Ok someone help me brainlest will be given
1.With what will a car hit a tree if the car has a mass of 3,000 kg acceleration of m/s^2
2.What force would be needed to make 10kg bowling ball acceleration of 3m/s^2
3. What would be the mass of a truck if it is accelerating at a rate of 5m/s^2 and hits a parked car with a force of 14000 N
4.What is the acceleration of a softball if it has a mass of 0.50 kg and hits the catcher's glove with a force of 25 N
5.How much does a suitcase weigh if has a mass of 22.5 kg
6. What would the mass of a rock falling from the sky if it hits the ground with the force of 147N
7.Find the acceleration of the stacks of books pictured if the stack has a total mass 1.5 kg
8. A kg model airplane is traveling at a speed 33m/s.
The operator than increases the speed up to 45 m/s in seconds
How much force did the engine need in order to make this change.

Both objects will have the same temperature, which is larger than T but smaller than 2*T

A system in equilibrium if it is not able to experience spontaneous changes.

Here, we assume that our system is just the two objects with the given temperatures, and nothing else.

Thus, when we put them together, the only thing that will happen is a heat transfer (from the hotter object to the other one), until both of them have the same temperature (when both objects have the same temperature the heat flux stops).

Also, the object with temperature 2*T loses temperature, while the object with temperature T increases its temperature, then we can conclude that the final temperature of both objects will be in between these:

T < Tₓ < 2*T

To get the exact final temperature, we would need more information.

So what will be true after some time has passed?

The only thing that we know will happen is:

Both objects will have the same temperature, which is larger than T but smaller than 2*T

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Answer: Thermodynamics Unit Test

1. Heat will flow from Object B to Object A.

2. Heat flows due to a temperature difference between two objects.

3. 100 J/g

4. 9,887.5 J

5. Some heat is always lost to the environment.

6. Short Answer Question

Explanation:

100% correct

Answer: find the answer in the explanation as kinetic energy converts to potential energy.

Explanation:

Before the truck driver sees a dog running into the road, The mechanical energy state of the truck will be kinetic energy at maximum.

Immediately he applied the brakes, the mechanical energy of the truck will be combination of kinetic energy and potential energy.

The kinetic energy will gradually decrease as potential energy continue to increase till it reaches maximum potential energy.

The truck will come to a stop at maximum potential energy

TNT has a heat of combustion of -3406 kJ/mol compared to sugar's -5639 kJ/mol.

what is heat of combustion?

The quantity of heat released when a specific amount of a substance undergoes burning is known as the heat of combustion, also known as the calorific value or the energy value. In most cases, the terms "heat of combustion" and "calorific value" are interchangeable. Calorific value is the term used to describe the total amount of energy released during the complete combustion of a given mass of a substance in the presence of (an adequate amount of) oxygen under typical conditions of pressure and temperature.

TNT has a heat of combustion of -3406 kJ/mol compared to sugar's -5639 kJ/mol.

TNT is an explosive because it explodes more quickly due to its lower heat of combustion. Sugar is not explosive and will take a lot longer to heat up or burn.

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The average person's vertical jump on the Moon would be 0.65 m.

The gravitational acceleration near the surface of the Moon is 1.62 m/s2, which is about one sixth the gravitational acceleration on Earth.

As a result, an average person's vertical jump on the Moon would be less than on Earth.

To calculate the vertical jump on the Moon, we need to use the formula h = 1/2 x g x t2.

This equation is used to calculate the height h (in meters) that an object will reach when thrown into the air, given the gravitational acceleration g (in m/s2) and the time t (in seconds) it takes to reach the peak of the jump.

Since the gravitational acceleration on the Moon is 1.62 m/s2, and the time taken to reach the peak of the jump is the same (assume 0.5 s), then h = 0.5 x 1.62 x (0.5)2, which is 0.65 m.

Therefore, an average person's vertical jump on the Moon would be 0.65 m.

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Answer:

Resistance / Edge 2022

Explanation:

This is late, but just in case someone needs the answer. Hope this helps!

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Tungsten metal is used exclusively for making the filament of electric bulbs because it has a very high melting point

Tungsten metal is used exclusively for making the filament of electric bulbs because it has a very high melting point. Due to its high melting point, the tungsten filament can be kept white-hot without melting away

Tungsten wire is used as the filament in light bulbs. It glows white-hot as current passes through it.

