How many seconds are there in 7days​

The principle of conservation of energy allows to find the result for the mechanical energy of the system is:

Mechanical energy is defined by the sum of the kinetic energy and the potential energies.

            Em = K + U

In the principle of energy conservation, it establishes that energy cannot be created or destroyed, it is only transformed, in the case of no friction, mechanized energy is conserved at all points.

They indicate that the system is rotating, which is why it is subjected to a force that expends its energy in changing the direction of the speed to keep the system in rotation, so the speed of the system remains constant.

          Em = K = ½ I w²

Consequently, using the principle of conservation of energy we can find the result for the mechanical energy of the system is:

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Answer:

The answer is False

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It is false that a neutral atom has the same number of protons as it does neutrons. The correct option is B.

The claim that "A neutral atom has the same number of protons as it does neutrons" is untrue. Protons and electrons in a neutral atom are equal in number, but neutron counts can change.

Electrons have a negative charge, whereas protons have a positive charge. A neutral atom has a net charge of zero because the protons' positive charge is balanced by the electrons' negative charge.

Neutrons don't have an electric charge, though. Within a single element, the amount of neutrons can change, giving rise to many isotopes.

Isotopes contain the same amount of protons, but their atomic masses vary depending on how many neutrons they have.

Thus, the correct option is B. False.

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The waves with a frequency f = 10.0 kHz lie in the radio part of the electromagnetic spectrum.

The electromagnetic spectrum is the range of all types of electromagnetic radiation. It includes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. The position of a wave on the spectrum is determined by its frequency and wavelength. The waves with a frequency f = 10.0 kHz have a wavelength of approximately 30,000 meters, which falls within the radio part of the spectrum.

Radio waves have the longest wavelengths and the lowest frequencies in the electromagnetic spectrum. They are used for broadcasting and communications, such as radio and TV signals. Therefore, the waves with a frequency f = 10.0 kHz belong to the radio part of the electromagnetic spectrum.

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Answer:

Explanation:

Basically because they are big and relatively near.

The light coming from a star travels a huge distance and is acted upon by the earth's atmosphere with causes all sorts of shifts. What we are seeing twinkle is caused by these shifts, for the most part caused by atmospheric density and heat.

The beam from a planet is not narrow enough to be affected the way the stars are.. If you were out in space looking at all this, the stars would not appear to twinkle either.

Answer:

7.07 s

69.3 m/s

Explanation:

Taking the negative direction to be down and the positive direction to be up:

We have 3 variables in the y-direction and can solve for time.

Use this kinematics equation to solve for time.

It will take the ball 7.07 s to reach the ground.

We can solve for final velocity using the same variables in the y-direction:

Use this kinematics equation to solve for final velocity.

The ball will be traveling at a speed of 69.3 m/s at the instant before it reaches the ground.

The angular speed of the ride is 0.533π rad/s.

The speed of an object, which is a scalar quantity in everyday usage and kinematics, is the size of the change in that object's position over time or the size of the change in that object's position per unit of time.

Given that, to complete one rotation the ride takes 3.75 sec.

The angle traversed in one revolution is 2π.

In physics, the rotational velocity or angular velocity also referred to as the angular frequency vector, is a pseudovector that illustrates how quickly an object's angular position or orientation changes over time.

The formula of angular speed is  ω = θ /t

Here  θ = 2π and  t = 3.75

The angular speed is

ω = 2π/3.75

ω = 0.533π rad/s

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Explanation:

Gravity always pulls objects such as a desk, book or person down. Thus, when you jump, gravity causes you to land on the ground. Friction, however, doesn't pull objects down. Instead friction occurs when something like a machine or individual pulls a sliding objects in the opposite direction of another object.

Pull affects gravity and friction in different ways. In fact, unlike gravity, friction doesn't rely on a natural force. The force of friction acting on the pages in a major reason that pulling the books apart is so different.

Answer:

it = 5.5e-5 cm

just tyoe in on the search bar nm to cm and a calculatro comes up

Explanation:

The acceleration due to gravity is constant even at the top of its flight and its direction will be towards to ground (Downwards).

