Your friend's car is stuck in the snow. You push very hard and become very tired but the car won't move. Did you do work?.

The capacitance of the capacitor used for recording of voltages due to brain activity in an EEG is 0.00318 Farads or 3.18 millifarads (mF).

The capacitance can be calculated using the formula I = C*dV/dt, where I is the current, C is the capacitance, and dV/dt is the rate of change of voltage over time. Rearranging the formula, we get C = I/(dV/dt).

In this case, the current is given as 100 mA and the frequency of the signal is 0.5 Hz. Since the voltage is given as 10 V, we can calculate the rate of change of voltage over time as 2*\(\pi\)*0.5*10 = 31.4 V/s.

Plugging in the values, we get:
C = 0.1 A / (31.4 V/s) = 0.00318 F.

Therefore, the capacitance is 0.00318 Farads or 3.18 millifarads (mF).

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Answer:

When the student slides the rock along the flat surface of the frozen pond, according to Newton's second law of motion, the rock is given an initial velocity of motion. According to Newton's first law of motion, the rock will continue to slide indefinitely unless it is slowed or stopped by an opposite force. According to Newton's third law, the rock experiences a reaction force from the force of friction of the ice which slows it down at a rate given by Newton's second law of motion and the rock is seen to decelerate

Explanation:

Newton's first law of motion, states that an object will remain at rest or maintain a uniform motion in a straight line, unless impressed upon by an external force

Newton's second law states that an applied force is equal to the rate of change of momentum it produces

Newton's third law states action and reaction are equal and opposite.

The order of the measurements are;

( i ) 86300 s = 8.63 x 10⁴ s,  order = 4

( ii ) 32.6 x 10⁶ m  = 3.26 x 10⁷ m, order = 7

( iii ) 0.0006 km = 6 x 10⁻¹ m, order = -1

The order of the given measurement is calculated as follows;

We will arrange the measurements by converting them into basic units or standard form so that we can easily evaluate them.

( i ) 86300 s = 8.63 x 10⁴ s

( ii ) 32.6 x 10⁶ m  = 3.26 x 10⁷ m

( iii ) 0.0006 km = 6 x 10⁻⁴  x 10³ m = 6 x 10⁻¹ m

So the order of the measurements are the power expressed in the standard form;

( i ) 86300 s = 8.63 x 10⁴ s,  order = 4

( ii ) 32.6 x 10⁶ m  = 3.26 x 10⁷ m, order = 7

( iii ) 0.0006 km = 6 x 10⁻¹ m, order = -1

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Answer:

The centripetal acceleration of car is 8 m/s².

Explanation:

Answer:

Explanation:

When the swing moves from the lowest point up to either peak, the main force acting is momentum; and when the swing falls from either peak to its lowest point, the main force acting is gravity. If you do not pump your legs fast enough, air resistance along with gravity will keep you down.

Answer:

Point x I think

Explanation:

We can calculate the spring constant of the bungee cord and the maximum velocity of the bungee jumper during the oscillations.

To start, we can use the formula for potential energy to find the spring constant:

PE = mgh = (1/2)kx^2

where m is the mass of the bungee jumper (45.0 kg), g is the acceleration due to gravity (9.81 m/s^2), h is the distance the bungee jumper falls (33.0 m), k is the spring constant, and x is the distance the bungee cord stretches.

Solving for k, we get:

k = 2mgx^2 / (h * x^2)

Substituting in the given values, we get:

k = 2 * 45.0 kg * 9.81 m/s^2 * (33.0 m) / (5 * (33.0 m)^2)

k = 40.0 N/m

Now we can use the formula for a simple harmonic motion to find the maximum velocity of the bungee jumper:

vmax = A * ω

where A is the amplitude of the oscillation (half the distance between the lowest and highest points, which is (33.0 m) / 2 = 16.5 m), and ω is the angular frequency (2π/T, where T is the period of the oscillation, which is 28.0 s / 6 = 4.67 s).

Substituting in the given values, we get:

vmax = 16.5 m * 2π / 4.67 s

vmax = 22.4 m/s

Therefore, the bungee jumper reached a maximum velocity of 22.4 m/s during the oscillations.

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 The charge Q is uniformly distributed throughout the sphere. The correct answer is (B)

When a solid conducting sphere is given a positive charge Q, the charge will distribute itself evenly throughout the surface of the sphere due to the repulsion of like charges. This is known as the "Faraday's ice pail experiment".