Tungsten is used in light bulbs because its high resistivity converts electric energy into light and heat.

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Answer:

A modulation is a voltage, frequency, pulse, or phase change in an analog transmission.

Explanation:

A modulation is a voltage, frequency, pulse, or phase change in an analog transmission. It is a process by which a signal, such as an audio or video signal, is modified in order to be transmitted over a longer distance.

Some key points about modulation include:

- Modulation allows analog signals to be transmitted over long distances without degradation.

- There are several types of modulation, including amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM).

- In AM, the amplitude of the signal is varied in order to carry information.

- In FM, the frequency of the signal is varied in order to carry information.

- In PM, the phase of the signal is varied in order to carry information.

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A modulation is a voltage, frequency, pulse, or phase change in an analog transmission.

Modulation is the process of changing a signal's characteristics to encode information for transmission. In analog transmissions, the signal is continuous and varies in amplitude, frequency, or phase.

Modulation techniques include, amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM), among others. These techniques are used in radio, television, and telephone systems, among others.

The modulation process converts the analog signal into a format that can be transmitted over a channel, such as a wire or radio frequency, and then demodulated at the receiving end to recover the original signal.

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Answer:

60 - 45 = A. 15

Explanation:

Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

A flat or highly polished surface called a plane mirror reflects light or waves to create an image. It is a polished, smooth surface that creates a virtual representation of the actual object.

A plane mirror is a surface on which an image can only be produced by at least two light beams. The intersection of these two beams can occur inside the mirror or appear to occur somewhere behind the mirror.

The image that follows illustrates how an object appears when viewed via a plane mirror.

Therefore, 60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

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The range of the shots(projectiles) will be around 131.65 meters when the point of the cannon is set to 20 degrees above level. 

To decide the run of the shots, we have to calculate the horizontal distance that the shots will travel.

Ready to utilize the taking after kinematic condition to fathom for the run:

\(R = (v^2/g) * sin(2θ)\)

Where:

R = run

v = starting speed (25 m/s)

g = increasing speed due to gravity (9.81 m/s²)

θ = point of the cannon (20 degrees)

Substituting the given values into the condition, we get:

\(R = (25^2/9.81) * sin(2*20)\)

R = 131.65 meters

In this manner, the run of the shots will be around 131.65 meters. 

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Copper plating is the process of plating a layer of copper electrolytically on the surface of an item.

Copper plating is the process of depositing a copper layer onto various metals for functional and decorative purposes.

Copper plating is the process of plating a layer of copper electrolytically on the surface of an item.

It takes place in an electrolytic cell where electrolysis which uses direct electric current to dissolve a copper rod and transport the copper ions to the item.

The process of cooper plating is:

This forms a thin, solid, metallic copper film on the surface of the item.

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The correct answer is 378000 km.

The speed of light is the rate at which light waves move through distinct substances. In instance, it has now been established that the speed of light in a vacuum is 299,792,458 metres per second.

Using the equation

distance = speed × time,

the total distance travelled is calculated.

Consequently, the overall distance travelled is

Distance = ( 3.00 × 10^8 m/s ) ( 2.52 )

= 756000000 m

The total distance travelled divided by two determines the distance between the Earth and the Moon.

Distance between earth to moon = 756000000/2

= 378000000 meters

= 378000 km.

Approximately 384 thousand kilometres separate the Earth and the Moon.

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The height of the image is approximately 1.066 cm, and since it is negative, it means that the image is inverted and smaller than the object.

Using the thin lens equation:

1/f = 1/d_o + 1/d_i

where f is the focal length of the lens, d_o is the object distance, and d_i is the image distance.

Plugging in the given values, we get:

1/4 = 1/16 + 1/d_i

Solving for d_i, we get:

d_i = 3.2 cm

Using the magnification equation:

m = -d_i/d_o

where m is the magnification of the image.

Plugging in the given values, we get:

m = -3.2/16 = -0.2

Since the magnification is negative, the image is inverted.

Finally, using the equation:

m = h_i/h_o

where h_i is the height of the image, and h_o is the height of the object.

Plugging in the given values and solving for h_i, we get:

h_i = m * h_o = (-0.2) * 5.33 cm = -1.066 cm

Therefore, the height of the image is approximately 1.066 cm, and since it is negative, it means that the image is inverted and smaller than the object.

What is magnification of lens?