The horizontal distance of an object in projectile motion relative to its origin is referred to as its range. Only at the highest point of a thrown object's flight does vertical (y) speed equal zero. This component of velocity does not change over time since there is no horizontal acceleration in the absence of air resistance.

For many people, this is a counterintuitive idea. (Depending on the object, air resistance will result in a little or major drop in velocity. However, for the time being, this aspect is disregarded.) Gravitational acceleration must be included in a vertical motion, and as a result, the vertical velocity evolves with time.

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Answer:

F = 28 N

Explanation:

Data:

Use formula:

Replace:

Multiply:

What is the force it will apply to a cup when it strikes it? ​

The force applied to the cup is 28 Newton.

Answer:

y = m x + b      is the equation for a straight line

s = v t       is in this format (b or distance = zero at start)

v = m is the slope  of the line and of course, t is the x-axis and s the y-axis

The area under the curve represents v / 2 * t which is the average speed multiplied by the time traveled

This is due to the fact that occluded fronts combine two cold air masses, which causes one of the cold air masses to go downward.

When a warm air mass is sandwiched between two cold air masses, an occluded front occurs. In an occlusion, the warm front passes over the cold front, which dives beneath it.

In a front is obscured, the warm front is fully supplanted by the cold front, in which the warm air masses have completely disappeared. Furthermore, there are frequent shifts in the various weather producing circumstances because of the cold front's relatively low temperature.

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Yes, the particle moves in the positive x-direction (to the right) or the negative x-direction (to the left) due to the forces of attraction and repulsion.

When the particle's velocity is positive, it is travelling to the right. When the velocity is negative, it also moves to the left. A body with a higher mass may have a lower moment of inertia than a body with a lower mass. This relies on the mass distribution and axis with respect to which we are computing the moment of inertia. In real-world situations, we frequently avoid dealing with particles.

The time it takes for a constant force to bring a particle to rest, on the other hand, is represented by its momentum.

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First aid suggestions include:

Hold your face under running water for 15 to 20 minutes and allow the water stream to flood into your eyes. Use your fingers to hold your eyelids apart (make sure there is no trace of the chemical on your fingers).

If you wear contact lenses, remove them as soon as possible.

Seek immediate medical advice. Medical staff will need to know what chemical was involved, particularly whether it was acid or alkaline, liquid or powder.

Do not judge the seriousness of your eye injury on the degree of pain. For example, alkali chemicals don’t usually cause significant symptoms, but can seriously damage the eye.

Powder or particulate (granular matter, like wet concrete) chemicals can be particularly damaging since they are more difficult to flush out.

Answer:

immediately wash eyes with water

Answer:

Gravitational potential energy

Explanation:

PE = m*g*h

m = mass

g = 9.81m/s², acceleration of gravity

h = height

So m and g stay the same but the height can change so the higher you go the higher the Gravitational potential energy.

Placing a soccer ball on the top shelf increases the Gravitational potential energy

In a gravitational field the energy possessed by an object due to a change in its position called as gravitational potential energy, it is an energy that is related to gravitational force or to gravity.

When a mass of the body  (m) is moved from infinity to a point inside the gravitational influence of a source mass (M) in absence of acceleration and the amount of work done in displacing it into the source field is stored in the form of potential energy denoted with the symbol Ug.

when external force is applied, then the  position of the body changes potential energy is equal to the amount of work done on the body by the forces.

The gravitational influence on a body at infinity is zero, then the  potential energy is zero, PE = m*g*h where m = mass, g = 9.81m/s², acceleration of gravity, h = height

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As the given statement is False. As a substance that heats up relatively quickly must has a high specific heat capacity.

A physical property of matter is specific heat capacity. The quantity of heat energy required to raise a substance's temperature per unit of mass is known as the specific heat capacity. It serves as an illustration of a large property. Since the scale of the system under study directly affects it. Therefore, it is the amount of heat absorbed by the substance per unit mass when its temperature is elevated. Specific Heat Capacity is measured in J/(kg K) or J/(kg °C) units.

As heating is quick when the substance have high specific heat capacity and the heating will be slow when the substance have less specific heat capacity.

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needs to go—energy, or heat.

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