Measuring electrical activity of the brain over time is done using __________. a. pet scans b. eegs c. mris d. ct scans please select the best answer from the choices provided a b c d

the resultant force is F=F1-F2.

F1 = 20 N, and F2 = 50 N

In this instance, two different resultant forces are feasible.

when the two are at an angle of A with one another.

See the outcome in case 1 of the image if both are facing the same way. if they are both facing the opposite directions. when both are at a zero-degree angle from one another If they are parallel to one another and moving in the same direction, the resultant force is F=F1+F2. If they are parallel but moving in the opposite direction, the resultant force is F=F1-F2.

Learn more about resultant force here-

https://brainly.com/question/16380983

#SPJ9

The ship travels with a velocity of 15 km/h within 2 hours. The distance travelled is the velocity times the time taken that is 30 km to the north.

Velocity is a physical quantity measuring the distance travelled by an object per unit time. Velocity is the rate of speed and it is a vector quantity having both magnitude and direction. The unit of velocity can be m/s, km/h, ft/s etc.

Velocity is the ratio of the change in distance to the change in time. The change in distance is sometimes called the displacement.

then velocity  = displacement / time

Given that velocity = 15 km/h

time taken = 2 hours

then displacement = velocity × time

= 15 × 2 = 30 Km

Therefore, the displacement of the ship is 30 km to the north.

Find more on velocity:

https://brainly.com/question/18084516

#SPJ2

The economic impact resulting from the collapse of two large power grids and 130 million people being without power for two months due to a 4800 nT/min geomagnetic storm disturbance in the United States would be substantial, likely amounting to billions of dollars.

1. Loss of productivity: The major factor contributing to the economic impact would be the loss of productivity during the two-month period. Without power, businesses, industries, and essential services would be severely disrupted, leading to a decline in output and economic activity.

To estimate the economic impact, we need to consider the following factors:

a. GDP per capita: According to the World Bank, the United States' GDP per capita was approximately $63,416 in 2020.

b. Average number of working days in two months: Assuming an average of 22 working days per month, we have a total of 44 working days affected by the power outage.

c. Workforce participation rate: As of September 2021, the U.S. labor force participation rate was around 61.6%.

d. Affected population: Given that 130 million people are without power, we need to calculate the percentage of the workforce among them. Assuming the workforce participation rate remains constant, the affected workforce can be estimated as follows:

Affected workforce = Workforce participation rate * Affected population

Affected workforce = 0.616 * 130,000,000

Affected workforce  ≈ 79,976,000

e. Loss of productivity per day: To estimate the loss of productivity per day per worker, we can divide the GDP per capita by the average number of working days in a year:

Loss of productivity per day per worker = GDP per capita / 365

Loss of productivity per day per worker  ≈ $63,416 / 365

Loss of productivity per day per worker   ≈ $173.63

f. Total loss of productivity: The total loss of productivity during the two-month period can be calculated by multiplying the loss of productivity per day per worker by the number of affected working days and the affected workforce:

Total loss of productivity = Loss of productivity per day per worker * Number of affected working days * Affected workforce

                        ≈ $173.63 * 44 * 79,976,000

                        ≈ $610,964,195,520

Additional costs: The economic impact would also include additional costs incurred due to the power outage, such as emergency response efforts, infrastructure repairs, and the financial burden on individuals and businesses.

Based on the calculations, the economic impact resulting from the collapse of two large power grids and 130 million people being without power for two months due to a 4800 nT/min geomagnetic storm disturbance would be estimated at approximately $610.96 billion in terms of loss of productivity alone.

This estimate does not include the additional costs associated with the power outage, which would likely further increase the economic impact.

To know more about geomagnetic  visit:

https://brainly.com/question/28817273

#SPJ11

Answer:

Work is measured joules.

Answer:

Joule

Explanation:

Since energy and work are two sides of the same coin, they are measured with the same units. The SI unit of energy/work is the joule (J), named for English physicist James Prescott Joule (1818 - 1889).

