true or False: Convection is energy transfer due to uneven heating

Charges flow through wires because of differences in electric potential, also known as voltage.

When two points in a circuit have different electric potentials, such as when a battery is connected to a wire, the higher potential at one end of the wire produces an electric field. The electric charges are forced to travel in the direction of lower potential by the force of this electric field. Electrons, which are the most common charges, pass across the wire to produce an electric current.

The force that propels the charges is the electric potential difference, or voltage. It may be described as the "pressure" or "push" that causes the charges to flow through the circuit. The larger the potential difference and voltage, the more force is applied to get the charges to flow.

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Answer:

Reaches max height at t = 2.42s.

Explanation:

I've assumed we are neglecting air resistance. If not let me know and I'll update.

We want to examine the behaviour of the ball in the y-direction. In the absence of air resistance the only force acting on the ball is gravity, which produces an acceleration in the negative y direction.

Answer:

with teamwork

Explanation:

you need to use team work so the right answer is C

Answer:

Location

Explanation:

Potential energy is the energy stored in an object due to its position. The most common type of potential energy - gravitational potential energy - is the energy stored in an object due to its vertical position relative to the ground or some zero level.

"An object can store energy as the result of its position. For example, the heavy ball of a demolition machine is storing energy when it is held at an elevated position." This stored energy of position is referred to as potential energy. Similarly, a drawn bow is able to store energy as the result of its position.

"Energy is the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other forms."

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Answer:

B. contains substance s that are not mixed in a specific ratio

Explanation:

the proportion of constituents in a mixture can vary

Answer:

It's a pretty simple suvat linear projectile motion question, using the following equation and plugging in your values it's a pretty trivial calculation.

V^2=U^2+2*a*x

V=0 (as it is at max height)

U=30ms^-1 (initial speed)

a=-g /-9.8ms^-2 (as it is moving against gravity)

x is the variable you want to calculate (height)

0=30^2+2*(-9.8)*x

x=-30^2/2*-9.8

x=45.92m

Answer:

35

Explanation:

dfddffffffffffffdddfr

Explanation:

Hydraulic systems use the pump to push hydraulic fluid through the system to create fluid power. The fluid passes through the valves and flows to the cylinder where the hydraulic energy converts back into mechanical energy. The valves help to direct the flow of the liquid and relieve pressure when needed

Eco-friendly items are made from elements that have been reclaimed, are simple to recycle, or have been sourced naturally, such as cotton or bamboo.

Use materials that will help your product last a long time. Material that are unable to be recycled should not be coupled. Choose substances that are recyclable in the nation where the product will be used. Using design strategies like honeycombing can help you utilise less material.

For information on any green certifications, check the product's label or the company website. Keep an eye out for the following certifications in particular: Energy Stars (for energy efficiency), Made With organic Seal (for natural foods), Endorsement Of forest certification Council (for goods manufactured from trees in forests that have been sustainably managed), & Green Shield (for general sustainability).

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Answer:

Independent- isn't effected by the other variables and is changeable

dependent- is the outcome of the expirment and depends on the other variables

Answer:

a factor that changes due to the independent variable

Explanation:

Answer:

b

Explanation:

b

In the context of a pulse of light, the uncertainty in wavelength for the high-energy end is also 728 nm, as determined by the uncertainty principle.

According to the uncertainty principle, there is a fundamental limit to how precisely both the position and momentum of a particle can be known simultaneously. This uncertainty is quantified by the Heisenberg uncertainty principle equation:

\(\begin{equation}\Delta x \Delta p \geq \frac{h}{4\pi}\)

Where Δx is the uncertainty in position, Δp is the uncertainty in momentum, and h is the Planck constant (approximately 6.626 x 10⁻³⁴J*s).

In the context of a pulse of light, we can relate the uncertainty in position (Δx) to the uncertainty in wavelength (Δλ) using the equation:

\(\begin{equation}\Delta x \Delta p = \frac{h}{4\pi} = \Delta \lambda \Delta p\)

Now, let's calculate the uncertainty in wavelength (Δλ) for the high-energy end of the pulse. We'll assume that the uncertainty in momentum (Δp) remains the same for both ends of the pulse.

