When is the magnitude of the acceleration of a mass on a spring at its maximum value?
A.
when the mass has a speed of zero
B.
when the mass is moving upward
C.
when the mass has no displacement
D.
when the mass is 1

2 x

Answer:

D.400 watt

Explanation:

where Pave = average power

Irms=RMS current &

Vrms=RMS voltage

Explanation:

In brief, electrons are negative charges and protons are positive charges. An electron is considered the smallest quantity of negative charge and a proton the smallest quantity of positive charge.

Two negative charges repel. Also, two positive charges repel. A positive charge and a negative charge attract each other (all experimentally verified.)

Point Charge: An accumulation of electric charges at a point (a tiny volume in space) is called a point charge.

Note: When an atom loses an electron, the separated electron forms a negative charge, but the remaining that contains one less electron or consequently one more proton becomes a positive charge. A positive charge is not necessarily a single proton. In most cases, a positive charge is an atom that has lost one or more electron(s).

Racial formations are defined as the social historical concepts by which radial identities are created lived out, transformed, and destroyed.

Race is the way of separating groups of people based on social and biological aspects. It is the process through which a specific group of people is defined as race.

Racial formations explain the definition of specific race identities. It examines the race as a dynamic social construct with structural barriers ideology etc.

This theory gives attempt to determine the difference between people based on how they live rather than how they look. Hence, in the racial formations essay reading, race is defined as a socio-historical concept.

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The time of motion of the bullet is 0.064s.

The horizontal speed of the bullet is 781.25 m/s.

The time of motion of the bullet is the time taken for the bullet traveled from its initial position to the final position and it is calculated as follows;

h = vt + ¹/₂gt²

where;

0.02 = 0 + ¹/₂(9.8)t²

0.02 = 4.9t²

t² = 0.02/4.9

t² = 0.0041

t = √0.0041

t = 0.064 s

The horizontal speed of the bullet is calculated using the following formula shown below;

X = Vₓt

where;

Vₓ = X/t

Vₓ = (50 m) / (0.064)

Vₓ = 781.25 m/s

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The type of circuit which have been made is the series circuit in this scenario.

This is a complete path which involves the whole electric current flowing through the various parts such as resistor etc..

There is only one path of current in which it does not undergo any form of split during motion.

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At 10 grams of hot water cool by 1°C, the amount of heat given off is A.  41.8 joules (the closest option is A) 41.9 calories).

When 10 grams of hot water cools by 1°C, the amount of heat given off can be calculated using the specific heat capacity of water. The specific heat capacity of water is approximately 4.18 J/g°C.

To calculate the amount of heat given off, we can use the formula:

Q = m * c * ΔT

Where:

Q is the amount of heat given off (in joules),

m is the mass of the water (in grams),

c is the specific heat capacity of water (in J/g°C), and

ΔT is the change in temperature (in °C).

Substituting the given values into the formula, we get:

Q = 10 g * 4.18 J/g°C * 1°C

Q = 41.8 J

Therefore, the amount of heat given off is approximately 41.8 joules.

None of the provided answer choices exactly matches the calculated value, but the closest option is A) 41.9 calories. Please note that 1 calorie is equivalent to approximately 4.18 joules. Therefore, Option A is correct.

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Answer:

Citric

Explanation:

Citric and acetic acids are naturally found in foods and can be safe to eat.

Answer:

citrus

Explanation:

i think i am sure

It is true if the sum of both the external torques and the external forces on an object is zero, then the object must be at rest .

Newton's First Law states that an object with no net forces acting on it which is initially at rest will remain at rest. If it is moving, then it will continue to move in a straight line with constant velocity.

If net external force on a system of particles is zero then the velocity of the center of mass of the system must also be constant. A body is said to be in rest if it does not change its position continuously with respect to surroundings and with the passage of time.

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The relative velocity is obtained as 5.3 m/s from the calculation as shown below.

