How much energy can be stored in a spring with k = 470 N/m if the maximum possible stretch is 20 cm?

The average force exerted by the rain on the roof of the car is approximately 0.99N.

To calculate the average force  wielded by rain on the auto's roof, we may use the force formula, F =  ma, where F is the force, m is the mass, and an is the acceleration. In this  script, the mass of rain falling on the auto's roof each second is0.060 kg/s.

Assuming that the rain comes to a stop when it hits the  machine, we may assume that the rain's acceleration is equal to its  haste, which is-15 m/s.   Using the data  handed, we can  cipher the force  wielded by rain on the auto's roof as follows

F = ma

F = 0.060 kg/s × (-15 m/s)

F = -0.9 N

Therefore, the average force exerted by the rain on the roof of the car is 0.9 N.

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Answer:

51m/s - 13m/s= 38m/s

38m/s÷45m/s²= 0/8

Explanation:

First we bring the difference in speeds to religion because this is the formula

Secondary speed - primary speed ÷ time

\( \frac{51 - 13} {45} =0.8\)

Because we do not have a definite time, according to the division formula, we accelerate to get the time

When the coefficient of kinetic friction is increasing means, the mass of the object is also increasing, so the normal force acting between the contact surfaces will also increase, ultimately increasing the friction.

The ratio obtained by dividing the force required to keep an object moving by the force keeping two sliding surfaces together is known as the coefficient of kinetic friction. The materials used to create the contacting surfaces are particular to this coefficient. The coefficient will be higher on a rougher surface. The ratio of both the friction force to the normal force felt by a body moving on a dry, uneven surface is known as the kinetic friction coefficient or μk.

The force preventing sliding against one another of solid surfaces, fluid layers, and material components is known as friction. There are various kinds of friction, two solid surfaces in touch are opposed to one another's relative lateral motion by dry friction.

Hence, when the coefficient of kinetic friction is increasing means, the mass of the object is also increasing, so the normal force acting between the contact surfaces will also increase, ultimately increasing the friction.

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The circuit's overall resistance, measured in ohms, is 9.23A. when a 12.0 v battery is linked in parallel with four resistors that have resistance values of 3.40 ohms, 6.54 ohms, 8.32 ohms, and 1.34 ohms.

You add up the individual resistances to determine the total overall resistance of several resistors connected in this manner. The formula used for this is as follows: Rtotal = R1 + R2 + R3, and so forth. Example: For these three resistors connected in series, determine the total resistance.

The sum of each component resistance in a series circuit represents the circuit's overall resistance.

Req = 1.3ohms

Current = V / R

I = 9.23A

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Answer:

gburhgjn

Explanation:

hrbvufv

To write the Disjunctive Normal Form (DNF) of the given Boolean formula ~((p ∧ ¬q) ∨ r) - ~p, we can first construct the truth table for the formula:

p | q | r | ~((p ∧ q) ∨ r) ∧ ~p

p q r ~((p ∧ ¬q) ∨ r) - ~p

0 0 0 1

0 0 1 0

0 1 0 0

0 1 1 1

1 0 0 1

1 0 1 1

1 1 0 1

1 1 1 1

Now, we can observe the rows where the formula evaluates to true (1) and construct the DNF by ORing the conjunctions of the corresponding variables:

DNF = (¬p ∧ ¬q ∧ ¬r) ∨ (¬p ∧ ¬q ∧ r) ∨ (p ∧ ¬q ∧ ¬r) ∨ (p ∧ q ∧ ¬r) ∨ (p ∧ q ∧ r)

Therefore, the DNF of the Boolean formula ~((p ∧ ¬q) ∨ r) - ~p is (¬p ∧ ¬q ∧ ¬r) ∨ (¬p ∧ ¬q ∧ r) ∨ (p ∧ ¬q ∧ ¬r) ∨ (p ∧ q ∧ ¬r) ∨ (p ∧ q ∧ r).

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It's important to know that nuclear fusion consists of two nuclei with low mass numbers combining to form a single nucleus with higher mass numbers. On the other hand, nuclear fission is about the opposite phenomena because the atom splits, releasing a great amount of energy.

The claim can be Cosmetics, hygiene, and cleaning product emissions may be dangerous.

Evidence 1: Effect of Air Quality

Volatile organic compounds (VOCs), including formaldehyde, benzene, and toluene, can be found in a variety of cosmetic, hygiene, and cleaning goods. These VOCs have the potential to evaportate and cause indoor air pollution.

