What net force is required to accelerate a truck at a rate of 4 m/s² if the truck has a mass of 5,000 kg?

Answer:            The ice molecules expand and  become stuck since the water is frozen and start to vibrate

Explanation:

According to the concept of thermal energy, as the temperature rises thermal energy increases and molecules start vibrating faster and ice changes it's state to water  that is from solid to liquid.

Thermal energy is defined as a type of energy which is contained within a system and is responsible for rise in temperature.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.

Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance containing  molecules or atoms are vibrating faster.

These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the  number of collision of particles , higher is the thermal energy.

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Answer:

This is because the 11 positive protons and 10 negative electrons end up with an overall charge of +1.

Explanation:

Answer:

One electron in it's outer shell

Answer:

3000 N

Explanation:

As we know that

pressure=force/area

force=thrust

so pressure=thrust/area

thrust=pressure*area

pressure=150 Nm^-2

area=20m^2

so thrsut=150*20=3000 N

The acceleration of a bike which increases its speed from 0 to 40 ft/s in 4 seconds will be 3 m/s².

Given, initial speed (u) = 0

Final speed (v) = 40 ft/s = 12 m/s

Time taken = 4 seconds

From the equation v = u + at, we have

12 = 0 + a x 4

12 = 4a

a = 3 m/s²

The equation a = v/t denotes acceleration (a), which is the change in velocity (v) over the change in time (t). This enables you to calculate the change in velocity in meters per second squared (m/s²). Since acceleration is a vector quantity, both its magnitude and its direction are included.

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The mechanical advantage of the system pictured on the left if the diameter of the wheel is 15 feet and the diameter of the axle is 3 feet is 5.

To calculate the mechanical advantage of the system pictured on the left, we need to determine the ratio of the radius of the wheel to the radius of the axle, as this will give us the ratio of the distances moved by the wheel and axle.

The radius of the wheel is half its diameter or 7.5 feet. The radius of the axle is half its diameter or 1.5 feet.

Therefore, the mechanical advantage of the system is:

Mechanical advantage = radius of wheel/radius of the axle

Mechanical advantage = 7.5 feet / 1.5 feet

Mechanical advantage = 5

So the mechanical advantage of the system pictured on the left is 5.

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Answer:

Light wave is an EM wave that can only be seen by humans New questions in Physics Engineers at the Space Centre must determine the net force needed for a rockets engine to achieve an acceleration of 70 m/s2.

Explanation:

The right answer is electric current

If this anser is right pls follow me

Answer:

Explanation:

A Solid is one of the three main states of matter. By definition a solid is something whose molecules are so densely packed together that it allows it to keep its shape. Therefore if the item has a definite shape that does not change on it's own it is a solid. As opposed to a liquid which will take and fill the shape of it's container.

Answer:

the answer  is bts

Explanation:

3erdccdcwdcefdvefvwefwedc3rv3rv3vrecwscx

Answer:

false

A hypothesis states a presumed relationship between two variables in a way that can be tested with empirical data. ... The cause is called the independent variable; and the effect is called the dependent variable.

Answer:

Sorry for the bad drawing, as you have not specified whether is should be open switch or close I have drawn both

I hope it helps.

The statement that rules of thumb are known as a non-traditional approach to setting standards is false. Rules of thumb are actually a traditional and informal method of making rough estimations or decisions.

Contrary to the statement, rules of thumb are not considered a non-traditional approach to setting standards. In fact, they have been used for centuries as a traditional and informal way to make rough estimations or decisions. Rules of thumb are practical guidelines or principles that are based on experience or common sense rather than precise measurements or formal procedures.

These rules are often used in various fields, such as engineering, construction, finance, and everyday life. They serve as quick and convenient methods to make approximate calculations or judgments when precise data or detailed analysis may not be available or necessary. For example, the "rule of thumb" that suggests spending around 30% of your income on housing expenses is a commonly used guideline in personal finance.

While rules of thumb can be helpful in certain situations, it's important to recognize their limitations. They are not meant to replace rigorous analysis or professional judgment. Depending solely on rules of thumb can lead to inaccuracies or oversimplifications. Therefore, they should be used with caution and in conjunction with more precise methods when necessary.

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Answer:

Shangdi or A: Di

Explanation:

Shangdi was considered to be the supreme deity during the Shang dynasty (1600–1046 century BCE), but during the Zhou dynasty (1046–256 BCE) he was gradually supplanted by heaven (tian).

Answer:

Objective Lenses: Usually you find 3 or 4 objective lenses on a microscope. They almost always consist of 4x, 10x, 40x and 100x powers, when coupled with a 10x (most common) eyepiece lens, total magnification is 40x (4x times 10x) 100x, 400x and 1000x

Explanation:

Objective lenses come in various magnification powers, with the most common being 4x, 10x, 40x, and 100x, also known as scanning, low power, high power and typically oil immersion objectives, respectively

When a light source falls on an object if it is a opaque object it will form shadow.

And the light falls on the largest cardboard there will be a big shadow formed in the wall. Now when we take a second cardboard the shadow will form in accordance with that cardboard that if the cardboard is more it will form small shadow

And when we do with the same third cardboard or small cardboard the shadow will be according to the size of the cupboard now when we keep a plastic shopping bag in between the light source and the wall if the plastic bag is transparent the light will pass through the plastic bag and if the plastic bag is opaque the light will not pass through the bag and a shadow will be not be formed

Here we can conclude that if a light is passing through a pack object the light cannot pass through the object and it will format shadow but when the light is passing through a transparent object that light will pass through the object and there will be no shadow formed

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The beam can be lifted at a distance of approximately 770.27 meters.