We know that motion refers to the change in the position of an object with time. Give that we know that motion is relative and the position of the two objects that are in motion must always be taken into consideration. In this case, we have the situation in which Timmy and his friends are moving backwards and the runway is moving forward thus they are actually moving in opposite directions as seen.

Let us note that velocity is a vector quantity hence we have to assign the forward direction as positive and the backwards direction as negative. Thus we can then take the relative motion between Timmy and his friend and the walk way can be obtained quite conveniently by the use of;

6.9 m/s - 1.6 m/s  = 5.3 m/s

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k is the number of standard deviations greater than one that that proportion of observations will be discovered within.

A standard deviation measures the spread of data in relation to the mean.

A low standard deviation suggests that the data is concentrated around the mean, whereas a high standard deviation shows that the data is spread.

A standard deviation near 0 suggests that data points are close to the mean, whereas a high or low standard deviation indicates that data points are above or below the mean, respectively.

The curve on top of Image 7 is more spread out and hence has a higher standard deviation, whereas the curve below is more grouped around the mean and thus has a smaller standard deviation.

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Answer:

melt

Explanation:

hope it helps you plz mark me brilliantest

Answer:

i think E hola

Explanation:

I dont know

Answer: B Genes make up chromosomes

Explanation: hope it helps

The Kelvin scale is known as the absolute scale. The lowest temperature in Kelvin is the temperature 0 (there is no negative temperature in Kelvin).

The conversion from Kelvin to Fahrenheit is given by the formula below:

Using K = 0 in this formula, we have:

So the lowest temperature in Fahrenheit is -459.67 °F.

Answer:

\(2000\; {\rm cm^{3}}\).

Explanation:

When the ball is placed in this pool of water, part of the ball would be beneath the surface of the pool. The volume of the water that this ball displaced is equal to the volume of the ball that is beneath the water surface.

The buoyancy force on this ball would be equal in magnitude to the weight of water that this ball has displaced.

Let \(m(\text{ball})\) denote the mass of this ball. Let \(m(\text{water})\) denote the mass of water that this ball has displaced.

Let \(g\) denote the gravitational field strength. The weight of this ball would be \(m(\text{ball}) \, g\). Likewise, the weight of water displaced would be \(m(\text{water})\, g\).

For this ball to stay afloat, the buoyancy force on this ball should be greater than or equal to the weight of this ball. In other words:

\(\text{buoyancy} \ge m(\text{ball})\, g\).

At the same time, buoyancy is equal in magnitude the the weight of water displaced. Thus:

\(\text{buoyancy} = m(\text{water}) \, g\).

Therefore:

\(m(\text{water})\, g = \text{buoyancy} \ge m(\text{ball})\, g\).

\(m(\text{water}) \ge m(\text{ball})\).

In other words, the mass of water that this ball displaced should be greater than or equal to the mass of of the ball. Let \(\rho(\text{water})\) denote the density of water. The volume of water that this ball should displace would be:

\(\begin{aligned}V(\text{water}) &= \frac{m(\text{water})}{\rho(\text{water})} \\ &\ge \frac{m(\text{ball}))}{\rho(\text{water})} \end{aligned}\).

Given that \(m(\text{ball}) = 2000\; {\rm g}\) while \(\rho = 1.00\; {\rm g\cdot cm^{-3}}\):

\(\begin{aligned}V(\text{water}) &\ge \frac{m(\text{ball}))}{\rho(\text{water})} \\ &= \frac{2000\; {\rm g}}{1.00\; {\rm g\cdot cm^{-3}}} \\ &= 2000\; {\rm cm^{3}}\end{aligned}\).

In other words, for this ball to stay afloat, at least \(2000\; {\rm cm^{3}}\) of the volume of this ball should be under water. Therefore, the volume of this ball should be at least \(2000\; {\rm cm^{3}}\!\).

