What velocity must a car with a mass of 1370kg have in order to have the same momentum as a 2280kg pickup truck traveling at 21m/s to the east

The current flowing through the speaker  is 0.045 ampere.

The rate of electron passage in a conductor is known as electric current. The ampere is the electric current's SI unit. Electrons are little particles that are part of a substance's molecular structure.

The potential difference of the speaker = 9 V.

The resistance of the speaker = 200 Ω.

According to Ohm's law,

potential difference  = resistance × current flowing

Hence, the current flowing through the speaker =   potential difference ÷ resistance

= 9 V/200 Ω

= 0.045 Ampere.

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The gravitational field on the surface of the planet is approximately 9.81 m/s^2

Gravitational field can be defined as the force field that exists in the space around every mass or group of masses.

The gravitational field on the surface of a planet can be calculated using Newton's law of gravitation:

G * m_planet / r^2

Where:

G = 6.67 x 10^-11 Nm^2/kg^2 is the gravitational constant

m_planet = 8.5 x 10^26 kg is the mass of the planet

r = 3.5 x 10^4 km is the radius of the planet (converted to meters)

First, let's convert the radius to meters:

3.5 x 10^4 km = 3.5 x 10^4 x 10^3 m = 3.5 x 10^7 m

Next, let's plug in the values and simplify the expression:

g = G * m_planet / r^2

g = (6.67 x 10^-11 Nm^2/kg^2) * (8.5 x 10^26 kg) / (3.5 x 10^7 m)^2

g = (6.67 x 10^-11 Nm^2/kg^2) * (8.5 x 10^26 kg) / (1.225 x 10^15 m^2)

g = 9.81 m/s^2

Therefore, The gravitational field on the surface of the planet is approximately 9.81 m/s^2

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The magnitude of |A-B| is given by √{A²+B²-2ABcosθ}.

In physics, a vector is a quantity with both magnitude and direction. It is often represented by an arrow whose length is proportional to the magnitude of the quantity and whose direction is the same as that of the quantity.

A vector does not have position, while having magnitude and direction. In other words, a vector's shape is unaltered if it is shifted parallel to itself as long as its length is unaltered.

Let consider two vector [tex]\vec{A}[/tex] and [tex]\vec{B}[/tex] and angle between them is θ, then the magnitude of |A-B| is given by = √{A²+B²-2ABcosθ}

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Answer:

It is Gamma decay of radiation.

A car has an acceleration of 4m/s squared. If it started with a velocity of 30m/s, 38m/s is its final velocity.

Acceleration: the rate at which the speed and direction of a moving object vary over time. A point or object going straight forward is accelerated when it accelerates or decelerates.

Even though the speed is constant, motion on a circle accelerates so because direction is always shifting. Both tangential to the acceleration for all other motions.

v = u + at

V= final velocity=?

U= initial velocity=  30m/s

a= acceleration = 4m/s²

substituting all the given values in the above equation, we get

v = 30+ 4× 2

V= 38m/s

Therefore,  38m/s  is its final velocity.

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Observation is an integral part in scientific investigation. In weather forecasts, keen observation is very essential in weather forecast to scientifically report the climate changes.

Weather forecasters provide up to date information regarding the changes in weather in different regions and the factors affecting it. The primary atmospheric measurements that aid weather forecasters in making their predictions are observation on temperature, humidity, precipitation, air pressure, wind speed, and wind direction.

Since the first weather observations were kept on record, these same criteria have been utilized. However, there have been substantial changes in the types and quality of weather devices as well as the approaches to evaluating observations.

Thermometers, rain gauges, barometers, and anemometers are common tools for observing the weather. Wind profilers, weather balloons  Doppler radar, and satellites are a few examples of more advanced equipment.

Human observations continue to give crucial information on sky conditions, clouds, and the kind, size, and amount of precipitation even with the highly sophisticated instruments currently accessible.

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Speed (m/s) = 1.56 × wave period (seconds). Longer waves travel faster.