Answer:

The final angular speed is 16.1 rad/s

Explanation:

Given;

initial moment of inertia, I₁ = 2.56 kg.m²

final moment of inertia, I₂ = 0.40 kg.m²

initial angular speed, ω₁ = 0.4 rev/s = 2.514 rad/s

Apply the principle of conservation of angular momentum;

I₁ω₁ = I₂ω₂

where;

ω₂ is the final angular speed

ω₂ = (I₁ω₁) / (I₂)

ω₂ = (2.56 x 2.514) / (0.4)

ω₂ = 16.1 rad/s

Therefore, the final angular speed is 16.1 rad/s

Answer:

It is C the kelvin scale

Explanation:

Have a great day

This is not a gamma radiation because there is a change in the atomic number of the daughter nucleus. It is rather a beta decay.

We have to note that when we talk about a decay we are talking about the manner that we can be able to break up the atom of a radioactive substance so that we can be able to produce a new substance.

We can see now that what we have here is the loss of a beta ray or an electron from the specie that is shown. This is evidenced by the change in the atomic number of the daughters nucleus.

Learn more about radioactive decay:https://brainly.com/question/1770619

#SPJ1

By considering building a system of two positive charges: The work done by an external agent is negative.

Any attempt by an outside force to combine two positive charges would be harmful. This is done in order to overcome the electrical force that now opposes the movement of the two positive charges toward one another. Negative work is defined as an effort made to control a disagreeable factor. However, if the two positive charges are already close to one another and the external agent operates to separate them, the work done would be beneficial. This is due to how weak the electrical force that holds the two positive charges together becomes when they are separated, necessitating the aid of an outside force. When work done to separate charges, it is viewed favorably. It's important to keep in mind that the concept of work includes all kinds of forces, not only electrical ones. The sign of the work generated by an external source is determined by the force's direction and the charges' displacement. If both the force and the displacement are travelling in the same direction, the work is positive. If the force and displacement are moving in the opposite directions, the work is negative.

To know more about work done please refer: https://brainly.com/question/29989410

#SPJ4

Answer:

The Northern flowing stream will affect the coast of Europe by  making  climate of Western Europe and Northern Europe to be warmer than other areas that are located around the same latitude and this is simply because of the North Atlantic Current

Explanation:

The Northern flowing stream will affect the coast of Europe because the North Atlantic current causes the Gulf stream to be split into two ( 2 ) and the Northern stream which is a warm stream crossing over to Northern Europe. The Gulf stream makes climate of Western Europe and Northern Europe to be warmer than other areas that are located around the same latitude and this is simply because of the North Atlantic Current

The linear speed of an object is 333.7 m/s, while the angular speed is 7.292 x 10^-5 rad/s.

Determining the angular speed of the Earth:

The angular speed of the Earth can be calculated using the formula:

Angular speed (ω) = 2π / time taken for one revolution (T)
First, convert 23 hours, 56 minutes, and 4 seconds into seconds:

23 hours = 23 * 3600 = 82800 seconds
56 minutes = 56 * 60 = 3360 seconds
Total time (T) = 82800 + 3360 + 4 = 86164 seconds

Now, calculate the angular speed:

ω = 2π / 86164 ≈ 7.292 x 10^-5 rad/s
The angular speed of the Earth is approximately 7.292 x 10^-5 rad/s.

To find the linear speed of an object on the surface, use the formula:
Linear speed (v) = ω * r
Where ω is the angular speed, and r is the radius of the Earth at the given angle. First, calculate the radius:
r = R * cos(angle)

Assuming the Earth's radius (R) is 6371 km, and the angle is 43 degrees:
r = 6371 * cos(43) ≈ 4575.5 km
Now, convert the radius to meters:
r = 4575.5 * 1000 = 4575500 m
Next, calculate the linear speed:

v = (7.292 x 10^-5 rad/s) * 4575500 m ≈ 333.7 m/s

The linear speed of an object on the surface relative to someone on the rotation axis is approximately 333.7 m/s.

