one joule per coulomb is a unit of group of answer choices resistance. voltage. power. current. energy.

Answer:

Explanation:

The formula for kinetic energy  Ke=1/2mv^2 where Ke is kinetic energy, m=mass, and v= velocity.

If the kinetic energy is increased that means that there must be an increase in mass or velocity. However, since the velocity is squared that means that velocity affects the kinetic energy of the object more than the mass does.

Answer:

250N

Explanation:

w = mg

m=25

g = 10

w=25x10

w=250

If a student is pulling on an object that has a mass of 25 kg across the floor. Assuming gravity to be 10 m/s², then the weight of the object would be 250 N , therefore the correct answer is option C.

It can be defined as the force by which a body attracts another body toward its center as the result of the gravitational pull of one body and another.

As given in the problem, a student is pulling on an object that has a mass of 25 kg across the floor. Assuming gravity to be 10 m/s2,

The weight of the object = 25 × 10

                                          = 250 N

Thus,  the weight of the object would be 250 N , therefore the correct answer is option C.

To learn more about gravity here, refer to the link given below ;

brainly.com/question/4014727

#SPJ2

Using, spectroscopy, astronomers identified a new element in the sun (one that was only later found on earth). today, this element is called helium.

Because it revealed that the sun was made of substances that were absent from the Earth, the discovery of helium in the sun is regarded as one of the greatest achievements of spectroscopy. This proved that the sun is not constructed of the same materials as the Earth, which was a major accomplishment in the area of astronomy.

French astronomer Jules Janssen and British astronomer Joseph Norman Lockyer made the discovery of helium in the sun in 1868. They noticed a yellow spectral line in the sun's spectrum that had no known Earthly chemical explanation. They came to the conclusion that a new element, which they dubbed helium after the Greek word for the sun, "helios," was responsible for producing this line.

To know more about spectroscopy, click here,

brainly.com/question/14854785

#SPJ4

The angle formed between the shaft and the cable when the bob rotates at a constant 20 RPM is approximately 25.6 degrees.

To solve this problem, we need to use the equation for centripetal force:

F = m * (v^2 / r)

where F is the centripetal force, m is the mass of the pendulum bob, v is the velocity of the bob, and r is the radius of the circular path (in this case, the length of the cable).

We know that the bob is rotating at a constant 20 RPM (revolutions per minute). To find the velocity of the bob, we need to convert RPM to radians per second:

20 RPM * (2π radians / 1 revolution) * (1 minute / 60 seconds) = 2π/3 radians/second

Now we can plug in the values for m, v, and r:

F = 3 kg * ((2π/3 radians/second)^2 / 1 m)
F = 12.57 N

The centripetal force is equal to the tension in the cable. We can use this to find the angle between the shaft and the cable using trigonometry. Let's call this angle θ:

sin(θ) = F / mg
sin(θ) = 12.57 N / (3 kg * 9.81 m/s^2)
sin(θ) = 0.426
θ = sin^-1(0.426)
θ = 25.6 degrees

Learn more about angle here:-

https://brainly.com/question/28451077

#SPJ11

When a weightless spring scale is attached to two equal weights, the reading on the scale will be zero. This is because the weights on both sides are balanced, resulting in no net force acting on the scale.

The reason for this is Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. In this case, when one weight exerts a downward force on the spring scale, the other weight exerts an upward force of the same magnitude on the scale.

These opposing forces cancel each other out, resulting in a net force of zero. As a result, the spring scale does not experience any deformation and the reading remains at zero.

It is important to note that this only applies when the two weights are equal. If the weights were different, there would be an imbalance in the forces, causing the spring scale to register a non-zero reading.

In summary, when a weightless spring scale is attached to two equal weights, the reading on the scale will be zero due to the balanced forces acting on it.

For more question  force

https://brainly.com/question/17927930

#SPJ8

Explanation:

50 watts

1500 J - P=W P = 1500 J -50 watts 30 S 3.

The magnitude of power for a set of pulleys does 3200 J of work in 7 seconds is 457.14 watts.

The power is the amount of energy which is transferred or converted per unit of time taken. In the International System of Units, the unit of power is watt. One watt is equal to one joule per second (J/s). Power is sometimes also called as activity. Power is a scalar quantity because it has only magnitude and no direction.

Power = Work done/ Time taken

Power = 3200 J/ 7 sec

Power = 457.14 watts

Therefore, the magnitude of power is 457.14 watts.

Learn more about Power here:

https://brainly.com/question/16160785

#SPJ6

The amount of heat or energy that is lost when the water is cooled is 1,024.1 J.