C = g tanh kd gives the wave celerity, or the speed of the wave travelling over the water surface.

The rate at which the wave crest or trough moves. Another definition for linear waves that is useful if there are many wave spectral components involved is the frequency multiplied by the wavelength or the angular frequency divided by the wave number.

Celerity is the rate at which pressure waves travel in a closed circuit (measured in metres per second). This should not be confused with water velocity.

The rate at which the wave crest or trough moves. Another definition, useful for linear waves with many wave spectral components, is frequency multiplied by wavelength.

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The potential energy at that point is  648 J.

We have to note that by the use of the law of the conservation of the mechanical energy that energy can not be created or destroyed but that the energy can be converted from one form to the other.

We now know that the total energy of the system is; 900 J + 300 J = 1200 J

It then follows from the law of the conservation of the mechanical energy that this total energy must be constant.

Potential energy at that point = 1200 J - 552 J

= 648 J

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At 900 degrees Celsius, we would expect the uranium to be in a solid state.

The theory used in this question is the phase transition theory.

This theory states that when a substance is heated or cooled, it can change from one state of matter to another, such as from a solid to a liquid or from a liquid to a gas.

It explains the behavior of matter at different temperatures.

Uranium is a metallic element that can exist in a solid, liquid, or gaseous state depending on its temperature.

When the temperature of uranium is above its melting point of 1132°C, it will be in a liquid state.

When the temperature of uranium drops from 1500°C to 900°C, it will pass through the liquid state and become a solid.

At 900°C, the uranium will be in a solid state.

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The persistence method is the simplest forecasting method. But it has its own limitations.

When weather patterns change slowly and features on weather maps move slowly, the persistence approach works effectively. It also works effectively in regions where the weather varies little from day to day throughout the summer. However, if the weather changes drastically from day to day, the persistence approach frequently fails and is not the ideal forecasting strategy to utilize.

It may appear that the persistence forecast is only useful for shorter-term forecasts like for day or two. However one of the most significant tasks of the persistence forecast is anticipating long-term weather conditions or producing climate forecasts. Making long-term projections for monthly and seasonal weather conditions requires considerable ability. For predictions longer than ten days, certain alternative forecasting approaches, such as numerical weather prediction, lose all of their accuracy. Persistence is therefore a "hard to beat" strategy for forecasting over extended time periods.

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Based on the speed formula and the data provided on displacement and time, the speed of the walking dude is 200 m/s.

The formula for determining the speed of a body is given below:

Speed = x₁ - x₂ / t₁ - t₂

where;

x₂ - x₁ = change in displacement

t₂ - t₁ = change in time

The speed of the walking dude can be determined as follows:

1. Speed at t = 0.02 seconds

speed = 4 / 0.02

speed = 200 m/s

2.  Speed at t = 0.04 seconds

speed = 8 / 0.04

speed = 200 m/s

3.  Speed at t = 0.06 seconds

speed = 12 / 0.02

speed = 200 m/s

4.  Speed at t = 0.08 seconds

speed = 16 / 0.02

speed = 200 m/s

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Answer:

180

Explanation:

Because both are anti-parallel.

The best description of why astronauts have to wear gravity boots on the moon but not on Earth The moon's gravity is stronger than Earth's gravity.

The best description of why astronauts have to wear gravity boots on the moon but not on Earth is that the moon's gravity is weaker than Earth's gravity. The force of gravity is the attraction between two objects with mass, and the strength of the force depends on the mass of the objects and the distance between them. The moon has much less mass than the Earth, so its gravitational force is much weaker.

This means that objects on the moon weigh much less than they do on Earth, and astronauts have to wear gravity boots to keep from floating away. On the Earth, the force of gravity is much stronger, so objects are pulled down to the Earth's surface. This is why we don't need gravity boots to walk around on the Earth. The density of the surface or the magnetic properties of the surface do not play a significant role in this context.