Answer:

\(a = \frac{v_{f} - v_{i}}{t} \\ = \frac{77 - 5}{8} = \frac{72}{8} \\ \boxed{a = 9 \: m. {sec}^{ - 2} }\)

Given function isv(t) = t³ +13t²+47t-35and time interval is 1≤t≤7. We have to calculate:

(a) Displacement

(b) Total Distance

(a) Displacement:

Displacement is defined as the shortest distance between initial and final points. We can find the displacement of a particle with the help of following formula:

Displacement = Final Position - Initial PositionHere, the particle moves along a straight line, and we don't know the initial and final position.  Thus, the displacement of the particle is 219 ft.(b) Total Distance:Total distance traveled by the particle is the sum of all the distances covered by it in different intervals.

Thus, we have two real roots of the given equation:t₁

≈ - 6.548t₂

≈ 0.215

Therefore, ∫|v(t)|dt = 309

As we have to find the total distance, we have to add both the cases. Therefore,

Total Distance =∫|v(t)|dt  [from 1 to 7]

=∫|v(t)|dt [from 1 to 7]

=∫|v(t)|dt (from 1 to 1.215) +|v(t)|dt (from 1.215 to 7) = 252 + 309= 561 ft Thus, the total distance traveled by the particle is 561 feet.

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Answer:

i dont know i want points tho

Explanation:

The change in internal energy of the system is 38.8 J.

To find the change in internal energy of the system, we need to consider the work done on the gas and the heat transferred to the system during the expansion.

First, let's calculate the work done on the gas. The work done can be calculated using the formula:

Work = Force x Distance

The force can be calculated by multiplying the pressure by the area of the piston. Given that the pressure is 800 N/m^2 and the cross-sectional area is 0.1 m^2, the force can be calculated as:

Force = Pressure x Area = 800 N/m^2 x 0.1 m^2 = 80 N

The distance is given as 4 cm, which is equal to 0.04 m. So, the work done on the gas is:

Work = Force x Distance = 80 N x 0.04 m = 3.2 J

Next, let's calculate the heat transferred to the system. The heat transferred can be calculated using the formula:

Heat = Work + Change in Internal Energy

Given that the heat transferred is 42 J, and we have already calculated the work done as 3.2 J, we can substitute these values into the formula to find the change in internal energy:

42 J = 3.2 J + Change in Internal Energy

Rearranging the equation, we get:

Change in Internal Energy = 42 J - 3.2 J = 38.8 J

Therefore, the change in internal energy of the system is 38.8 J.

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Answer:

36.67 °C

Explanation:

To convert 98 °F to °C, you can use the following formula:

°C = (°F - 32) x 5/9

Plugging in the value of 98 °F, we get:

°C = (98 - 32) x 5/9

= 66 x 5/9

= 36.67 °C

Therefore, 98 °F is equivalent to 36.67 °C.

Answer:

Brightness.

Explanation:

very bright.

Light energy with very high amplitude would be perceived as very bright or intense light.

Waves with a big maximum displacement or height relate to light energy with a very high amplitude.

This large amplitude equates to a greater intensity or brightness of light in terms of perception.

When high-amplitude light waves enter our eyes, they excite light-sensitive cells, such as the cones in our retinas, more powerfully.

As a result of the increased stimulation, the sense of a bright or powerful light source is formed. The magnitude of the light's amplitude is interpreted by the human visual system as a measure of its intensity, allowing humans to distinguish between dimmer and brighter light sources.

Thus, in human visual experience, light energy with a very high amplitude is related with a heightened feeling of brightness or intensity.

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The statement "a force is equivalent to a rate of transfer of momentum" is true.

A force is equivalent to a rate of transfer of momentum. This is known as Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass.

In mathematical terms, Newton's second law can be written as:

F = ma

where F is the net force acting on an object, m is the mass of the object, and a is the acceleration of the object.

The unit of force is the Newton (N), which is defined as the force required to accelerate a mass of one kilogram at a rate of one meter per second squared (1 N = 1 kg m/s²).

Similarly, the unit of momentum is the kilogram-meter per second (kg m/s), and the rate of transfer of momentum is given by the force applied to an object.