The amount of heat lost is calculated by applying the formula for heat capacity of water as shown below;

Q = mcΔT

where;

The amount of heat or energy that is lost when the water is cooled is calculated as follows;

Q = 3.5 g x 4.18 J/gC x (90 C - 20 C)

Q = 1,024.1 J

Learn more about heat capacity here: https://brainly.com/question/16559442

#SPJ1

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.

To know more about decay reaction, refer

https://brainly.com/question/16677661

#SPJ11

The expression for the energy stored (E) in a stretched wire of original length (L), cross-sectional area (A), tension (T), and Young's modulus (Y) is given by E = Y * e * ln(L) * A

The work done to stretch the wire can be calculated by integrating the force applied over the displacement. In this case, the force applied is the tension (T) in the wire, and the displacement is the change in length (ΔL) from the original length (L) to the stretched length (L + ΔL).

The tension in the wire is given by Hooke's law, which states that the tension is proportional to the extension of the wire:

T = Y * (ΔL / L)

where Y is the Young's modulus of the material of the wire.

Now, let's calculate the work done to stretch the wire:

dW = T * dL

Integrating this expression from L to L + ΔL:

W = ∫ T * dL = ∫ Y * (ΔL / L) * dL

W = Y * ΔL * ∫ (dL / L)

W = Y * ΔL * ln(L) + C

Here, C is the constant of integration. Since the energy stored in the wire is zero when it is unstretched (ΔL = 0), we can set C = 0.

Finally, the expression for the energy stored in the wire (E) is:

E = W = Y * ΔL * ln(L)

or, if we substitute the cross-sectional area (A) and strain (e) of the wire, where e = ΔL / L:

E = Y * e * ln(L) * A

Thus, the expression for the energy stored (E) in a stretched wire of original length (L), cross-sectional area (A), tension (T), and Young's modulus (Y) is given by:

E = Y * e * ln(L) * A

Learn more about energy on

https://brainly.com/question/13881533

#SPJ1

Answer:

5.1 kg

Explanation:

Its mass on the moon is 5.1 kg because mass is an intrinsic property of a material and does not change with location. Although, its weight might vary because its acceleration of gravity g is dependent on the mass M and radius r of the planet(in this case, moon) involved g = GM/r². Since weight W = mg is dependent o g, weight varies but mass remains constant.

ANSWER:

0.732 m^3/s

STEP-BY-STEP EXPLANATION:

We must convert from ft^3/min to m^3/s.

To do this, we must take into account the following conversion factors:

1 meter is equal to 3.28 feet

1 minute is equal to 60 seconds

Knowing this, we do the conversion just like this:

The fans airflow in m^3/s is 0.732

Answer:

OPTION 3

Explanation:

Velocity specifies speed, while speed incluedes a specific direction

Answer:

d a

Explanation:

Answer:

Sustainable energy is essential to meet uncontrolled rising demand for energy, reduce pollution and shift to resources that can be used again and again.

Explanation:

Considering the Sustainable Goals floated by United Nation, it is essential for all countries to improve their score in all the SD goals.

One of the SD goal is to shift to sustainable energy.

Sustainable energy is essential from following three points

- Reuse of energy source again and again to outcome the fear of resource depletion

- Sustainable energy source shall ensure cleaner environment

- Sustainable energy sources are also essential to meet the rising consumption of energy with time all across the globe.

Some common examples are - Solar energy, Wind Energy, Energy from nuclear fuels etc.

the rod reaches a steady speed, it accelerates to the right.continues to move.

A displacement how an object or particle experiences with regard to time is expressed vectorially as velocity.One meter / second (m/s) is the accepted unit of flow speed (also known as speed).

Velocity is the pace and direction of the an object's movement, whereas speed is the timekeeping that an object is travelling along a path.In other words, velocity is a vector, whereas speed is indeed a scalar value.

To know more about velocity  visit:

https://brainly.com/question/18084516

#SPJ4

The magnitude of the force exerted on the 0.02 C point charge in a 400 N/C electric field is 8 N. It is important to note that the force is a vector quantity, meaning it has both magnitude and direction. In this case, the direction of the force would depend on the polarity of the charge and the direction of the electric field.

The magnitude of the force exerted on a point charge in an electric field can be determined using the formula:

F = q * E

Where: F is the force exerted on the charge, q is the magnitude of the charge, and E is the magnitude of the electric field.

In this case, the magnitude of the electric field is given as 400 N/C, and the magnitude of the point charge is 0.02 C.