The quantity of energy transmitted when a force is applied across a distance is measured by the physical concept of work. A force must be applied to an object in order for it to move in the direction of the force and perform work. The unit of measurement for work is the joule (J), which has a magnitude but no direction.

To find the distance of the beam can be lifted, use the formula:

Work = force × distance × cos(θ)

Distance = 57000 J ÷ (74 N × cos(θ))

= 770.27 meters

Thus, the capacity of beam 770.27 meter.

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Answer:

Centripetal force is the force that is necessary to keep an object moving in a curved path and that is directed inward toward the center of rotation, while centrifugal force is the apparent force that is felt by an object moving in a curved path that acts outwardly away from the center of rotation

Explanation:

Hope this helps!

Brainliest if correct pls

Answer: wind pushes directly against the blades of the turbine, which converts the linear motion of the wind into the rotary motion, then it spins the generator's rotor and the harder the wind pushes, the more electrical energy can be generated.

Explanation:

The correct statement regarding lightning is as follows: Victims who are struck by lightning often experience severe full-thickness burns (option A).

Lightning is an electrical discharge caused by imbalances between storm clouds and the ground, or within the clouds themselves.

Lightning strike is a lightning bolt, stroke of lightning, one of the events during an electrical storm when lightning strikes (an object on) the ground or an aircraft in flight.

Most deaths after lightning strikes occur either because of primary cardiac arrest or hypoxia-induced secondary cardiac arrest, however, survivors have experienced debilitating injuries, burns and ongoing disability, including symptoms like seizures and memory loss.

Therefore, severe full-thickness burns are the symptoms or signs of lightning strike.

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Yes, if you were on Earth observing the motion of Mars against the background of stars, Mars would appear to move forward and backward in what is called "apparent retrograde motion".

This happens because of the difference in orbital speeds between Earth and the Mars. As the Earth catches up with and passes the Mars in its orbit, Mars appears to slow down, move backward, and then move forward again as Earth moves ahead.

This motion is observed over a period of several weeks and is caused by the relative positions and motions of the Earth, Mars, and the Sun.

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Answer:

carbon dioxide

Explanation:

Answer:

carbon dioxide

Explanation:

trust

Answer:

375 km

Explanation:

Using the equation, d = vt, we simply plug in the numbers:

v = 150 km/hr

t = 2.5 h

d = (150 km/hr)*(2.5 h)

d = 375 km

The magnetic field's strength at point p is 3.16*10-5 T, which is measured in teslas. A magnetic field is indeed a vector field that explains the magnetic impact on moving electric charges, pulsed electrical.

Around a magnet, where magnetism is present, is a region known as the magnetic field. To represent the distribution of the magnetic force in the area surrounding and inside something magnetic in nature, we utilize the magnetic field as a tool.

South and north poles are present in every magnet. In contrast to each other repelling each other, opposite poles are drawn to one another. The north-seeking poles of the iron's atoms align in the same direction when you run a piece of iron along a magnet. A magnetic field is created as a result of the force produced by the aligned atoms.

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The type of radioactivity that has a negative charge is beta rays.

Alpha rays consist of particles which have two protons and two neutrons identical to a positively charged helium nucleus. They get attracted towards the negatively charged plate as they possess a charge of +2. They have very high ionization power.

Beta radiation has a negative charge because it contains particles similar to an electron. It contains the same mass as an electron, and the mass is lower than proton and neutron masses. Also, each particle contains a single negative charge, making the radiation negatively charged.

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The number of protons in an atom is known as the atomic number

Answer:

Number of protons

Explanation:

It is denoted by the letter Z

Answer:

It is A i think

Explanation:

The statement "The current through an ideal current source increases as the voltage across it increases" is FALSE.

Explanation:An ideal current source is a two-terminal device that delivers a constant amount of current to a circuit, regardless of the voltage that appears across its terminals.

The current is supplied by an active element, such as a transistor or operational amplifier, that acts as a controlled current source.

In an ideal current source, the current delivered is independent of the voltage across the source terminals.

That is, the voltage across an ideal current source can be any value, positive or negative, and the current will remain constant.

Therefore, the current through an ideal current source does not increase as the voltage across it increases.

So, the given statement "The current through an ideal current source increases as the voltage across it increases" is false.

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The magnitude of the current in wire 3 is (I₃)= 0.33A

To calculate the magnitude of the current in wire 3 we are using the Kirchhoff’s current law,

I₁ + I₂ + I₃ = 0

Where we are given,

I₁ = current in wire 1

=0.40 A.

I₂ = current in wire 2

= -0.73 A.

We have to calculate the magnitude of the current in wire 3, I₃

Now we put the known values in above equation, we get,

I₁ + I₂ + I₃ = 0

Or, I₃ = -.(I₁ + I₂)

Or, I₃ = -.(0.40 - 0.73)

Or, I₃ = 0.33 A

From the above calculation, we can conclude that the current in wire 3 is  I₃ = 0.33 A

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