The magnification of a lens is a measure of how much larger or smaller an image appears relative to the object that is being viewed through the lens. It is the ratio of the height of the image formed by the lens to the height of the object.

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An electric current of approximately 0.74 A is required to generate the necessary magnetic field to demagnetize the iron bar when inserted within a cylindrical wire coil 0.16 m long and has 150 turns.

To demagnetize the iron bar, a magnetic field with a strength greater than the coercivity of the magnet must be applied in the opposite direction to the magnet's magnetization.

The magnetic field required to demagnetize the iron bar is given by the formula:

\(\begin{equation}H = \frac{2 \pi n I}{l}\end{equation}\)

where H is the magnetic field strength, n is the number of turns in the coil, I is the electric current flowing through the coil, and l is the length of the coil.

To calculate the electric current required, we can rearrange the formula as:

\(\begin{equation}I = \frac{Hl}{2\pi n}\end{equation}\)

Substituting the given values, we have:

H = 4380 A/m (coercivity of the magnet)

l = 0.16 m (length of the coil)

n = 150 (number of turns in the coil)

\(\begin{equation}I = \frac{4380 \text{ A/m} \cdot 0.16 \text{ m}}{2\pi \cdot 150}\end{equation}\)

I ≈ 0.74 A

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The mass of the seashell suspended by the two strands of spider silk is 0.28 kg.

The given parameters:

The mass of the seashell at equilibrium is calculated by applying Newton's second law of motion;

\(\Sigma F = 0\\\\T_1 sin(\theta) + T_2 sin(\theta) - W = 0\)

where;

The weight of the seashell is calculated as;

\(1.42 \times sin(75) \ + \ 1.42 \times sin(75) \ - W = 0\\\\2.743 - W = 0\\\\W = 2.743 \ N\)

The mass of the seashell is calculated as follows;

\(W = mg\\\\m = \frac{W}{g} \\\\m = \frac{2.743}{9.8} \\\\m = 0.28 \ kg\)

Thus, the mass of the seashell suspended by the two strands of spider silk is 0.28 kg.

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Answer:

salt

Explanation:

it comes from sea water

Answer:

Salt

Explanation:

It’s not cinnamon ( I know because if the picture)

it’s not sugar (sugar is sweet not sour)

IT MIGHT BE SALT (it’s salt)

its nit diamond (diamond doesn’t have a taste?)

The kinetic energy of the electron is the difference between its final energy and its potential energy is  -9.312 x \(10^{-19\) J.

\(E_1\) = (h²/8mL²)

where h is Planck's constant, m is the mass of the electron, and L is the width of the well. Substituting the given values, we get:

\(E_1\) = (h²/8mL²) = (6.626 x \(10^{-34\) J s)²/(8 x 9.109 x \(10^{-31\)kg x (4.00 x \(10^{-10\) m)²) = 2.364 x \(10^{-19\) J

The depth of the well is six times this energy, so the potential energy of the electron in the well is:

V = 6\(E_1\) = 6 x 2.364 x \(10^{-19\) J = 1.4184 x \(10^{-18\) J

E = hc/λ

where h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon. Substituting the given values, we get:

E = (6.626 x \(10^{-34\) J s)(2.998 x \(10^8\) m/s)/(79 x \(10^-9\) m) = 2.508 x \(10^{-19\) J

The final energy of the electron is the sum of its initial energy and the energy of the absorbed photon:

\(E_final\) = \(E_1\) + E = 2.364 x \(10^{-19\) J + 2.508 x \(10^{-19\) J = 4.872 x \(10^{-19\)J

The kinetic energy of the electron is the difference between its final energy and its potential energy:

K = \(E_final\) - V = 4.872 x \(10^{-19\) J - 1.4184 x \(10^{-18\) J = -9.312 x \(10^{-19\) J

Kinetic energy is a form of energy that an object possesses due to its motion. Any object that is in motion has kinetic energy, which is dependent on its mass and velocity. The formula for kinetic energy is KE = 1/2 * m * v², where m is the mass of the object and v is its velocity. This formula shows that as the mass or velocity of an object increases, so does its kinetic energy.

Kinetic energy is a scalar quantity, which means it has magnitude but not direction. It is measured in joules (J) in the SI unit system. The concept of kinetic energy is important in many areas of physics, including mechanics and thermodynamics. The practical applications of kinetic energy are numerous, ranging from sports to transportation.