Given that the low-energy end of the pulse has a wavelength of 728 nm (or 728 x 10⁻⁹ m), we can substitute the known values into the equation:

\(\begin{equation}(728 \times 10^{-9} \text{ m}) \times \Delta p = \frac{h}{4\pi}\)

Solving for Δp:

\(\begin{equation}\Delta p = \frac{\frac{h}{4\pi}}{728 \times 10^{-9} \text{ m}}\)

Now, we can calculate the uncertainty in wavelength (Δλ) for the high-energy end of the pulse by rearranging the equation:

\(\begin{equation}\Delta \lambda = \frac{\frac{h}{4\pi}}{\Delta p}\)

Substituting the known values:

\(\Delta\lambda = \frac{\frac{h}{4\pi}}{\frac{\frac{h}{4\pi}}{728 \times 10^{-9} \, \text{m}}}\)

Simplifying:

Δλ = 728 x 10⁻⁹ m

Therefore, the uncertainty in wavelength for the high-energy end of the pulse, limited by the uncertainty principle, is also 728 nm.

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The uncertainty principle in quantum mechanics sets a limit to how precisely we can measure the properties of a particle, including the wavelength of a photon. Therefore, the wavelength of the high-energy end of a pulse limited by the uncertainty principle would be shorter than the given wavelength of the low-energy end.

The uncertainty principle in quantum mechanics states that there is always a limit to how precisely we can measure certain pairs of properties of a particle, such as position and momentum. In the case of light, the uncertainty principle also applies, and it implies that there is a limit to how precisely we can measure the wavelength and energy of a photon. So, if the low-energy end of the pulse has a wavelength of 728 nm, the wavelength of the high-energy end that is limited by the uncertainty principle would be shorter than 728 nm.

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Answer:

3.18 Nm

Explanation:

Given that:

Radius (r) = 15cm = 15/100 = 0.15m

θ = 45°

Applied force (F) = 30 N

The Torque can be obtained using the relation :

T = rF * sinθ

T = 0.15 * 30 * sin(45)

T = 0.15 * 30 * 0.7071067

T = 3.18198015

T = 3.18 Nm

Answer:

Warm air is less dense than cold air, and warm air holds more moisture than cold air.

Explanation:

HOPE THIS HELPS AND HAVE A NICE DAY <3

The normal force of the block at part B is determined as 980.4 N.

The acceleration of the block is calculated by applying Newton's second law of motion and Hooke's law as shown below.

F = ma = kx

a = ( kx / m )

where;

a = ( 10000 x 0.1 ) / ( 2 )

a = 500 m/s²

The normal force of the block at part B is calculated as follows;

Fn = m ( a - g )

where;

Fn = 2 ( 500 - 9.8 )

Fn = 980.4 N

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Answer/Explanation:

In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration.

A concentration refers to a subject or study within a specific major. As part of the degree coursework, concentration classes count toward your major requirements as well.

When the switch closes, the obstacle between points P and Q is removed, allowing the flow of electricity to continue. This concept is known as completing the circuit.

The obstacle presented to the battery when the switch is open is bigger because the circuit is incomplete and no electricity is flowing. When the switch is closed, the obstacle is removed and the flow of electricity is able to continue. This concept is known as resistance. The closing of the switch will allow the flow of electricity sent by the battery to continue, as the circuit is completed. This concept is known as conductivity. When the switch is closed, the brightness of bulb B will increase compared to its brightness when the switch is open. This is because the flow of electricity is able to reach bulb B, completing the circuit and allowing it to light up. This concept is known as electrical energy. The brightness of bulb B when the switch is closed will depend on the amount of electrical energy being sent to it. If the flow of electricity is strong, bulb B may be brighter than bulb C. However, if the flow of electricity is weak, bulb C may be brighter than bulb B. This concept is known as power.

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To calculate the amount of charge that moves through the battery in 10 minutes, we need to use the formula:

Q = I * t

where:

Q is the charge (in coulombs),

I is the current (in amperes),

t is the time (in seconds).

First, let's calculate the current flowing through the circuit using Ohm's Law:

I = V / R

where:

V is the voltage (in volts),

R is the resistance (in ohms).

I = 3.0 V / 9.0 Ω

I = 0.333 A

Next, we need to convert the time of 10 minutes to seconds:

t = 10 min * 60 s/min

t = 600 s

Now we can calculate the charge:

Q = 0.333 A * 600 s

Q = 199.8 C

Therefore, approximately 199.8 coulombs of charge move through the battery in 10 minutes

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ok byy make me brilliant

2000 mm is equivalent to 2 m. This can be derived from the fact that 1 m = 1000 mm. Thus, 2000 mm would be equal to 2 m since it is twice the length of 1000 mm. This conversion is important in various fields such as construction, engineering, and science where precision is necessary.