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Mineral classes such as halides, sulfates, carbonates, oxides, and sulfides can contain all of the following elements except silica.

Answer:

silica

Explanation:

The mass of the cold water is 13 Kg

The law of conservation of mass states that in a closed system, the total mass of substances present in the system remains constant over time, regardless of the processes that take place within the system.

We can see that mass of the hot water = 10 Kg

Mass leaving = 33 Kg

Mass of the cold water = 33 Kg - 10 Kg

= 13 Kg

Since the mass is constant then if we apply the law of the  consideration of mas to the question that we have here we can see that the mass of teh cold water is 13 Kg.

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The height of the cliff, given that the sound of rock dropped from the cliff was heard 3.7 s later is 629 m

We know that echo of sound wave is given by the following formula:

Speed = (2 × distance) / time

Using the above formula, we can determine the height of the cliff. This is illustrated below:

Speed = (2 × height) / time

340 = (2 × height) / 3.7

Cross multiply

2 × height = 340 × 3.7

2 × height = 1258

Divide both sides by 2

Height = 1258 / 2

Height = 629 m

Thus, from the above calculation, we can conclude that the height of the cliff is 629 m

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Answer:

K.E = (p)^2 / 2m

Explanation:

the first method is : K.E = (p)^2 / 2m where p is the momentum of the object. so here u should be given the momentum and the mass of the object.

For a remote controlled car on the ground: X (t)= 5-20t e y(t)= -1+6t²-2t.

a) The trajectory of the particle can be found by plotting the values of x and y as a function of time, t.

b) The movement along each coordinate is 2 seconds.

c) Average acceleration and acceleration is 16m/s² and 2m/s² respectively.

b) The movement along each coordinate axis can be characterized by considering the behavior of x(t) and y(t) separately. The x-coordinate, x(t), decreases with time and reaches a minimum value of -15 at t=1 second. The y-coordinate, y(t), increases with time, reaches a maximum value of 3 at t=1 second, and then decreases to 0 at t=2 seconds.

c) To find the average acceleration in the first second of motion, find the average velocity over that time interval and then find its derivative. The average velocity in the first second of motion can be calculated as the average of the initial velocity and the final velocity. The initial velocity is -19 m/s and the final velocity is -13 m/s, so the average velocity is -16 m/s. The derivative of velocity with respect to time is acceleration. So, the average acceleration in the first second of motion is (13-(-19))/2 = 16 m/s².

The acceleration in t=1s can be found by taking the derivative of velocity with respect to time. At t=1 second, the velocity is -13 m/s and the acceleration is (3-(-1))/(1-(-1)) = 2 m/s².

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The statement that best describes the motion of Object A and Object B is that Object A moves with variable speed and Object B moves with constant speed.

The speed of an object is described as the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time. Speed is thus a scalar quantity.

From the graph, we can deduce that Object A moves with variable speed as there is change in its movement towards a specified part and Object B moves with constant speed.

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The real expansion of the apparent expansion of 0.00015 x 10⁻³  per Kelvin and the linear expansion of the container 0.00012 x 10⁻³ per kelvin is 1.8 x 10⁻¹³ per Kelvin.

Apparent expansion is the expansion we see when a liquid is heated without a vessel is called true expansion. The expansion of a liquid that is felt without taking into account the expansion of its container is called apparent expansion. The actual expansion of a liquid is always greater than the apparent expansion.

For actual expansion, the following formula is used:

real area = apparent area x linear area

So,

real expansivity = 0.00015 x 10⁻³ x 0.00012 x 10⁻³

real expansivity = 0.000000018 x 10⁻⁶

real expansivity = 1.8 x 10⁻¹³

The answer is 1.8 x 10⁻¹³ per Kelvin.

Your question is incomplete but most probably your full question was:

Given that apparent expansivity of a liquid is 0.00015x10(raised to power -3) per Kelvin and the linear expansivity of the container is 0.00012 x 10(raised to power -3) per Kelvin, calculate the real expansivity.