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Explanation:

The relationship among u, v, and f in the context of a lens can be described by the lens formula:

1/v - 1/u = 1/f

where:

- u is the object distance (distance between the object and the optical center of the lens),

- v is the image distance (distance between the image and the optical center of the lens), and

- f is the focal length of the lens.

According to the lens formula, the reciprocal of the image distance subtracted from the reciprocal of the object distance is equal to the reciprocal of the focal length.

A diverging lens has a focal length that has a magnitude of 33.0 cm. an object is placed 21.0 cm in front of this lens. The magnification will be  -12.833 cm

diverging lens = concave lens

focal length = - 33 cm

u = - 21 cm

magnification = image distance / object distance

using lens formula

1/v - 1/u = 1/f

1/v = 1/f + 1/u

    = 1/-33 -1/21

v   = -12.833 cm

A diverging lens has a focal length that has a magnitude of 33.0 cm. an object is placed 21.0 cm in front of this lens. The magnification will be  -12.833 cm

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Global Positioning System (GPS) is a satellite-based tracking system that enables users to determine a person's position.

This system is used to locate and track the movements of individuals, vehicles, and assets around the world. GPS technology works by utilizing a network of satellites orbiting the Earth that send signals to GPS receivers on the ground. These receivers interpret the signals and calculate the user's precise location, speed, and direction.

GPS technology has a wide range of applications, including navigation, tracking, and mapping. GPS tracking is particularly useful in fleet management, logistics, and emergency response situations. Law enforcement agencies also use GPS technology to monitor the movements of individuals who are under surveillance or subject to electronic monitoring.

GPS technology has revolutionized the way people navigate and interact with the world around them. It has made it easier for individuals to find their way around unfamiliar places and has improved the efficiency and safety of many industries. The widespread availability of GPS technology has also led to the development of new applications and services that make use of location data, such as geotagging and location-based advertising. Overall, GPS technology has had a significant impact on society and will continue to play an important role in shaping the future.

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Among the successive ionization reactions of phosphoric acid (H₃PO₄), the equilibrium reaction that will have the largest Ka value is the first ionization reaction.

The first ionization of phosphoric acid can be represented by the equation:

H₃PO₄ + H₂O ⇌ H₃O⁺ + H₂PO₄⁻

In this reaction, one hydrogen ion (H⁺) is released, forming the hydronium ion (H₃O⁺) and the hydrogen phosphate ion (H₂PO₄⁻). The Ka value represents the acid dissociation constant, which indicates the extent of ionization of an acid in water. A higher Ka value indicates a greater degree of acid strength.

In the case of phosphoric acid, the first ionization reaction has the largest Ka value because it is the initial and most significant ionization step.

As the subsequent ionization reactions proceed, the remaining hydrogen atoms become increasingly difficult to remove due to the decreasing strength of the acid.

Therefore, the first ionization reaction of phosphoric acid has the highest Ka value among its successive ionization reactions.

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Answer:

Newton's third law explains the generation of thrust by a rocket engine. In a rocket engine, hot exhaust gas is produced through the combustion of a fuel with an oxidizer. The hot exhaust gas flows through the rocket nozzle and is accelerated to the rear of the rocket. In re-action, a thrusting force is produced on the engine mount.

Explanation:

pa brainliest po :D

Answer: (D) an egg colliding with a brick wall is not the best example of an elastic collision.

An elastic collision is defined as a collision in which both kinetic energy and momentum are conserved. Kinetic energy is transferred from one object to another during a collision in which they both collide. The energy lost in a collision is known as inelastic energy.

The best example of an elastic collision is:

A) a collision between two billiard balls and

C) a basketball bouncing off the floor.

A collision between two billiard balls A collision between two billiard balls is the best example of an elastic collision. When two billiard balls collide, kinetic energy is transferred from one ball to the other. However, because the billiard balls are made of elastic materials, the energy is not lost during the collision. As a result, both the momentum and the kinetic energy of the billiard balls remain unchanged after the collision.A basketball bouncing off the floorWhen a basketball bounces off the floor, it is also an example of an elastic collision. When the basketball hits the floor, kinetic energy is transferred from the basketball to the floor.

However, because the basketball is made of an elastic material, the energy is not lost. As a result, the basketball bounces back up off the floor with the same kinetic energy that it had before it hit the floor.