To know more about the linear and angular speed of an object, visit:

https://brainly.com/question/4721004

#SPJ11

As the spring moves from the point of maximum compression to maximum stretch in a frictionless environment, the following energy conversions take place:The spring’s elastic potential energy is converted to kinetic energy, which is maximum when the spring passes through the equilibrium position.

This implies that the point at which the spring has maximum speed is the equilibrium position (point C).As the spring is released from its compressed position, it moves towards the equilibrium position, slowing down and coming to a halt momentarily.

Since the kinetic energy is converted back to elastic potential energy, the point at which the spring has minimum speed is the two extreme positions at maximum compression (point A) and maximum stretch (point E).The restoring force acting on the spring is maximum at the extreme positions (points A and E), implying that the acceleration is maximum at these positions. Therefore, the point at which the spring has minimum acceleration is the equilibrium position (point C).

Therefore, in the given diagram, the points of maximum speed, minimum speed, and minimum acceleration are represented as:Maximum speed - Point CMinimum speed - Points A and EMinimum acceleration - Point C.

Learn more on acceleration here:

brainly.in/question/9415862

#SPJ11

Work done is a measure of the energy transferred to or from an object by the application of a force along a displacement. It is defined as the product of the magnitude of the force applied to an object and the distance over which the force is applied in the direction of the force.

To calculate the work done by a tugboat in 12.0 seconds with a power of 8.17 x 10^6 W, we can use the formula:
Work = Power x Time
Substituting the given values, we get:
Work = 8.17 x 10^6 W x 12.0 s
Work = 98.04 x 10^6 J
Therefore, one powerful tugboat can do 98.04 x 10^6 joules of work in 12.0 seconds.

Learn more about work here ;

https://brainly.com/question/31050706

#SPJ11

Answer:

The mobile electric energy gets converted into chemical energy while charging.

Explanation:

According to the law of conservation of energy, no energy is destroyed when one form of energy is transformed to another in the process as energy cannot be created or destroyed. As a result, total amount of energy remains same before and after any kind of transformation.

Generally, lithium ion batteries are used in mobile phones. In such batteries, the electricity is stored in the ionic structure by the chemical changes.

The mobile electric energy gets converted into chemical energy while charging.

The third-order minimum can be observed at an angle determined by the slit separation of 0.045 mm in the given setup.

When light passes through a double-slit setup, it diffracts and forms a pattern of bright and dark fringes. The angle at which these fringes occur depends on the wavelength of light and the slit separation.

The condition for the occurrence of a minimum is given by the equation d * sin(θ) = m * λ, where d is the slit separation, θ is the angle of observation, m is the order of the minimum, and λ is the wavelength of light.

In this case, we are interested in the third-order minimum, which corresponds to m = 3.

The given slit separation is 0.045 mm.

To find the angle of observation, we need to know the wavelength of light used in the experiment. Once we have that information, we can rearrange the equation and solve for θ. The result will give us the angle at which the third-order minimum occurs. It is important to note that without knowing the specific wavelength of light, we cannot provide a numerical value for the angle in this response.

Learn more about double-slit setup :

https://brainly.com/question/28218384

#SPJ11

(1) The magnitude of the force that maintains circular motion acting on the puck is 14.7 N.

(2) The linear speed of the puck is 29.35 m/s.

The given parameters:

The magnitude of the force that maintains circular motion acting on the puck;

\(F = \frac{m_1 v^2}{r}\)

The tension on the string due to the suspended masse is calculated as follows;

\(T = m_2 g\)

Since the two masses are in equilibrium;

\(\frac{m_1 v^2}{r} = m_2g\\\\m_1v^2 = m_2g r\\\\v^2 = \frac{m_2g r}{m_1} \\\\v= \sqrt{\frac{m_2g r}{m_1} } \\\\v = \sqrt{\frac{1.5 \times 9.8 \times 1.7}{0.029} } \\\\v = 29. 35 \ m/s\)

The magnitude of the force that maintains circular motion acting on the puck;

\(F = \frac{m_1v^2}{r} \\\\F = \frac{0.029 \times (29.35)^2}{1.7} \\\\F = 14.7 \ N\)

Learn more about centripetal force here: https://brainly.com/question/20905151

The velocity of the ion released from rest and accelerated through a potential difference of 152V is 6.34 × 10^5m/s.