Environmental impact is evidence number two

Cosmetics, hygiene, and cleaning goods can have a detrimental environmental impact during manufacturing, usage, and disposal. Microplastics and certain chemicals are among the substances present in these items that may find their way into rivers and endanger aquatic life.

Evidence 3: Worker health effects

Occupational health risks can be present for workers who manufacture and produce hygiene, cleaning, and cosmetic items.

Reasoning: It is clear from the research that emissions from cosmetic, hygiene, and cleaning goods have the potential to be harmful.

Thus, this way, harmful are the emissions from cosmetics, hygiene, and cleaning products.

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31H→32He+ - This is a beta decay reaction ;  23290Th→22888Ra+?.- This is an alpha decay reaction ; The nuclear reaction shown below, 22490Th → 22088Rn + 42He, is also an alpha decay reaction ; alpha decay of uranium-236 (atomic number 92, mass number 236) results in the emission of alpha particle and formation of a new nucleus.

Decay reaction 31H→32He+ - This is a beta decay reaction, which means that a neutron in the nucleus of the hydrogen atom (with atomic number 1) is converted into a proton, an electron, and a neutrino. The proton stays in the nucleus, while the electron and neutrino are ejected. The resulting nucleus has atomic number 2 (helium) and mass number 32, which means it has two protons and 30 neutrons.

23290Th→22888Ra+?. This is an alpha decay reaction, which means that the nucleus of thorium (atomic number 90) emits an alpha particle, which is a helium nucleus with two protons and two neutrons. The resulting nucleus has atomic number 88 (radium) and mass number 228, which means it has 88 protons and 140 neutrons.

The nuclear reaction shown below, 22490Th → 22088Rn + 42He, is also an alpha decay reaction. The nucleus of thorium (atomic number 90) emits an alpha particle, which is a helium nucleus with two protons and two neutrons. The resulting nucleus has atomic number 88 (radon) and mass number 220, which means it has 88 protons and 132 neutrons.

The alpha decay of uranium-236 (atomic number 92, mass number 236) results in the emission of an alpha particle (helium nucleus) and the formation of a new nucleus. The new nucleus has atomic number 90 (thorium) and mass number 232, which means it has 90 protons and 142 neutrons.

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Answer:

C

Explanation:

Waiting after pouring boiling water into a beaker before reading the thermometer ensures thermal equilibrium, allows for heat transfer and temperature uniformity within the water, accounts for temperature lag in the thermometer, and promotes safety by reducing the risk of burns

It is important to wait for a while after boiling water is poured in a beaker before reading the thermometer due to several reasons:

Thermal Equilibrium: When boiling water is poured into a beaker, the water is at its boiling point, which is typically 100 degrees Celsius at sea level. However, the beaker and the surrounding environment may be at a lower temperature. In order to obtain an accurate measurement of the water's temperature, it is necessary to wait for the water to reach thermal equilibrium with the surroundings. This ensures that the thermometer reading reflects the actual temperature of the water.

Heat Transfer: The process of transferring heat takes time. Even though the water is boiling, the temperature may not be evenly distributed throughout the liquid. The outer layers of the water may be closer to the boiling point, while the inner layers may be slightly cooler. Waiting allows for the heat to distribute more evenly, reducing temperature variations within the water and providing a more accurate measurement.

Temperature Lag: Thermometers, especially those made of glass, can have a temperature lag. This means that it takes some time for the thermometer to adjust to the temperature of the substance it is measuring. By waiting for a while, the thermometer can catch up to the actual temperature of the water, providing a more reliable reading.

Safety Precautions: Boiling water is at a high temperature and can cause burns or scalding. Waiting for a while before reading the thermometer allows the water to cool slightly, reducing the risk of accidental contact with hot water and minimizing the potential for injury.

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answer:

true

explanation:

Answer:

True!

Explanation:

cadmium is being used during controlled reaction which creates the energy!

I took this test! :3

Answer:

Vf = 31 m/s

Explanation:

Have to use the Final Velocity Formula - Vf = Vi + a * t

Vf = Final Velocity

Vi = Initial Velocity

a = acceleration

t = time

* = multiply

Vf = 25 + 1.5 * 4

Vf = 25 + 6

Vf = 31 m/s

The final velocity of the car is 31 m/s.

The correct order of heat transfer in sealed cans is as follows: conduction, convection, and radiation.

Conduction is the transfer of heat through direct contact between objects or materials. In the case of sealed cans, heat is transferred from the outside to the contents or vice versa through the walls of the can via conduction.

Convection is the transfer of heat through the movement of a fluid, either liquid or gas. Although sealed cans do not allow for direct fluid motion inside, there can be some convective heat transfer occurring within the contents of the can due to natural convection. This is especially relevant when the can's contents are heated, causing the fluid to circulate within the can.

Radiation is the transfer of heat through electromagnetic waves. While radiation can occur in all directions, it is generally less significant in sealed cans compared to conduction and convection. The walls of the can and the contents can emit and absorb thermal radiation, but the effect is typically smaller compared to the other modes of heat transfer.

Overall, the predominant modes of heat transfer in sealed cans are conduction followed by convection, with radiation playing a lesser role.

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Answer:

You would have to give better explanation on subject.

Explanation:

Light is radiant energy in the form of a wave of electromagnetic energy.

Light is a form of electromagnetic radiation that is visible to the human eye. It is made up of a stream of energy particles, called photons, that travel in a wave-like pattern. It has various properties, including intensity, color, and direction, which can be used to explain its behavior. It can be described as having both a particle-like nature and a wave-like nature. The particle-like nature of light is exhibited in the way it travels in packets of energy, known as photons. The wave-like nature of light is demonstrated by the way it can be bent, diffracted, and refracted.
The intensity of light is determined by the amount of energy that a photon has. The color of light is determined by the wavelength of the light, with different colors having different wavelengths. Direction is also an important property of light, as it determines how light will be bent when it passes through an obstacle or is reflected off of a surface.
Light plays a critical role in the lives of humans and other organisms. It is used in vision, to help organisms understand the world around them. Light also has numerous applications in science and technology, such as in communications, photography, and solar energy.
In conclusion, light is a form of electromagnetic radiation composed of photons that travel in a wave-like pattern. It has various properties, including intensity, color, and direction, that are used to explain its behavior. Light is important for vision and has various uses in science and technology.

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The gravitational force from the sun controls the orbit of the moon and the planet besides gravity.

Anything in the universe if has mass, then it is tends to have some gravitational interaction with other objects having some mass.

The moon and the planet interact with each other due to the gravity of the planet. Beside this gravity, one more force that is responsible is the gravitational force due to the sun.

The gravitational force of the sun makes the earth rotate around the sun, and it indeed result in the rotation of the moon around the planet.

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\( \boxed{ \mathrm{Kinetic \: Energy = \frac{1}{2} m {v}^{2} }}\)

_____________________________

\(\mathrm{ \#TeeNForeveR}\)

a) y(t) = te⁻³ᵗ is a possible position function.

b) General equation: y(t) = C₁e^(-2t) + C₂e^(-3t) + t(e^(-3t))(At + B).

c) Exact motion equation: y(t) = (23/5)e^(-2t) - (8/5)e^(-3t) + t(e^(-3t))(At + B), with initial conditions y(0) = 3 and v(0) = -7.

a) To show that y(t) = te⁻³ᵗ is a possible position function, we substitute it into the differential equation:

y(t) = te⁻³ᵗ

y'(t) = e⁻³ᵗ - 3te⁻³ᵗ

y''(t) = -6e⁻³ᵗ + 9te⁻³ᵗ

Substituting these expressions into the differential equation, we have:

-6e⁻³ᵗ + 9te⁻³ᵗ + 7(e⁻³ᵗ - 3te⁻³ᵗ) + 6(te⁻³ᵗ) = -6te⁻³ᵗ - e³ᵗ

Simplifying this equation, we find that both sides are equal, thus confirming that y(t) = te⁻³ᵗ is a possible position function.

b) The general equation for all possible position functions can be written as:

y(t) = C₁e^(-2t) + C₂e^(-3t) + t(e^(-3t))(At + B)

c) Given the initial conditions y(0) = 3 and y'(0) = v(0) = -7, we substitute these values into the general equation and solve for the constants:

3 = C₁ + C₂

-7 = -2C₁ - 3C₂

Solving these equations, we find C₁ = 23/5 and C₂ = -8/5.

The exact motion equation for the weight is:

y(t) = (23/5)e⁻²ᵗ - (8/5)e⁻³ᵗ + t(e⁻³ᵗ)(At + B)

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Suppose a weight of 1 kg is attached to an oscillating spring with friction constant b = 7 and stiffness constant k = 6. Suppose the external forces on the weight are: Fₑₓₜ(t) = - 6te⁻³ᵗ - e³ᵗ

y" + 7y' + 6y = - 6te⁻³ᵗ - e³ᵗ

a) Show y(t) = te⁻³ᵗ is a possible position function for this weight.

b) Find a general equation for all possible position functions.

c) Find the exact motion equation for this weight if its initial position is y(0) = 3, and its initial velocity is v(0) = y'(0) = -7.