Therefore, a basketball bouncing off the floor is also an example of an elastic collision. An egg colliding with a brick wall is an example of an inelastic collision. In an inelastic collision, some of the kinetic energy is lost during the collision. As a result, both the momentum and the kinetic energy of the objects are not conserved.

Therefore, D) an egg colliding with a brick wall is not the best example of an elastic collision.

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Answer:

I believe it is D.

Explanation:

I say this because it is position vs. seconds and it makes the most sense based on the markings. Sorry if I am wrong, hope it is right!  

Answer: D. 40/15 = 2.67m/s

Explanation:

I hope it is correct

If the person inserted a nail with a hammer instead of the screw with the screwdriver, the force applied would be greater, but the distance would be shorter. The correct option is A.

The action of push or pull in order to make a body change its state of motion or rest is called Force.

As the force is pressure per unit area. Force is inversely proportional to the area over which force is to applied.

The hammer would take more force to insert the nail. The screw has its helix which is to be inserted and application of force is small.

Thus, the force applied would be greater, but the distance would be shorter.  The correct option is A.

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t if the person inserted a nail with a hammer instead of the screw with the screwdriver?

Answer:

Isotope are atoms of the same element that have the same atomic number but different in mass number.

\(\huge\bigstar{\underline{{\red{A}{\pink{n}{\color{blue}{s}{\color{gold}{w}{\color{aqua}{e}{\color{lime}{r}}}}}}}}}\huge\bigstar\)

Archimedes’ principle is the physical law of buoyancy, discovered by the ancient Greek mathematician and inventor Archimedes, stating that any body completely or partially submerged in a fluid (gas or liquid) at rest is acted upon by an upward, or buoyant, force, the magnitude of which is equal to the weight of the fluid displaced by the body. The volume of displaced fluid is equivalent to the volume of an object fully immersed in a fluid or to that fraction of the volume below the surface for an object partially submerged in a liquid. The weight of the displaced portion of the fluid is equivalent to the magnitude of the buoyant force. The buoyant force on a body floating in a liquid or gas is also equivalent in magnitude to the weight of the floating object and is opposite in direction; the object neither rises nor sinks. For example, a ship that is launched sinks into the ocean until the weight of the water it displaces is just equal to its own weight. As the ship is loaded, it sinks deeper, displacing more water, and so the magnitude of the buoyant force continuously matches the weight of the ship and its cargo.

Answer:

Archimedes principle states that"When a body is fully or partially immersed in a liquid,it experience an upthrust which is equal to the weight of the liquid displaced"

Answer:bowling ball has greater kinetic energy

Explanation:

Kinetic energy of bowling ball:

mass=m=5kg

Velocity=v=6m/s

Kinetic energy =ke

Ke=0.5 x m x v x v

Ke=0.5 x 5 x 6 x 6

Ke=90J

Kinetic energy of ship:

mass=m=120000kg

velocity=v=0.02m/s

Ke=0.5 x m x v x v

Ke=0.5 x 120000 x 0.02 x 0.02

Ke=24J

The bowling ball has greater kinetic energy than the ship.

The kinetic energy of an object is the work an object can do by its motion. Kinetic energy is a scalar quantity as it does have magnitude only.

When work is done, energy is transferred, and the object moves at a new speed. The energy is transferred kinetic energy, which depends on the mass and speed.

The SI unit of kinetic energy is Joule and the CGS unit of kinetic energy is erg. The expression of kinetic energy that is used to calculate it is:

K.E. = (1/2) mv²

The mass and the velocity of the bowling ball are 5 Kg and 6 m/s respectively.

The kinetic energy of the bowling ball = (1/2) × 5× (6)² = 90 J

The mass and the velocity of the ship are 120000 Kg and 0.02 m/s respectively.

The kinetic energy of the bowling ball = (1/2) × 120000× (0.02)² = 24 J

Therefore, the kinetic energy of the bowling ball is greater than the ship.

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The method or formula that will be used to determine the specific heat capacity of the metal is c = Q / mΔθ.

The specific heat capacity of a material is the amount of heat required to raise a unit mass of the substance by 1 Kelvin.

Mathematically, the formula for specific heat capacity of a material is given as;

Q = mcΔθ

where;

c = Q / mΔθ

Thus, the method or formula that will be used to determine the specific heat capacity of a material is by dividing the heat capacity with the product of mass of the material and change in temperature.

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