According to the principle of electrostatics, the charge on a conductor always resides on its surface and distributes itself in a way that the electric field inside the conductor is zero. Since the charge on a conductor always resides on its surface, it follows that the charge Q in this case must be uniformly distributed throughout the surface of the sphere.

Option (A) is not true because the charge is not concentrated at the center of the sphere. If the charge was concentrated at the center of the sphere, the electric field would not be zero inside the conductor, which contradicts the principle of electrostatics.

Option (C) and (D) are not true because the density of the charge does not change radially outward from the center. If the density decreased or increased radially outward, the electric field inside the conductor would not be zero, which again contradicts the principle of electrostatics.

Option (E) is not true because the charge is distributed throughout the entire volume of the sphere, not just on its surface. A solid conductor has free charges that can move throughout its entire volume, so the charge will distribute itself throughout the entire volume of the sphere until the electric field inside the conductor is zero.

Therefore, the correct answer is (B) it is uniformly distributed throughout the sphere.

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Cutting speed, which is the distance a cutting tool travels in 1 minute, is measured in feet per minute (ft/min).

Cutting speed indicates how fast a metal is removed from the workpiece. Cutting feed focuses on how far the cutting spindle travels across the metal part during one full rotation of the tool.

According to this question, cutting speed is the distance that a point on the circumference of a rotating cutting tool travels in 1 minute.

The measurement of cutting speed is shown as feet per minute or meters per minute (ft/min or m/min) based on the cutting speed velocity.

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A toy car that is 0.12 m long is used to model the actions of an actual car that is 6 m long. So, The acceleration of the actual car is 1515.15 m/s².

The solution to this question can be achieved through the use of the equation: F = ma Where F is force, m is mass, and a is acceleration.

Step 1: Calculating the mass of the toy car using the ratio of lengths m1/m2 = l1/l2, where m1 and m2 are the masses of the toy car and actual car, and l1 and l2 are their respective lengths.

Rearranging, we have:m1 = (l1/l2)m2 = (0.12 m)/(6 m) m2 = 0.02 m2

Step 2: Using the equation, F = ma, we can determine the mass of the toy car: F = ma2 N = (0.02 m2) a a = 2 N / 0.02 m2 = 100 m/s²

Step 3: Using the same force of 5 N, the acceleration of the actual car can be calculated:F = ma5 N = ma m = m2/l2 m = 0.02 m2 / 6 m = 0.0033 kg a = F/m a = 5 N / 0.0033 kg = 1515.15 m/s²

Therefore, the acceleration of the actual car is 1515.15 m/s².

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The probable question may be:

A toy car that is 0.12 m long is used to model the actions of an actual car that is 6 m long. The toy car is pushed with a force of 5 N, causing it to accelerate at a rate of 2 m/s². Assuming the same force is applied to the actual car, calculate the acceleration of the actual car.

Answer:

1. 360/6=60 Kilometers per hour

2. 120/3=40 Kilometers per hour

The elements which are in the unknown according to the diagram given is He and is therefore denoted as option C.

This is referred to as a type of graph which shows the intensity of light being emitted over a range of energies and it varies with properties such as wavelength or frequency. When light is passed through a prism, band of colors are usually observed which signifies light spectrum with the plural being spectra.

In the diagram given , the element He and the unknown have the most similar spectra observed as a result of the lines which fall in almost the same range and place and it makes it the most likely component of the mixture of unknown gases.

This is therefore the reason why option C was chosen as the most appropriate choice.

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Magnitude: The magnitude of the vector is approximately 47.4 units. Direction: The direction of the vector is approximately 123.7 degrees counterclockwise from the positive x-axis.

To find the magnitude of the vector, we use the Pythagorean theorem:

Magnitude = sqrt((-25)^2 + 40^2) ≈ 47.4 units.

To find the direction of the vector, we use the inverse tangent function:

Direction = atan(40 / -25) ≈ 123.7 degrees counterclockwise from the positive x-axis.

The magnitude represents the length or size of the vector, which is found using the Pythagorean theorem. The x and y components of the vector form a right triangle, where the magnitude is the hypotenuse.

The direction represents the angle that the vector makes with the positive x-axis. We use the inverse tangent function to calculate this angle by taking the ratio of the y-component to the x-component. The result is the angle in radians, which can be converted to degrees. In this case, the direction is approximately 123.7 degrees counterclockwise from the positive x-axis.