It is crucial to be able to convert between different units of measurement in order to make accurate calculations and measurements.The millimeter is a unit of length that is often used to measure small distances such as the thickness of a sheet of paper or the size of a small component. It is part of the metric system, which is a system of units used across the world that is based on multiples of 10.

This system makes it easy to convert between different units since it is based on a consistent set of rules.For example, to convert 2000 mm to meters, we can simply divide by 1000 since there are 1000 millimeters in a meter. This gives us 2 meters, which is the equivalent length in meters of 2000 millimeters.

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(a) The change in kinetic energy is, 269,200 J

(b) The magnitude of the change in momentum is, 20,300 kg m/s

The change in the truck's kinetic energy can be calculated using the formula ΔK = Kf - Ki, where Kf is the final kinetic energy and Ki is the initial kinetic energy. Since kinetic energy is proportional to the square of velocity, we can calculate the initial and final kinetic energies in terms of velocity:

Ki = (1/2)mv1² = (1/2)(2150 kg)(8.61 m/s)^2 = 78,400 J

Kf = (1/2)mv2² = (1/2)(2150 kg)(18.06 m/s)^2 = 347,600 J

Therefore, the change in kinetic energy is:

ΔK = Kf - Ki = 347,600 J - 78,400 J = 269,200 J

The magnitude of the change in momentum can be calculated using the formula Δp = pf - pi, where pf is the final momentum and pi is the initial momentum. Since momentum is proportional to velocity, we can calculate the initial and final momenta in terms of velocity,

pi = mv1 = (2150 kg)(8.61 m/s) = 18,500 kg m/s

pf = mv2 = (2150 kg)(18.06 m/s) = 38,800 kg m/s

Therefore, the magnitude of the change in momentum is:

Δp = pf - pi = 38,800 kg m/s - 18,500 kg m/s = 20,300 kg m/s

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Answer:

c ok      

Explanation: right?

Answer:

16

Explanation:

The new volume of the balloon when heated to 48.0°C is 5.36 liters. To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas. The formula for the combined gas law is : (P₁V₁)/T₁ = (P₂V₂)/T₂

P₁ and T₁ are the pressure and temperature of the gas before the change, P₂ and T₂ are the pressure and temperature of the gas after the change, and V₁ and V₂ are the volumes of the gas before and after the change.

In this problem, we are given the initial volume V₁ = 2.68 liters and the initial temperature T₁ = 24.0°C. We want to find the final volume V₂ when the temperature changes to T₂ = 48.0°C. We are not given the pressure of the gas, but we can assume that it remains constant.

Substituting the given values into the combined gas law, we get:

(P₁V₁)/T₁ = (P₂V₂)/T₂

Since the pressure is constant, we can cancel it out:

V₁/T₁ = V₂/T₂

Solving for V₂, we get:

V₂ = (V₁ x T₂) / T₁

Substituting the values we have, we get:

V₂ = (2.68 x 48.0) / 24.0 = 5.36 liters

Therefore, the new volume of the balloon when heated to 48.0°C is 5.36 liters.

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Answer:

Because they absorb and emit heat more steadily than land, oceans help moderate temperatures in coastal areas, making winters warmer and summers cooler. Winds that blow in from across the oceans bring more rainfall and higher humidity.

Explanation:

The main categories of information systems include management-level system, operational-level system, and strategic-level system.

Information system simply means the integrated set of components that are vital for the collection, storage, and processing of data to make organizational decisions.

Information systems can be used at operational level in order to provide data that can support operational activities by keeping track of the transactions of the company.

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Answer:

Alveoli

The bronchioles end in tiny air sacs called alveoli, where oxygen is transferred from the inhaled air to the blood.

Hope this helps :)

Answer:

The finger moves at a changing rate along Line 2.

Explanation: Hope this helped! :p

Answer:

hide sample answer

The finger moves at a changing rate along Line 2.

Explanation:

Ben is curious about the volume of different popcorn containers. He finds a third container that is shaped like a rectangular prism. The container has a length of 8.25 inches, a width of 2.5 inches, and a height of 5 inches. Ben wonders how much delicious and crisp popcorn he can fit in this container.

Rectangular is a shape that has four sides and four right angles. Rectangulars can be either rectangles or squares, depending on the length and width of the sides. Rectangulars are often found in buildings, geometric objects, and river flow patterns.

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