The electric potential difference is a scalar quantity that measures the energy required per unit of electric charge to transfer the charge from one point to another. The electric potential difference between two points in an electric circuit determines the direction and magnitude of the electric current that flows between those two points. A lithium-ion containing three protons and four neutrons has a mass of 1.16 × 10-26 kg. The ion is released from rest and accelerates as it moves through a potential difference of 152 V.

The change in electric potential energy of an object is equal to the product of the charge and the potential difference across two points. The formula to calculate the velocity of the ion released from rest and accelerated through a potential difference of 152V is:

v = √(2qV/m) where q is the charge of the ion, V is the potential difference, and m is the mass of the ion.

Substituting the values in the formula, we get:

v = √(2 × 1.6 × 10-19 C × 152 V/1.16 × 10-26 kg)v = 6.34 × 10^5m/s

Therefore, the velocity of the ion released from rest and accelerated through a potential difference of 152V is 6.34 × 10^5m/s.

Learn more about potential difference:

https://brainly.com/question/23716417

#SPJ11

Answer:

Height of the cliff: approximately \(51.7\; {\rm m}\).

Speed right before landing: approximately \(27.4\; {\rm m\cdot s^{-1}}\).

Maximum height reached: approximately \(67.4\; {\rm m}\) above the ground (relative to the base of cliff.)

(Assumption: air resistance is negligible, and that \(g = 9.81\; {\rm m\cdot s^{-2}}\).)

Explanation:

Let \(u\) denote the velocity of the projectile at launch.

Under the assumptions, velocity in the vertical direction changes at a constant \(a_{y} = (-9.81)\; {\rm m\cdot s^{-2}}\). Velocity in the horizontal direction would be constant.

Apply the SUVAT equation \(x = (1/2)\, a\, t^{2} + u\, t\) to find the vertical displacement after the \(t = 5.50\; {\rm s}\) flight:

\(\begin{aligned}x_{y} &= \frac{1}{2}\, a_{y}\, t^{2} + u_{y}\, t \\ &= \frac{1}{2}\, (-9.81)\, (5.50)^{2} + (21.0\, \sqrt{3})\, (5.50) \\ &\approx 51.7\; {\rm m}\end{aligned}\).

Thus, the cliff is approximately \(51.7\; {\rm m}\) above the ground.

It is given that the flight took \(t = 5.50\; {\rm s}\). At a rate of \(a_{y} = (-9.81)\; {\rm m\cdot s^{-2}}\), vertical velocity would have changed by \(a_{y}\, t\) during the flight. Hence, the vertical velocity right before landing would be:

\(\begin{aligned}v_{y} &= u_{y} + a_{y}\, t \\ &= 21.0 \sqrt{3} + (-9.81)\, (5.50) \\ &\approx 17.582\; {\rm m\cdot s^{-1}} \end{aligned}\).

Under the assumptions, horizontal velocity would stay constant: \(v_{x} = u_{x} = 21.0\; {\rm m\cdot s^{-1}}\).

Apply the Pythagorean Theorem to find the overall velocity right before landing:

\(\begin{aligned}v &= \sqrt{{v_{x}}^{2} + {v_{y}}^{2}} \\ &\approx \sqrt{21.0^{2} + (17.582)^{2}} \\ &\approx 27.4\; {\rm m\cdot s^{-1}}\end{aligned}\).

When height is maximized, vertical velocity would be \(0\). Apply the SUVAT equation \(x = (v^{2} - u^{2}) / (2\, a)\) to find the vertical displacement when vertical velocity is exactly \(0\; {\rm m\cdot s^{-1}}\):

\(\begin{aligned}x_{y} &= \frac{{v_{y}}^{2} - {u_{y}}^{2}}{2\, a_{y}} \\ &= \frac{0^{2} - (21.0 \sqrt{3})^{2}}{2\, (-9.81)} \\ &\approx 67.4\; {\rm m} \end{aligned}\).