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Answer:

Hi! These graphs I'm providing below are the answer to this problem, as well as the free response sections. I'll attach them below for you.

Hope this helps! :)

EDIT: I didn't realize that I had solved the problem wrong, so I deleted my answer. The other answer to this question is really good so look at that one, not this. I'm so sorry!

Answer:the distance it travels in each second is decreasing

Explanation:

a. The third sphere must be placed between A and B, closer to A.

b.  the third sphere must be placed at 175 cm from the first sphere.

Since

Using Newton's law of universal gravitation, the net force on the first sphere on the third sphere is F = mAmC/x² where x = distance between sphere C and A

Also, the Force of attraction between there second sphere and the third sphere is F' = mBmC/(R - x)² where R = distance between mA and mB and x = distance between mA and mC.

Since the net force must be zero, then

F = F'

mAmC/x² = mBmC/(R - x)²

So, (R - x)²/x² = mB/mC/mAmC

(R - x)²/x² = mB/mA

Substituting the values of mA and mB into the equation, we have

(R - x)²/x² = 7/2

(R - x)²/x² = 3.5

(R - x)/x = √3.5

(R - x)/x = 1.87

R - x = 1.87x

R = x + 1.87x

R = 2.87x

x = R/2.87

x = 0.35R

Since x = 0.35R, the third sphere must be placed between A and B, closer to A.

Since the position of the third sphere is

So, x = 0.35 × 500 cm

x = 175 cm

So, the third sphere must be placed at 175 cm from the first sphere.

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The effective value of the current is approximately 3.14 A, which is closest to 3.33 A among the given options.

To find the effective value of the current, we can use the formula:

I = (Vp / Z),

where Vp is the peak voltage and Z is the impedance.

For a capacitor, the impedance is given by Z = 1 / (ωC), where ω is the angular frequency and C is the capacitance.

Given that the voltage is e = 50 sin 314t V, the peak voltage is Vp = 50 V.

The angular frequency is ω = 314 rad/s, and the capacitance is C = 200 μF = 200 × 10^(-6) F.

Plugging in the values, we have:

Z = 1 / (314 × 200 × 10^(-6)) = 1 / 0.0628 ≈ 15.92 ohms.

Therefore, the effective value of the current is:

I = (50 / 15.92) ≈ 3.14 A.

The closest option is 3.33 A, so the correct response is O 3.33 A.

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Answer:

The statements are not given, so I will answer in a general way.

We know that when one object is moving with a velocity V, and it wants to come to stop, it needs to accelerate in the opposite direction to the initial velocity (Or decelerate).

As larger this acceleration is, the faster the object will come to a full stop.

Now we have a car (with a mass m) and a truck (with a mass M) are moving with a velocity V.

We can assume that the mass of the truck is larger than the mass of the car, then:

M > m.

Now also remember Newton's second law:

F = m*a

Force equals mass times acceleration.

And we know that both vehicles stop with the same stopping force.

Then the acceleration (deceleration actually) that experiences the car is:

a = F/m

While the acceleration that experiences the truck is:

a' = F/M

Because M is larger than m, we will have:

a' < a

Then the deceleration of the truck is smaller than the one of the car, which means that the car will come to a full stop faster than the truck (or the truck needs more time to stop)

Answer:

decrease

Explanation:

Addition of a lubricant such as oil to a surface will decrease friction. This makes the surface more greasy or slippery. This is very much efficient in machines, for example.

The given statement “Particles are in motion” is indicating that particles have kinetic energy and are moving. Hence, this statement is not indicating a specific state of matter. Hence, None of these. is the right option.

However, based on the states of matter, we can say that the motion of the particles depends on the physical state of matter. The three states of matter are:

Solid: In this state of matter, the particles have the least amount of kinetic energy and are held tightly in their positions by intermolecular forces. As a result, they are only capable of vibrating around their mean positions. The vibrations increase with an increase in temperature.

Liquid: In this state of matter, the particles have more kinetic energy than solids and are held together by relatively weaker intermolecular forces. The particles in the liquid are constantly in motion, which allows them to slide past one another and take the shape of the container that they are in. As temperature rises, the kinetic energy also increases.