Substituting these values into the formula, we get:

F = (0.02 C) * (400 N/C)

Calculating this, we find:

F = 8 N

Therefore, the magnitude of the force exerted on the 0.02 C point charge in a 400 N/C electric field is 8 N. It is important to note that the force is a vector quantity, meaning it has both magnitude and direction. In this case, the direction of the force would depend on the polarity of the charge and the direction of the electric field.

Learn more about electric field from the link

https://brainly.com/question/19878202

#SPJ11

Blue light has a greater frequency and carries more energy than red light when compared.

Electromagnetic frequencies that can be seen by human eyes make up visible light. This spectrum excludes ultraviolet and infrared radiation. The wavelengths and frequencies that an object reflects determine the colours we see. Both waves and particles of light exist. It has wave characteristics like amplitude, period, wavelength, and frequency.

The number of times a wave completes a cycle each second is known as its frequency. Hertz, or cycles per second, is the unit of measurement (Hz).

There is more energy in the light the higher the frequency. As a result, its wavelength shrinks.

To learn more about Frequency :

https://brainly.com/question/30053506

#SPJ4

The combination that equals the rotational work done on a spinning tire is net torque on the tire times the tire's angle of displacement.

The rotational work done on an object is calculated by multiplying the torque applied to the object by the angle through which it rotates. In this case, the spinning tire is subject to a net torque, and it undergoes an angular displacement.

The correct combination is net torque on the tire times the tire's angle of displacement because it follows the formula for calculating rotational work, which is given by:

Work = Torque * Angle of displacement

By multiplying the net torque on the tire by the angle of the tire's displacement, we obtain the rotational work done on the spinning tire.

The rotational work done on a spinning tire is equal to the product of the net torque on the tire and the angle of the tire's displacement. This combination correctly accounts for the torque applied to the tire and the distance it rotates, providing a measure of the work performed in the rotational motion of the tire.

To know more about torque, visit:

https://brainly.com/question/17512177

#SPJ11

Answer:

Difference : Balloon framing go through from foundation to top floor while Platform do not

advantages and disadvantages

Balloon framing : It has less vertical shrinkage  ( disadvantage )

platform framing : It has more vertical shrinkage and fire stops ( advantage )

platform framing : It is easier and safer to use

Reason for platform framing :

Due to these advantages Platform framing has become a better choice

Little added fire stopping is required in platform framing because of double tap plate present which can act as as a fire stop

Steel beam/ glue laminated wood beam is preferred at foundation level because wood beam under the ground will most likely shrink over time

Explanation:

Differences : Balloon framing a form of building houses using a special kind of timber construction its studs start from the foundation and go to all the way to the last floor while in Platform framing the studs are interrupted by floor platforms ( i.e. they do not go through like in Balloon framing )

advantages and disadvantages

Balloon framing : It has less vertical shrinkage  ( disadvantage )

platform framing : It has more vertical shrinkage and fire stops ( advantage )

platform framing : It is easier and safer to use

Reason for platform framing :

Due to these advantages Platform framing has become a better choice

Little added fire stopping is required in platform framing because of double tap plate present which can act as as a fire stop

Steel beam/ glue laminated wood beam is preferred at foundation level because wood beam under the ground will most likely shrink over time

The statement "A push system means providing the next station with exactly what is needed when it is needed" is (a) false

A push system is actually the opposite of providing exactly what is needed when it is needed. In a push system, goods are produced and pushed onto the next station or customer regardless of their immediate need or demand.

This can lead to excess inventory and waste if the products are not sold or used in a timely manner. A pull system, on the other hand, responds to customer demand and only produces what is needed when it is needed.

To know more about push system click on below link :

https://brainly.com/question/31976976#

#SPJ11

Two negatively charged objects are 2 meters apart. the student adds electrons through conduction to one of the objects, then the force of repulsion between the two objects will decrease.

The reason for this is that the negatively charged electrons on the first object will repel the negatively charged electrons on the second object, creating a force of repulsion between them. Adding electrons to one of the objects will increase the number of electrons on that object, resulting in a stronger negative charge. This increase in the negative charge on one object will make it more difficult for the electrons on the other object to push against it, reducing the force of repulsion between the two objects. It's important to note that the amount of decrease in the force of repulsion will depend on the amount of electrons added and the initial charge of the objects. Also, If the distance between the two objects does not change and the charges on the objects are not affected by other factors, the electrostatic force of repulsion between the objects will be inversely proportional to the square of the distance between them.

To know more about electrons please refer: https://brainly.com/question/14048460

#SPJ4

Question - Two negatively charged objects are 2 meters apart. The student adds electrons through conduction to one of the objects. What is the force of repulsion between the two objects?