Correction of the mass of the volatile liquid that is subjected to a condensation process is required because part of the vapors that circulate through the system do not condense, and these can go to the atmosphere or be collected by another system.

The collection of the volatile condensed liquid is generally carried out in a piece of equipment (condenser) that has pipes through which the vapors of the element circulate and through which they pass to the liquid phase, decanting it at the end of the system.

To treat the greatest amount of vapors to be condensed, the pipe can be lengthened (number of steps) through which they circulate or the temperature of the condenser element with which they exchange heat (usually water) can be lowered.

However, even in high efficiency systems there will always be a certain percentage of vapors that do not condense, so it will be necessary to make a correction to the mass of liquid collected.

Learn more about the mass of the condensed volatile liquid at https://brainly.com/question/15563071

#SPJ1

a) The width of the first-order bright fringe for 660nm light is 12.3 mm

b)  The width of the first-order bright fringe for 470nm light is 8.85 mm.

c) The distance between the first-order bright fringe for each wavelength is 3.45 mm.

(a) To find the width of the first-order bright fringe for 660nm light, we can use the formula:

w = λL/d

where w is the width of the fringe, λ is the wavelength of the light, L is the distance between the slits and the screen, and d is the distance between the slits.

Substituting the values, we get:

w = (660 x 10^-9 m) x (5.10 m) / 0.270 x 10^-3 m

w = 1.23 x 10^-2 m or 12.3 mm

Therefore, the width of the first-order bright fringe for 660nm light is 12.3 mm.

(b) Similarly, to find the width of the first-order bright fringe for 470nm light, we can use the same formula:

w = λL/d

Substituting the values, we get:

w = (470 x 10^-9 m) x (5.10 m) / 0.270 x 10^-3 m

w = 8.85 x 10^-3 m or 8.85 mm

Therefore, 8.85 mm  is the width of the first-order bright fringe for 470nm light.

(c) The distance between the first-order bright fringe for each wavelength can be found by subtracting the position of the 470nm fringe from the position of the 660nm fringe:

Δx = w660 - w470

Δx = (1.23 x 10^-2 m) - (8.85 x 10^-3 m)

Δx = 3.45 x 10^-3 m or 3.45 mm

Therefore, the distance between the first-order bright fringe for each wavelength is 3.45 mm.

For more such questions on bright fringe, click on:

https://brainly.com/question/19549349

#SPJ11

I'm sorry, but you have not provided the options for the different bins to sort the astronomical measurements into. Please provide the full question with all the necessary information so I can assist you better.
To categorize each astronomical measurement based on the type of telescope used, it's important to understand the two main types of telescopes: refracting telescopes and reflecting telescopes. Refracting telescopes use lenses to bend light while reflecting telescopes use mirrors to reflect light.

1. Refracting Telescope:
- Measurements requiring high contrast, such as observing planets or the Moon
- Measurements of bright objects, where light-gathering power is less important

2. Reflecting Telescope:
- Measurements that require large light-gathering power, such as observing faint galaxies or nebulae
- Measurements needing high resolution, like imaging fine details on distant celestial objects

Remember to consider the specific requirements of each measurement when determining the appropriate telescope type. Refracting telescopes are often used for planetary observations while reflecting telescopes are more suitable for deep-sky objects.

Learn more about the Telescope here:- brainly.in/question/12806473

#SPJ11

Answer:

Mars is an opportunity for humans to carry forward the light of consciousness, plus it is the closest planet like earth, it has land humans can land on and although its small, theres still water

Answer:

Vibration means quickly moving back and forth (or up and down) about a point of equilibrium. ... Something that is vibrating may shake at the same time. If it vibrates in a regular way, it may produce a musical note because it can make the air vibrate. This vibration will send sound waves to the ear and to the brain.

Explanation:

Vibration, periodic back-and-forth motion of the particles of an elastic body or medium, commonly resulting when almost any physical system is displaced from its equilibrium condition and allowed to respond to the forces that tend to restore equilibrium.

Answer:

0.015 seconds

Explanation:

5/330=0.015

Answer:

0.015 seconds

Explanation:

divide 5 m and 330 m/s to get 0.015 seconds.