Gas: In this state of matter, the particles have the highest amount of kinetic energy and are held together by the weakest intermolecular forces. The particles are in constant, random motion and are free to move in any direction. This gives them the ability to take up all the available space in a container.

The question should be:

Decide which physical states are indicated in the following statement. "Particles are in motion" Choose all that apply. Particles are in motion. a) solid. b) liquid. c) gas. d) none of these.

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Answer:

Explanation:

time= distance/speed

20km/ 15km/h

= 1 1/3 hours (4/3 in mixed fraction)

The predicted frequency of defective calculators can be calculated using the formula:

Predicted Frequency = (Probability of Defect) x (Total Number of Calculators)

In this case, the company claimed a probability of 1% per 1000 calculators. Therefore, the probability of a defective calculator is 0.01 (1% expressed as a decimal).

The total number of calculators tested by Gustavo was 1000.

Substituting these values into the formula, we have:

Predicted Frequency = 0.01 x 1000 = 10

The predicted frequency of defective calculators is 10. This means that, according to the company's claim of a 1% probability, it was expected that out of 1000 calculators, approximately 10 of them would be defective. However, Gustavo found 15 defective calculators, which indicates a slightly higher rate of defects compared to the company's prediction.

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International space station is the mission of NASA. It has launched 134 successful space missions.

International space station is a huge place in the space but in the close orbit with all possible facilities for astronauts , scientists and others

The National Aeronautics and Space Administration (NASA) is an acronym for the National Aeronautics as well as Space Administration. NASA was established as a division of the United States government on October 1, 1958. NASA is just in charge of all research and technology related to aviation and space in the United States.

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The speed of the object is zero when the displacement of the object is maximum, which occurs when the velocity of the object is at its maximum value.  

The displacement is maximum when the magnitude of the momentum is maximum.

In simple harmonic motion, an object oscillates about its equilibrium position with a constant amplitude. The displacement of the object from its equilibrium position is given by the equation:

displacement = amplitude * sin(ωt + phase)

where amplitude is the maximum distance from equilibrium, ω is the angular frequency of the oscillation, t is time, and phase is the initial phase of the oscillation.

The magnitude of the momentum of the object is given by the equation:

momentum = mass * velocity

where mass is the mass of the object, velocity is its velocity, and ω is the angular frequency of the oscillation.

Therefore, the displacement of the object is maximum when the magnitude of the momentum is also maximum, which occurs when the velocity of the object is at its maximum value.

The kinetic energy of the object is maximum when the displacement is maximum.

In simple harmonic motion, the kinetic energy of the object is given by the equation:

kinetic energy = 1/2 * m *\(velocity^2\)

where m is the mass of the object, velocity is its velocity, and ω is the angular frequency of the oscillation.

Therefore, the kinetic energy of the object is maximum when the displacement of the object is maximum, which occurs when the velocity of the object is at its maximum value.

The acceleration of the object is zero when the displacement is maximum.

In simple harmonic motion, the acceleration of the object is given by the equation:

acceleration = -ω * amplitude * sin(ωt + phase)

where ω is the angular frequency of the oscillation, amplitude is the maximum distance from equilibrium, t is time, and phase is the initial phase of the oscillation.

Therefore, the acceleration of the object is zero when the displacement of the object is maximum, which occurs when the velocity of the object is at its maximum value.

The speed of the object is zero when the displacement is maximum.

In simple harmonic motion, the speed of the object is given by the equation:

speed = amplitude * cos(ωt + phase)

where amplitude is the maximum distance from equilibrium, ω is the angular frequency of the oscillation, t is time, and phase is the initial phase of the oscillation.

Therefore, the speed of the object is zero when the displacement of the object is maximum, which occurs when the velocity of the object is at its maximum value.  

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Answer:

B

Explanation:

Makes more sense if you want to keep the current the same>

Answer:

a

Explanation:

thats what i put ithink its wrong tho

Answer:

Explanation:

Given parameters:

Time for speed walking  = 10min

Speed  = 13.63?

Unknown:

Distance you can speed walk  = ?

Solution:

To solve this problem, we simply apply the velocity - time equation;

 Speed  = \(\frac{distance}{time}\)  

 Distance  = speed x time

make sure you speed and time are in the same unit

 Insert the parameters and solve

Answer:

Density is defined as how tightly or loosely packed a substance is, or to the number of things or people in a certain area.

Explanation:

\(\sf{}\)

Answer:

The electrons

Explanation: