PLS HELP MEH!!!!


Sound travels fastest in

a) air
b) water
c) glass
d) diamond

WILL MARK BRAINLIEST IF ANSWER

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Answer:

net force= 2000-1000=1000

a=v-u/t=5/20=1/4

m=?

m=f/a

=1000÷1/4=4000kg

The charging rate of a capacitor depends on the product of the capacitance and resistance in the circuit. The first circuit has a product of 0.01 seconds (10k ohms x 1 mf) while the second circuit has a product of 10 seconds (1k ohms x 10 mf), indicating that the second circuit will have a slower charging rate.

The statement is true. In both cases, the time constant (τ) for the RC circuit, which determines the charging rate, is calculated as the product of the resistor value (R) and the capacitor value (C). In both examples:

1. For the 1 µF capacitor with a 10kΩ series resistor: τ = R × C = 10,000 Ω × 1 × 10⁻⁶ F = 0.01 seconds
2. For the 10 µF capacitor with a 1kΩ series resistor: τ = R × C = 1,000 Ω × 10 × 10⁻⁶ F = 0.01 seconds
As the time constants are equal, the charging rates for both combinations are the same.

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San Andreas Fault--Normal Fault is associated correctly.

This is option 1.

San Andreas Fault is a right-lateral strike-slip fault that runs approximately 800 miles (1,300 km) through California in the western United States. It forms the boundary between the Pacific Plate and the North American Plate, extending from the San Francisco Bay Area to the Salton Sea near the Mexico–United States border. It is one of the most significant geological features on the planet, and it is also one of the most active, with frequent earthquakes of varying sizes being reported in the region.

A normal fault is a type of fault that occurs when the rocks in the Earth's crust are pulled apart by tension. A normal fault occurs when the block of rock above the fault line falls downwards relative to the block of rock below the fault line, which is raised upwards.

So, the correct answer is option 1

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Answer: Gas

Explanation:

the particles in a gas aren’t close together and they move freely. Like the air. can I have Brainliest plz.

Answer:

It is a circuit that is easily damaged

The power required to do 180 J of work in 2.4 s is 75 W.

Power can be defined as the rate at which work is done.

To calculate the power, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the power required to do 180 J of work in 2.4 s is 75 W.

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Answer:

v = -\frac{n \ m}{M} \ v'

for the man to return to the ship he must throw the balls in the opposite direction of the ship

Explanation:

For this exercise we can use the conservation of momentum. Let's form a system made up of man and baseballs.

Initial instant. Before throwing the balls

     p₀ = 0

Final moment. After throwing the balls

     \(p_{f}\) = M v + n m v '

where M is the mass of the man, m is the mass of each ball and n is the number of balls , v isthe speed man and v' is the speed ball

Since the forces are internal, the momentum of the system is conserved

     p₀ = p_{f}

      0 = M v + n m v ’

      \(v =- \frac{n \ m}{M} \ v'\)

If we analyze this expression, for the man to return to the ship he must throw the balls in the opposite direction of the ship

Energy for this electronic transition is ΔE=0.572eV frequency is ν=1.38×\(10^{14}\) \(s^{-1}\) and wavelength is 2.17×\(10^{-6}\) m

The Bohr Model for the energy of an electron in a hydrogen atom gives us:

E=−\(\frac{13.6}{n^{2} }\) eV

Where n is the principle quantum no

For the transition 7→4 the difference in energy is given by:

ΔE= -\(\frac{13.6}{49}\)+\(\frac{13.6}{16}\) eV

ΔE=0.85-0.277

ΔE=0.572eV

To convert this to Joules we multiply by the electronic charge:

ΔE=0.572×1.6×\(10^{-19}\)=9.16×\(10^{-20}\)J

(b)

To find the frequency of the emitted photon we use the Planck expression:

ΔE=hν

∴ν=ΔE/h=(9.16×\(10^{-20}\))÷(6.626×\(10^{-34}\))\(s^{-1}\)

ν=1.38×\(10^{14}\) \(s^{-1}\)

To find the wavelength

λ=c/ν

(3×\(10^{8}\))/(1.38×\(10^{14}\)) m

=2.17×\(10^{-6}\) m

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Explanation:

Appreciation for your work.

