "conservation" of energy. energy can only change forms not be destroyed

Answer: Energy cannot be created or destroyed.

Explanation: The law of conservation of energy states that energy can neither be created nor be destroyed due to energy loss. It can only change its states from one energy state to another.

The efficiency is defined as the ratio of output work to the input work. The efficiency of the fan is not 100%. Because some of the energy is lost in the form of heat and sound. No machine is 100% efficient. There is always some loss of energy takes place.

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