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1 kg of air passing through the turbine produces 1.98 kg m^2/s^2 of energy.

The energy produced by the turbine can be calculated as follows:

Energy = Efficiency x Kinetic Energy of air

Efficiency = 0.44

Kinetic Energy of air = 1/2 * Mass * Velocity^2

Mass = 1 kg

Velocity = 9 m/s

Plugging in the values:

Energy = 0.44 * (1/2 * 1 kg * 9^2 m^2/s^2) = 0.44 * (1/2 * 9 kg m^2/s^2)

= 0.44 * 4.5 kg m^2/s^2

= 1.98 kg m^2/s^2

So 1 kg of air passing through the turbine produces 1.98 kg m^2/s^2 of energy.

(b) The power output of the turbine can be calculated as follows:

Power = Energy / Time

Time = 1 s (time taken by 1 kg of air to pass through the turbine)

Plugging in the values:

Power = 1.98 kg m^2/s^2 / 1 s = 1.98 kg m^2/s^3

= 1.98 J/s

= 1.98 Watts

So the power output of the turbine is 1.98 Watts.

(c) The change in velocity can be calculated using the law of conservation of energy:

Initial Kinetic Energy + Work done on air = Final Kinetic Energy

Work done on air = Efficiency x Initial Kinetic Energy

Plugging in the values:

Initial Kinetic Energy = 1/2 * 1 kg * 9^2 m^2/s^2 = 40.5 kg m^2/s^2

Work done on air = 0.44 * 40.5 kg m^2/s^2 = 17.82 kg m^2/s^2

Final Kinetic Energy = 40.5 kg m^2/s^2 - 17.82 kg m^2/s^2 = 22.68 kg m^2/s^2

Final Velocity = sqrt(2 * Final Kinetic Energy / Mass)

Plugging in the values:

Final Velocity = sqrt(2 * 22.68 kg m^2/s^2 / 1 kg) = sqrt(45.36 kg m^2/s^2)

= 6.72 m/s

So the change in velocity of the air upon passing through the turbine is 9 m/s - 6.72 m/s = 2.28 m/s.

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The greenhouse effect refers to how "greenhouse gases" trap heat close to the surface of the Earth.

The term "greenhouse" refers to a building with glass walls & roof. Some of the plants grown in greenhouses include tropical flowers and tomatoes.

A greenhouse maintains a pleasant temperature even during the winter. The air and plants inside the greenhouse warm up when the sun comes out during the day. The greenhouse stays relatively warm, even when it gets a little chilly outside at night.

Similar principles govern how the greenhouse effect works on Earth. Gases in the atmosphere like carbon dioxide trap heat, much like a greenhouse's glass roof does. We refer to these gases as greenhouse gases because they trap heat.

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The labor involved in moving two charges from a distance of 'd 1 '=10 cm to a closer distance of 'd 2 '=4 cm must be determined for two charges q 1 =12 C and q 2 =8 C.

Between capacitor plates, the field is constant, but the potential rises linearly. As long as the geometry of the capacitor doesn't change, the capacitance won't either. The potential difference will therefore rise in a straight line with the charge since C = Q/V.

To do this, we first determine the charge in the system's potential energy and then take the difference.

Now, d 1 =10cm=1010 2 =10 1 m, and d 2 =4cm=410 2 m.

Consequently, potential (V 1) equals 4 0 when q 1 and q 2 are separated by d 1.

Potential (V 2) equals 4 0 when q 1 and q 2 are separated by a distance of d 2.

Work completed =V 2 + V 1 = 0

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D. moving the north pole end of a bar magnet toward the "bird side" of the round magnet.

Magnets work due to the movement of electrons, which creates a magnetic field. In a magnet, electrons are lined up in such a way that their magnetic fields are all pointing in the same direction, creating a net magnetic field. When a magnet is near a piece of ferromagnetic material, such as iron, the electrons in the ferromagnetic material start to line up with the electrons in the magnet, resulting in an attractive force. This is how magnets stick to each other and to other ferromagnetic objects.