Good relationships with colleagues.

Good work-life balance.

Good relationships with superiors.

Company's financial stability.

Learning and career development.

Job security.

Attractive fixed salary.

Answer:

Charge quantization is the principle that the charge of any object is an integer multiple of the elementary charge.

Explanation:

The correct option is (c) conservation of energy. The physical law underlying the first law of thermodynamics is Conservation of Energy.

Energy conservation is the fundamental principle of the first law of thermodynamics, which states that energy cannot be created or destroyed. In a closed system, it can only be converted from one form to another or transferred from one location to another. In a thermodynamic system, the first law of thermodynamics establishes the basic principle of energy conservation and is commonly known as the law of energy conservation.

Therefore, The correct option is (c) conservation of energy.

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When the molecules of carbon dioxide is heated, it is disintegrated into molecules of carbon monoxide and oxygen atoms.

CO2 → CO + O

This is the basic reaction expected to happen by carbon dioxide molecules are heated. However it may also disintegrate into C2, O2, C, etc.

Since heat is absorbed in this reaction, it is an example of endothermic reaction. In an exothermic reaction heat is released. These are the basic two types of chemical reactions on basis of heat.

Therefore, when the molecules of carbon dioxide is heated, it is disintegrated into molecules of carbon monoxide and oxygen atoms.

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The squid has 1.85 kg of water in its cavity, at speed 2.70 m/s it expel this water to instantaneously achieve a speed of 2.70 m/s to escape the predator

Given, Mass of water in the cavity of squid = 1.85 kg
Speed of squid = 2.7 m/s

In order to escape from the predator, the squid expels water from its cavity. The mass of the squid-water system is conserved when the water is expelled.

The mass is given as: Mass = m1 + m2where,m1 = mass of squidm2 = mass of water in cavity of squid

The velocity of the squid-water system before the water is expelled is zero and after the water is expelled, it becomes v.

Let the velocity of the water expelled from the cavity be v2. By the conservation of momentum, we have:m1 × 0 + m2 × 0 = m1v1 + m2v2where, v1 = velocity of the squid before expelling the water

∴m1v1 = -m2v2 ∴v2 = (-m1v1) / m2 = (-m1v1) / (1.85 kg)

The squid must expel the water at a velocity of v2 = (-m1v1) / (1.85 kg) to instantaneously achieve a speed of 2.70 m/s to escape the predator.

This means that the squid does not need to expel any water to achieve a speed of 2.7 m/s. The speed can be achieved by the squid's own muscular propulsion.

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The motor should exert a maximum force of 50762 N and a minimum force of 44298 N on the supporting cable.

The motor should press on the support cable with an extreme force of 50762 N as well as a minimum pressure of 44298 N.

You must locate second derivative for solving issues like that: In the case of a positive second derivative, the force has reached its minimum; in the case of a negative second derivative, it is at its maximum.

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Answer:

They are inversely proportional with each other. \(R\) ∝ \(\frac{1}{I}\)

Explanation:

By the equation V=IR, assume V is constant.

Since I and R are on the same side,

if I increase, R decreases, or the vice versa.

Applied force pulling a box is when an outside force pushes at the surface of the box to move it on the surface. The friction provided by the surface acts as the opposing force, and the side on which the person is pushing becomes the normal to which all the calculations are made.
The equation to solve these problems can be:

Force = mass ×acceleration

Tension pulling a box is when an outside force pulls on the box, for example, a rope pulling a box. The friction provided by the surface acts as the opposing force. The side on which the tension is being applied becomes the normal to which all calculations are made.

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Answer:

because these units are derived from combinations of two or more of the seven base units

No, the anion of the element is more stable than the neutral atom but an electron in an atom or ion is lower in energy than a free electron.