Tom must accelerate at a constant rate of 0.25 m/s2 in order to finish the race in a dead heat with Joe.

Accelerate is an action or process of speeding up or increasing in rate or amount. It is commonly used to describe an increase in the rate of change of velocity, or the rate of change of a variable such as time, speed, or distance. Acceleration can be generated by a variety of forces and factors, such as gravity, electrical current, centrifugal force, friction, and aerodynamic drag.

Tom must have a constant acceleration of 0.25 m/s2 in order to finish the race in a dead heat with Joe. This can be calculated using the equation for average velocity, vavg = (v1 + v2)/2, where v1 is Joe's velocity and v2 is Tom's velocity. If Joe and Tom both have the same final velocity, then their average velocity must be equal.
50 m / 10 m/s + 51 m / (9.75 m/s + a) = (10 m/s + a)
Solving for a, we get a = 0.25 m/s2. Therefore, Tom must accelerate at a constant rate of 0.25 m/s2 in order to finish the race in a dead heat with Joe.

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Answer:

lightning conductors/rods protect buildings by intercepting lightning strikes that may hit these structures.

Air conditioners pass air over cold coils known as evaporator pipes

Explanation:

Lightning rods are made of highly conductive metal, and offer a path of least resistance for any lightning strikes and are connected to longer wires that ground the charge.

air conditioners use a chemical compound called a refrigerant. the most common refrigerant used is r-134a also know as 1,1,1,2-Tetrafluoroethane.  cooling systems use the low boiling points of these refrigerants to constantly cool and compress the chemical to continually move heat from the inside of the system to an external area.

The  slope of the hill on which the skier is accelerating is 24⁰.

The given parameters;

The acceleration  of the skier is calculated as follows;

\(a = \frac{v}{t} \\\\a = \frac{12}{3} = 4 \ ms^2\)

The net force on the skier is calculated as;

\(mgsin\theta - \mu_kF_n = ma\\\\mgsin\theta- 0 = ma\\\\gsin\theta = a\\\\sin\theta = \frac{a}{g} \\\\\theta = sin^{-1} (\frac{a}{g} )\\\\\theta = sin^{-1} (\frac{4}{9.8} )\\\\\theta = 24 \ ^0\)

Thus, the  slope of the hill on which the skier is accelerating is 24⁰.

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Answer:

6.78 m/s

Explanation:

We can use the law of conservation of momentum to solve this problem. According to this law, the total momentum of a system is conserved in the absence of external forces. In this case, the system consists of the truck and the parked car.

Before the collision, the momentum of the truck is given by:

p1 = m1 * v1 = 130 kg * 12 m/s = 1560 kg*m/s

The momentum of the parked car is zero since it is not moving.

The total momentum of the system before the collision is therefore:

p1_total = p1 + p2 = 1560 kg*m/s

After the collision, the two objects stick together and move with a common velocity, which we will call v_final. The total mass of the system is:

m_total = m1 + m2 = 130 kg + 100 kg = 230 kg

The total momentum of the system after the collision is:

p2_total = m_total * v_final

According to the law of conservation of momentum, p1_total = p2_total. Therefore:

1560 kg*m/s = 230 kg * v_final

Solving for v_final, we get:

v_final = 1560 kg*m/s / 230 kg = 6.78 m/s

Therefore, the final velocity of the two objects after the collision is 6.78 m/s.

Explanation:

m1 of the truck: 130 kg

m2 of the car: 100 kg

v1 of the truck: 12 m/s

vf?

use the formula:

(m1×v1) + (m2×v2) = (m1+m2)vf

so

\(vf = \frac{(m1 \times v1) + (m2 \times v2)}{(m1 + m2)} \)

\(vf = \frac{(130 \times 12) + (100 \times 0)}{(130 + 100)} \)

vf = 1560 ÷ 230 = 6,7 m/s

Answer:

Its C

Thank me later

Now bye

Answer:

The answer is 34.67 kilograms force

Answer:

its electrons

Explanation:

only electrons stays outside the nucleus unlike protons and neutrons and it has little to no mass

Answer:

The slope of a line is the steepness of the line. There are many ways to think about slope. Slope is the rise over the run, the change in 'y' over the change in 'x', or the gradient of a line. Check out this tutorial to learn about slope!

Explanation:

go to link it will help

What Does the Slope of a Line Mean? | Virtual Nerd