The maximum and minimum duration of sunlight occur at 40° north latitude during the summer solstice and the winter solstice, respectively.

The maximum and minimum duration of sunlight occur at 40° north latitude when there are solstices. Solstices happen when the Earth's rotational axis is tilted the furthest away from the Sun or the closest to the Sun, causing the longest or shortest day of the year. The two solstices in a year are the summer solstice, which is around June 21, and the winter solstice, which is around December 21.

In the Northern Hemisphere, the summer solstice is the longest day of the year and marks the start of summer. It occurs when the North Pole is tilted toward the Sun at its maximum angle of 23.5°, resulting in the longest duration of sunlight and the shortest night at 40° north latitude. The winter solstice, on the other hand, is the shortest day of the year and marks the beginning of winter. It occurs when the North Pole is tilted away from the Sun at its maximum angle of 23.5°, resulting in the shortest duration of sunlight and the longest night at 40° north latitude.

Solstices happen twice in a year; summer solstice and winter solstice. During the summer solstice, the North Pole is tilted towards the Sun at its maximum angle of 23.5°, thus causing the longest duration of sunlight and the shortest night at 40° north latitude. Conversely, during the winter solstice, the North Pole is tilted away from the Sun at its maximum angle of 23.5°, thus causing the shortest duration of sunlight and the longest night at 40° north latitude.

Learn more about The winter solstice: https://brainly.com/question/29085019

#SPJ11

To find Stanley's average speed, we need to calculate the total distance he traveled and the total time he took.

The distance he traveled south is 120 km and he traveled at a speed of 60 km/hr. Therefore, the time taken to travel 120 km is:

time = distance / speed = 120 km / 60 km/hr = 2 hours

The distance he traveled east is 150 km and he traveled at a speed of 50 km/hr. Therefore, the time taken to travel 150 km is:

time = distance / speed = 150 km / 50 km/hr = 3 hours

The total distance traveled is 120 km + 150 km = 270 km, and the total time taken is 2 hours + 3 hours = 5 hours.

Therefore, the average speed is:

average speed = total distance / total time = 270 km / 5 hours = 54 km/hr

To find Stanley's average velocity, we need to calculate the displacement and the total time taken.

The displacement is the straight-line distance between his starting point and ending point. If we draw a diagram, we can see that Stanley traveled 120 km south and 150 km east. Therefore, the displacement is the hypotenuse of a right-angled triangle with legs of length 120 km and 150 km:

displacement = sqrt(120^2 + 150^2) = 189.7 km

The displacement is to the southeast direction.

The total time taken is 5 hours, as we calculated earlier.

Therefore, the average velocity is:

average velocity = displacement / total time = 189.7 km / 5 hours = 37.94 km/hr southeast

Fishbone diagram, 5 Whys are  two practices are recommended in SAFe for root cause analysis.

The process of locating the underlying causes of issues in order to choose the best solutions is known as root cause analysis (RCA). In contrast to simply treating sporadic symptoms and putting out fires, RCA believes that it is much more effective to systematically prevent and address root causes.

By asking "Why" or "What caused this problem?" you can get to the bottom of any issue using the five whys approach. While you want answers that are succinct and clear, you also want to avoid answers that are too simple and omit crucial information.

To know more about root cause analysis visit:

https://brainly.com/question/28960819

#SPJ4

To start the magnetic field

Answer:

i. \(u=\frac{2s}{t}-v\)

ii. \(v=\frac{2s}{t}-u\)

Explanation:

i.)

\(s=\frac{1}{2}(u+v)t\\\\2s=(u+v)t\\\\\frac{2s}{t}=u+v\\\\\frac{2s}{t}-v=u\)

ii.)

\(s=\frac{1}{2}(u+v)t\\\\2s=(u+v)t\\\\\frac{2s}{t}=u+v\\\\\frac{2s}{t}-u=v\)

Answer:

If you haven't heard, Joe Biden would like to unite America.

It was a focus of the Democrat's campaign. It's even the theme of Biden's inauguration — "America United."

The inaugural committee says the slogan "reflects the beginning of a new national journey that restores the soul of America, brings the country together, and creates a path to a brighter future."

If only it were that easy.

When Biden is sworn in at 12:01 p.m. ET Wednesday as the 46th president of the United States, it will be with the understanding that the country is as divided as it's ever been, as pessimistic as it's been in three decades and facing health, economic and racial crises.

It will also be a very different inauguration than has ever been seen in U.S. history. Four years ago, President Trump was arguing over his crowd size compared with Barack Obama's record-setting turnout of supporters on the National Mall.

Explanation:

btw i would rather have him as president