We know that,

Kinetic energy is defined as the energy of the object that occurs due to the motion of the object. The total work needed by the body to starts accelerating it by the help of given mass which is supplied from the rest position and its mentioned velocity.

The energy body gets due to the process of acceleration by this the body will able to main the kinetic energy of the body without changing the speed of the body.

The energy which has been stored in the body or any object by the help of the particular position or the proper arrangement of the parts is known as potential energy.

There will be no effect of the outside environment on the potential energy that present inside the body.

The kinetic energy decrease or increase with change into the velocity.

Therefore, No, the anion of the element is more stable than the neutral atom but an electron in an atom or ion is lower in energy than a free electron.

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Answer: B - Both electric and magnetic fields

Explanation: Ap*x verified just did the test and got it correct, answer is right infront of me at the moment

Answer: B

Explanation: just took the quiz on AP3X

Answer:

7 hours and 30 mins

Explanation:

Batteries often convert chemical energy directly to electrical energy.

From the experiment, the constructed conclusion was that;

When energy from a battery is added to water, two streams of gas bubbles is said to be  produced. Then a lit match is put into  trapped gas from these two sources, one pops and the other glows brighter.

The study was to test the  flammability of gases produced by providing energy to water with electricity.

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Answer:

c) Water molecules melt into gas molecules.

The chemical structure of water when it changes state - D. Nothing happens to the chemical structure.

Physical state of an object is the condition where substance have different energy content. For instance water is on heating it change into vapor or gaseous phase while cooling (decreasing heat content) causes water to become ice in solid phase. Therefore,

Thus, the change in physical state do not affect chemical properties, but affects the kinetics of the reactions.

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Answer:

Find the given attachments

We will have the following:

So, the butterfly traveled 3298 meters.

a) The power factor of the circuit is 0.75.

b) A capacitive load of approximately 136.42 kVARs is needed to improve the power factor to 0.95 lagging.

a) To decide the power factor (PF) of the circuit, we can utilize the data given by the ammeter (current) and the voltmeter (voltage). The power factor is the cosine of the stage point between the current and voltage waveforms.

The recipe to work out power factor is PF = P/(|V| * |I|), where P is the dynamic power in watts, |V| is the greatness of voltage in volts, and |I| is the extent of current in amperes. Utilizing the given qualities: P = 1350 W, |V| = 120 V, and |I| = 15 A, we can compute the power factor as follows: PF = 1350/(120 * 15) = 0.75.

b) To further develop the power element to 0.95 slacking, we want to acquaint a capacitive burden with make up for the slacking receptive power in the circuit.

The receptive power is given by the recipe Q = P * tan(θ), where Q is the responsive power, P is the dynamic power, and θ is the stage point. Since the power factor is slacking (under 1), the stage point θ is positive.

The recipe for the necessary responsive ability to accomplish the ideal power factor is Q = P * (tan(θ1) - tan(θ2)), where θ1 is the underlying stage point and θ2 is the ideal stage point. Given P = 1350 W and θ1 = acos(PF1) = acos(0.75), we can ascertain Q utilizing the equation.

Then, Q = 1350 * (tan(acos(0.75)) - tan(acos(0.95))) ≈ 136.42 VAr. Since the necessary receptive power is positive, we want a capacitive burden to give - 136.42 VAr (kvars) to further develop the power element to 0.95 slacking.

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Given the data from the question,

A. The frequency of the wave is 0.2 Hz

B. The speed of the wave is 0.5 m/s

f = 1 / T

f = 1 / 5

f = 0.2 Hz

v = λf

v = 2.5 × 0.2

v = 0.5 m/s

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Answer:

The answet is B. Hope thia is right! btw this is also my lesson xD

Answer:

4 N

Explanation:

mass = 2 kg

acceleration = 2 m/s^2

Force = mass * acceleration

         = 2 *2

         = 4 N