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The height of the balloon is 1.3 miles above the ground.

Height is the measure of vertical distance, either how "tall" something or someone is, or how "high" the point is. For example, a person's height is typically measured using a stadiometer and is recorded in centimeters or feet and inches. The height of a mountain is usually measured in meters or feet. In aviation, height is measured from the surface of the earth, either above ground level (AGL) or above mean sea level (AMSL).

The answer to this question can be found by using the trigonometric formula of Tangent. To calculate the height of the balloon, we must find the length of the hypotenuse in the triangle formed by the two towns and the balloonist.

Using the formula for tangent, we can calculate the length of the hypotenuse. The formula is:

tan (angle) = opposite side/adjacent side

In this case, the opposite sides are the two towns, and the adjacent side is the height of the balloon.

For the first town, the formula is:

tan 36° = 1.6/x

Solving for x, we can calculate the length of the hypotenuse for the first town to be 2.8 miles.

For the second town, the formula is:

tan 32° = 1.6/x

Solving for x, we can calculate the length of the hypotenuse for the second town to be 2.9 miles.

Since the hypotenuse is the total distance between the two towns and the balloonist, the height of the balloon can be calculated by subtracting the total length of the two towns (1.6 miles) from the hypotenuse of the second town (2.9 miles).

The height of the balloon is 1.3 miles above the ground.

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Answer:

The speed of the truck in kilometers per hour at the end of the 20.0m distance is approximately 36.4km/h. The time elapsed is approximately 3.03 seconds.

Explanation:

Answer:

The speed of the truck in kilometers per hour at the end of the 20.0m distance is approximately 36.4km/h. The time elapsed is approximately 3.03 seconds.

Explanation:

Answer:

D

Explanation:

Energy can not be created or destroyed (law of conservation of energy), so that throws out choices A and B.  There are more classifications of energy than are listed in choice C.  D is the only true statement.

Answer:

A. To find the magnitude of R, we first need to find the vector R by adding the vectors r1, r2, and r3.

R = r1 + r2 + r3 = (3i + 2j + k) + (2i - 4j - 3k) + (-1i + 2j + 2k) = (4i - 2j + 2k)

The magnitude of R is given by the formula ∣R∣ = √(R⋅R), where R⋅R is the dot product of R with itself.

∣R∣ = √(R⋅R) = √(4i^2 + (-2j)^2 + (2k)^2) = √(16 + 4 + 4) = √(24) = 2√(6)

B. To find the magnitude of A, we first need to find the vector A by applying the scalar multiplication 2 to r1 and subtracting scalar multiplications of r2 and r3.

A = 2r1 - 3r2 - 5r3 = (6i + 4j + 2k) - (6i - 12j + 15k) - (-5i + 10j + 10k)

A = (6i + 4j + 2k) - (6i - 12j + 15k) - (-5i + 10j + 10k) = (11i + 2j - 13k)

The magnitude of A is given by the formula ∣A∣ = √(A⋅A), where A⋅A is the dot product of A with itself.

∣A∣ = √(A⋅A) = √(11i^2 + 2j^2 + (-13k)^2) = √(121 + 4 + 169) = √(294) = 2√(73)

The equivalent resistance of the circuit = 8 Ω. Current = 3 Ampere. Power =  72 watt.

A circuit in electronics is a complete circular channel via which electricity flows. A current source, conductors, and a load make up a straightforward circuit. In a broad sense, the word "circuit" can refer to any permanent path through which electricity, data, or a signal can pass.

The equivalent resistance of the circuit = 2 Ω + 4 Ω + (6 Ω || 3Ω)

= 8 Ω

Current flowing through the circuit = (24 V ÷ 8 Ω) = 3 Ampere.

Power = VI = 24 × 3 watt = 72 watt.

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Answer:c

Explanation:edge 2023

Answer: c is actually true

Explanation: