A plane is heading south at 250 mi/hr.  If the jet stream (wind) is blowing from west to the east at 80 mi/hr, what is the speed and direction of the plane?​

Answer:

La materia y energía interactúa entre sí de forma continua. De hecho, la materia estaría en un estado estático de forma estable si no fuera por la energía. De esta forma, materia y energía están interactuando entre sí constantemente, donde la materia sería el sujeto pasivo que padece la acción de la energía, mientras que la energía sería el sujeto activo que modificaría el estado de reposo o movimiento de la materia.

Explanation:

Answer:

Uranium

Explanation:

The most important in atomic research is Uranium, Uranium Can be used as fuel for nuclear power plants and the nuclear reactors that run naval ships and submarines, so option A is correct.

The atom is the smallest unit of matter that may be divided without generating particles with an electrical charge. Additionally, it is the tiniest material with characteristics similar to chemical elements. As a result, the atom acts as the basic building block of chemistry.

Space makes up the majority of an atom. The rest is made up of a positively charged nucleus made up of protons and neutrons that are surrounded by a cloud of negatively charged electrons. The nucleus is small and dense when compared to electrons, which are the lightest charged particles in nature. Electric forces, link electrons to the nucleus of atoms, causing them to be drawn to any positive charge.

Uranium that has been "enriched" to have a higher concentration of U-235 can power nuclear power plants, and It can also be applied to nuclear weapons.

Therefore, uranium is the most important in atomic research.

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Answer:

Distance

Explanation:

Answer:

i cant explain well but the answer is letter b

x-5

Explanation:

dont report me or i will report you too

Answer:

x-5 is the answer

Explanation:

pick her as the brainliest

Answer: B

Explanation: efficiency is the useful energy supplied; useful energy supplied doesn't not change,
work done stays constant

in order to to increase the power of the motor, time would have to be decreased to get the wanted result..

When he  increases the input power to the motor and repeats the experiment, work done stays the same but time taken decreases.

The quantity of energy moved or converted per unit of time is known as power in physics. The watt, or one joule per second, is the unit of power in the International System of Units. Power is also referred to as activity in ancient writings. A scalar quantity is power.

A motor's output power is calculated by multiplying its torque output by the angular velocity of its output shaft.

To lift a load through a vertical distance of 2.0m, in the both cases same amount of work-done happens because the displacement is same.

But as the input power, in second case, increases but the efficiency of the motor does not change, the time taken decreases ( as time taken = work done/power)

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Answer:

NO

Explanation:

if it has no acceleration then it's not moving

Answer:

Yes when the velocity is constant then the acceleration is said to be zero. Thus an object with 0 acceleration can be in motion.

Let me give you an example to make you more clear

Example:

When  a car is  traveling at a constant 90 km/h in a straight line has nonzero velocity and zero acceleration.

Answer:c

Explanation:c

This question involves the concepts of the time period, orbital radius, and gravitational constant.

The theoretical period of the moon is "658 hr".

The theoretical time period of the moon around the earth can be found using the following formula:

\(\frac{T^2}{R^3}=\frac{4\pi^2}{GM}\)

where,

T = Time Period of Moon = ?

R = Orbital Radius = 3.84 x 10⁸ m

G = Gravitational Constant = 6.67 x 10⁻¹¹ N.m²/kg²

M = Mass of Earth = 5.97 x 10²⁴ kg

Therefore,

\(\frac{T^2}{(3.84\ x\ 10^8\ m)^3}=\frac{4\pi^2}{(6.67\ x\ 10^{-11}\ N.m^2/kg^2)(5.97\ x\ 10^{24}\ kg)}\\\\T^2=(9.91\ x\ 10^{-14}\ s^2/m^3)(56.62\ x\ 10^{24}\ m^3)\\\\T=\sqrt{561.34\ x\ 10^{10}\ s^2}\)

T = 2.37 x 10⁶ s\((\frac{1\ h}{3600\ s})\)

T = 658 hr

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The attached picture shows the derivation of the formula for orbital speed.

Answer:

Explanation:

Warmth or a burning sensation in your hands can also be a symptom of peripheral neuropathy. This condition involves nerve dysfunction due to nerve damage from an underlying condition. Other symptoms may include: tingling in the hands or feet

Answer:

Because when you hand touches it the fire has been heating up the pan so it’s hot

Explanation:

Answer: Material is any substance that an object is made from.

All materials are made up of matter.

Examples include: glass, Chalk, paper, and wax, which are different types of materials

Answer:

Harmful bacteria are called pathogenic

Explanation:

Harmful bacteria are called pathogenic bacteria because they cause disease and illnesses like strep throat, staph infections, cholera, tuberculosis, and food poisoning.

The initial horizontal velocity of the projectile is 22.1 m/s.

The given parameters;

The time of motion of the object is calculated as follows;

h = ut + ¹/₂gt²

where;

h = ¹/₂gt²

\(t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2\times 25}{9.8} } \\\\t = 2.26 \ s\)

The initial horizontal velocity of the projectile is calculated as follows;

R = vₓt

\(v_x = \frac{R}{t} \\\\v_x = \frac{50}{2.26} \\\\v_x = 22.1 \ m/s\)

Thus, the initial horizontal velocity of the projectile is 22.1 m/s.

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Answer:

False

Explanation:

Given: A crate is sliding down an inclined ramp at a constant speed of 0.55 m/s.

To find: whether the given statement is true or false

Solution:

As a crate is sliding down an inclined ramp at a constant speed of 0.55 m/s, net force is equal to 0 and so, the vector sum of all the forces acting on the crate can't point anywhere.

So, the given statement is false.

The instruments used to accurately measure the positions of the planets are called astronomical or celestial instruments.

Some commonly used instruments for this purpose include:

1. Telescopes: Optical telescopes are used to observe celestial objects, including planets, and measure their positions relative to the background stars.

2. Sextants: Sextants are navigational instruments that were historically used for celestial navigation, including determining the positions of celestial bodies such as planets.

3. Astrolabes: Astrolabes are ancient astronomical instruments used for solving problems related to time and the positions of celestial objects, including planets.

4. Theodolites: Theodolites are precision instruments used for measuring angles in horizontal and vertical planes. They have been used in celestial observations to measure positions and angular distances between planets and other celestial objects.

5. Photographic plates: In the past, photographic plates were used to capture images of the night sky. By comparing the positions of planets on different plates taken at different times, astronomers could determine their motions and positions accurately.

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Answer:

Evaporation

Explanation:

Evaporation occurs when a liquid changes to a gas. During evaporation, molecules gain enough thermal energy to escape from the liquid surface into the air as water vapor. Water-vapor molecules spread out, breaking completely free of each other, and then disperse or spread out among the other gas molecules in the air.

Hope this helps stay safe

love anyla..

Answer:

evarporation that is the answer i think because molecules of liqid are sperated thats why when in boiling water The molecules move apart and escape in vapour even i don't think it is the right answer

To determine how close together two point sources could be at a 2-million-light-year distance, like the Andromeda Galaxy, you'll need to consider the following factors:

1. The distance of the point sources: In this case, it's 2 million light-years away, which is the approximate distance of the Andromeda Galaxy from Earth.
2. The angular resolution of the observing instrument: This is the minimum angular separation between two objects that an instrument can resolve. This value depends on the specific telescope or device you are using to observe the point sources.

To calculate the minimum separation between the point sources, you can use the formula:
Minimum separation (in light-years) = Distance (in light-years) * Angular separation (in radians)

You'll need to know the angular resolution of the observing instrument to determine the minimum separation. Once you have the angular resolution, you can convert it from arcseconds to radians by dividing it by 206,265 (since 1 radian equals 206,265 arcseconds). Then, you can plug that value into the formula above to find the minimum separation in light-years.

In summary, to find how close together the point sources could be at the 2-million-light-year distance of the Andromeda Galaxy, you need to know the angular resolution of the observing instrument, convert it to radians, and then use the formula above to calculate the minimum separation in light-years.

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Answer:

what exactly are the following?

Answer:

If the potential difference between the ends of the wire are the same then wire Y will experience a smaller drift speed. This is necessary to explain the difference in resistivity.

Answer:

Im pretty sure its c

Explanation:

Diana is paddling upstream.

Geese are moving downstream.

Apparent speed reduction of geese will happen according to Diana if her speed is increased.

This can be done by paddling faster upstream.

Many bird wings are more convex on the upper surface than they are on the lower surface, this enables the wing to provide greater lift because A. air moves more slowly over the top surface of the wing than over the lower surface.

This difference in air pressure leads to the creation of an upward force called lift that counteracts the force of gravity on a bird's wings to keep it aloft.The upper surface of the bird's wings has a more curved shape and a higher angle of attack than the lower surface. Due to this shape, the air moves faster over the wing's surface, which results in a lower pressure zone above the wing.

Meanwhile, the air below the wings moves slower and thus, there's a higher pressure zone below the wing. The difference in pressure creates a lifting force that helps the bird to fly. In summary, the more convex shape of the upper surface of a bird's wing creates a lower air pressure zone above it and a higher air pressure zone below it, thus providing greater lift that enables the bird to fly and glide. So the correct answer is  A. air moves more slowly over the top surface of the wing than over the lower surface.

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The value of the spring constant is 5000 Nm⁻¹.

The spring constant is the force needed to stretch or compress a spring, divided by the gap that the spring gets longer or shorter. it is used to determine balance or instability in spring, and consequently the gadget it is supposed for. Spring regular (plural spring constants) (physics) A function of a spring that is defined as the ratio of the force affecting the spring to the displacement because of it.

k represents the constant of proportionality, also referred to as the spring constant.  In layman's terms, the k variable in Hooke's law (F = -kx) indicates stiffness and electricity. The higher the price of ok, the extra force is needed to stretch an item to a given period.

Calculation:-

F = 100 N

X = 22 - 20 cm

 = 2 cm = 0.02 m

F =-kX

k = F/X

  = 100/0.02

  = 5000 Nm⁻¹

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The distance from the axis of the force applied is 2.05 m.

The distance from the axis of the force applied is calculated as follows;

The formula for torque;

τ = Fr

where;

Another formula for torque is given as;

τ = Iα

where;

τ = (mr²)α

τ = (25 kg x (0.925 m)²) x (1.84 rad/s²)

τ = 39.36 Nm

The distance is calculated as;

r = τ/F

r = ( 39.36 Nm ) / (19.2 N)

r = 2.05 m

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To answer this question, the tangential speed of the bob must be calculated. The formula for tangential speed is v = rω, where r is the radius of the circle and ω is the angular velocity.

To calculate the angular velocity, we must use the formula ω = θ/t, where θ is the angle from the vertical and t is the time it takes for one complete revolution of the bob around the circle.
Once we have the angular velocity, we can plug it into the formula for tangential speed. Thus, the tangential speed, v, for the bob must be v = rω, where r is the radius of the circle and ω is the angular velocity which is equal to ω = θ/t, where θ is the angle from the vertical and t is the time it takes for one complete revolution of the bob around the circle.

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The minimum work needed to push a 1000 kg car 300 m up a 17.5-degree incline

Given by the following steps;

Step-We calculate the gravitational potential energy (GPE) of the car as it's lifted up the incline. This will be equal to the minimum work required to push the car up the incline. The GPE is given by;GPE = mgh. Where m = mass of the car = 1000 kg; g = acceleration due to gravity = 9.81 m/s²; h = height gained = 300 sin(17.5°) = 84.4 mGPE = mgh = 1000 × 9.81 × 84.4 = 829,944 J

Step 2If we consider friction, we can calculate the minimum work required as follows:Total work done = work done against gravity + work done against frictionW = GPE + work done against friction

Where the work done against friction is given by; Wf = friction force × distance × cos(θ)Here θ = angle of incline = 17.5° and the friction force is given by the product of the effective coefficient of friction (µ) and the normal force. The normal force is equal to the component of the weight of the car that acts perpendicular to the incline.Nf = mg cos(θ)Wf = µNf × distance × cos(θ) = µmg cos²(θ) × distance × cos(θ) = µmgdcos²(θ)W = mgh + µmgdcos²(θ)Substituting m, g, h, d, and µ into the equation gives;W = 1000 × 9.81 × 84.4 + 0.25 × 1000 × 9.81 × 300 × cos²(17.5)W = 1,454,392 J

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Answer:

It gets hotter and hotter and it would start to be a liquid lava

Explanation:

Energy is transferred to the charge is 120J

What is energy?

Energy is a general term that we use frequently in our daily lives. Although the term "energy" is frequently misused, it has a specific physical meaning. In physics, energy is defined as something's ability to accomplish work. Energy can take various forms. All energy is either kinetic or potential. Let us take a closer look at what energy is and the many sorts of energy in this post.

On Earth, there are various types of energy. On Earth, the sun is considered the elemental form of energy. Energy is a quantifiable property in physics that can be transferred from an item to perform work. As a result, we can define energy as the ability to perform any type of physical activity.

According to the laws of energy conservation, "energy cannot be generated or destroyed; it can only be transformed from one form to another." Joule is the SI unit of energy. One of the fundamental rules of physics is the law of energy conservation. It regulates the movements of individual atoms in a chemical process at the microscopic level. According to the rule of conservation of energy, "the entire energy of the system is conserved in a closed system, i.e., a system that is separated from its surroundings." Even when energy transformation happens, the overall energy in a system is conserved, according to the law. Energy can't be created or destroyed.

E = Q X V

E=10X12

E=120J

Therefore, energy is transferred to the charge is 120J

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The energy needed to launch an object from the surface of Earth to a height h above the surface is given by E = mgh + (1/2)mv², where m is the mass of the object, g is the acceleration due to gravity, v is the launch speed, and h is the height.

When an object is launched from the surface of Earth to a height h, it gains potential energy and kinetic energy. The potential energy gained is given by mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height. The kinetic energy gained is given by (1/2)mv², where m is the mass of the object and v is the launch speed.

The total energy required to launch the object to a height h is the sum of these two energies, which gives E = mgh + (1/2)mv². This expression is important in rocket science and aerospace engineering, as it helps to determine the energy requirements for launching a spacecraft or satellite into orbit or beyond. It also helps to optimize the design and performance of launch vehicles, by minimizing the energy requirements and maximizing the efficiency of propulsion systems.

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Answer:

when a two bodies A and B are moving at an angle 180° with each other then the relative velocity is the sum of bodies the velocity .i.e,

when the bodies move the opposite direction

then their relative velocity is the sum of individual velocities.

Answer:

Option C, 139 m/s

Explanation:

s = d/t

s = 500*10^3/3600

s = 138.8 = 139 m/s

How long it takes an object to move a certain distance if we know its average speed and the total distance it covers. As previously, it makes no difference whether the speed is constant or not; all that matters is the average distance travelled. Thus, option C is correct.

The object's average speed is the total distance it travels in a predetermined amount of time. A scalar value represents the typical speed. It is characterized by the magnitude and lacks direction.

A body's average speed is its mean value over a given amount of time. Since a moving body's speed fluctuates over time and is not constant, an average speed formula is required.

Therefore, s = d/t s = 500×10^3/3600 s = 138.8 = 139 m/s. Distance travelled divided by time passed equals average speed.

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