Taisha operates equipment to transfer oil from one container to another. Her job title is best described as: pump operator.

Spencer manages the flow of electricity through substations and distribution lines. His job title is best described as: Power dispatcher.

Mariko maintains cables and supporting structures for transmitting electricity. Her job title is best described as: Electrical power-line repairer.

Fred operates equipment to transfer hydrogen through pipelines. His job title is best described as: Gas pumping station operator.

Operators are skilled employees in charge of operating an industrial machine or a certain component of the production process. They are taught how to utilise machinery and are trained to operate them.

Operators are experts that manage a company's general operations on behalf of the owner. They assist the organisation in interviewing and hiring high-quality personnel, developing processes and procedures for employees to follow, establishing strategic business goals, and ensuring the business runs efficiently.

So, Taisa, her job title is best described as: pump operator.

Spencer, his job title is best described as: Power dispatcher.

Mariko, her job title is best described as: Electrical power-line repairer.

Fred, his job title is best described as: Gas pumping station operator.

To know more about job title refer to:

https://brainly.com/question/10989772

#SPJ1

Answer:

I think it's D!!

cuz protons are in the atoms

Explanation:

Because the temperature and the radiation are not correlated, they're not represented as functions of each other, they're represented as independent variables thus using graph 5 you cannot figure out how one affect another

Answer:

It doesn’t show how temperature and radiation relate to each other. It’s difficult to draw conclusions from data that’s separated this way.

The magnitudes of the forces can be adjusted in situations where the net force on the rod is equal to zero. In other words, the forces acting on the rod must balance each other out in order for it to be in static equilibrium.

To give a more detailed explanation, static equilibrium occurs when an object is at rest and the net force acting on it is zero.

This means that the sum of all the forces acting on the object must be zero. In the case of the rods shown in the overhead views.

If the forces acting on the rod can be adjusted so that they balance each other out, then the rod will be in static equilibrium.

Hence, the magnitudes of the forces can be adjusted in situations where the net force on the rod is equal to zero, which is necessary for the rod to be in static equilibrium.

learn more about forces click here:

https://brainly.com/question/12785175

#SPJ11

The child's radial/centripetal acceleration at the lowest point of the swing is

a = (3.00 m/s)² / (7.00 m) = 1.29 m/s²

By Newton's second law, the tension in the rope is

T = (3.5 kg) (1.29 m/s²) = 4.5 N

(Does the question really say the child's mass is 3.5 kg? That's little more than the average mass of a newborn, about 3.3 kg. Not exactly a good idea to put a newborn on a swinging rope...)

The correct answer is (e) Hygrometer. A hygrometer is an instrument for measuring the relative humidity of the atmosphere. The hygrometer was invented by Leonardo da Vinci.

Hygometer:

A hygrometer is an instrument that measures the humidity of air or another gas: that is, the amount of water vapor it contains. Instruments for measuring humidity usually rely on measuring some other quantity, such as temperature, pressure, mass, mechanical or electrical changes of a substance as it absorbs moisture . Through calibration and calculation, these measurements can lead to humidity measurements. Modern electronics use condensing temperature (called dew point) or detect changes in capacitance or resistance to measure humidity differences. In 1480, Leonardo da Vinci invented a crude hygrometer.

The 1600s saw a huge leap forward; Francesco Folli invented a more practical device, while Robert Hooke improved many meteorological devices, including the hygrometer. In 1755 the Swiss polymath Johann Heinrich Lambert created a more modern version. Then, in 1783, Swiss physicist and geologist Horace Bénédict de Saussure invented the first hygrometer to measure humidity using human hair.

The maximum amount of water vapor (saturation) that can be held in a given volume of air varies greatly with temperature; cold air can hold less water per unit volume than warm air. Temperature can change humidity.

Complete Question:

What instrument is used to measure relative humidity?

a. an anemometer

b. a barometer

c. a wind vane

d. a psychrometer

e. a Hygrometer.

Learn more about Hygrometer:

https://brainly.com/question/767070

#SPJ4