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Answer:

V=14

Explanation:

PE=KE

mgh=1/2mv^2

(2)(9.8)(10)=1/2(2)v^2

(radical) 196=(radical) v

V=14

Electromagnetic and Computational Sciences (EECS) scholars study electromagnetic phenomena like radiation, propagation, and scattering as defined by Maxwell's theory.

They create mathematical tools for analyzing and assessing electromagnetic solutions to real-world devices, systems, and issues in electrical engineering. Electrical engineering giants Maxwell, Faraday, Hertz, Marconi, and Tesla founded applied electromagnetics.

It now includes micro-electromechanical systems, metamaterials, nanomagnetic, biological uses of electromagnetic fields, information technologies, and other innovative devices and structures.

Telecommunications, military, microwave instruments, medical equipment, and others need students with these talents. Wireless communications and related technologies are driving significant growth in these businesses.

Statics, radio, THz, infrared, and optical frequencies are of interest. Electrically small antennas, millimeter-wave phased arrays, multi-input/multi-output (MIMO) antenna systems, micro-electromechanical systems, artificial impedance surfaces and scattering control, photonic topological insulators, nonlinear and active electromagnetic structures, plasma and vacuum devices, field and photoemission, biological effects of electromagnetic fields, electromagnetic interference shielding, and more are researched.

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Answer:

The answer is C

Explanation:

Testable meaning experiments can be conducted to support or refute the hypothesis. This is done through data.

The pressure of the gas in the container will be 3.02 atm.

The Ideal Gas Law equation is PV = nRT.

P represents the pressure of the gas

V represents the volume of the gas

n represents the number of moles of gas present

R represents the ideal gas constant

T represents the absolute temperature of the gas expressed in kelvin

The problem inquires about the pressure inside the container at 350 K (Kelvin), given that

w=1988, x=26, and y=0.52.

To compute the number of moles of the gas (n), we need to rearrange the equation above as follows:

PV = nRT

n = PV / RT

Substitute the given values into the above equation:

n = (26 atm × 1988 L) / (0.52 L atm K⁻¹ × 350 K)

Solve for n:

n = 3.422 moles of gas

To compute the pressure of the gas (P), we need to rearrange the equation above as follows:

P = nRT / V

Substitute the given values into the above equation:

P = (3.422 mol × 0.52 L atm K⁻¹ × 350 K) / 1988 LP = 3.02 atm

The pressure of the gas in the container will be 3.02 atm.

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Answer:

amplitude

Explanation:

sound travel and it amplifies

Answer:

If you like my answer than please mark me brainliest thanks

Speed = Distance/time

Speed = 800/40

Speed = 20 metre per second

From conservation of energy, the height he will reach when he has gravitational potential energy 250J is 0.42 meters approximately

The given weight of Elliot is 600 N

From conservation of energy, the total mechanical energy of Elliot must have been converted to elastic potential energy. Then, the elastic potential energy from the spring was later converted to maximum potential energy P.E of Elliot.

P.E = mgh

where mg = Weight = 600

To find the height Elliot will reach, substitute all necessary parameters into the equation above.

250 = 600h

Make h the subject of the formula

h = 250/600

h = 0.4167 meters

Therefore, the height he will reach when he has gravitational potential energy 250J is 0.42 meters approximately

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Answer:

option B

Explanation:

given,

Satellite B has an orbital radius nine times that of satellite A.

R' = 9 R

now, orbital velocity of the satellite A

........(1)

now, orbital velocity of satellite B

from equation 1

hence, the correct answer is option B

Based on the process of formation of rocks at a hotspot, ,a rock that is 55 million years old will occur far away from the hotspot of a volcano.

A hot spot is a region found deep within the mantle.of the Earth from which heat rises to the surface by the process of convection forming volcanoes on the crust above.

The farther away a rock occurs from a hotspot of a volcano, the older the age of the rock.

Therefore, a rock that is 55 million years old will occur far away from the hotspot of a volcano.

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