A medical defibrillator stores 950 J of energy in a 100uF capacitor.
What is the voltage across the capacitor?
If the capacitor discharges 350J of its stored energy in 3.1ms , what power is delivered during this time?

Answers

Answer 1

Power is given at p=1.13 *10^(-5) throughout this period.

An electrical component that can store and release electric energy is a power capacitor. The device comprises of one or more pairs of plates that are connected to two terminals and allow the stored energy to be released into a circuit as needed. The plates are separated from one another by an insulating material (the dielectric). By removing the reactive power from the supply line, a capacitor aids in the improvement of power factor.

This is accomplished through the capacitor's storage of magnetic reversal energy. Power is defined as energy multiplied by the frequency of an operation. (a) Computation needs switching from one voltage (V 1) to another voltage (V 2) before most likely returning to a starting voltage (like V 1).

Power = u/t

p = 350/(3.1*(1/1000))

p= 1.13 *10^(-5)

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Related Questions

How do you find the value of T when a particle is at rest?

Answers

The value of T when a particle is at rest is 0. The velocity of the particle at t=0 is zero because the particle is in rest position and did not moving at any of the instance or travelling at an uniform speed through out the whole journey or yet did not start from the source point.

Velocity is the rate of change of velocity. At any point on a trajectory, the magnitude of the velocity is given by the rate of change of velocity in both magnitude and direction. Velocity of the body that we can consider is the increasing value of the velocity of any object at a constant rate and that of we can calculate. Hence by the primary information that we have we can formerly consider that the velocity which is acting on the particle at t=0 is zero because the particle is in rest position and did not moving at any of the instance or travelling at an uniform speed through out the whole journey or yet did not start from the source point and the value of T when a particle is at rest is zero.

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1. An interstellar spacecraft, far from the influence of any stars or planets, is moving at high speed under the influence of fusion rockets when the engines malfunction and stop. The spacecraft will (A) immediately stop, throwing all of the occupants to the front of the craft. (B) begin slowing down, eventually coming to a rest in the cold emptiness of space. (C) keep moving at constant speed for a while, but then begin to slow down. (D) keep moving forever at the same speed.

Answers

Using Newton's 1st law of motion. In the absence of external force, the isolated object maintains its condition of uniform motion. Thus, the spaceship keeps its constant speed throughout all of time. Option D is correct.

Newton's First Law: Inertia

According to Newton's first law, unless pushed to alter its condition by the operation of an external force, every object will continue to be at rest or even in uniform motion along a straight line. Inertia is the propensity to maintain balance in a condition of motion.

What does it mean to be inert?

The word "inertia" is derived from the Latin word iners, which meaning idle or sluggish. Inertia is the name for any physical object's opposition to a velocity change. Changes in the item's motion's direction or speed fall under this category.

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Astronomers can use the brightness of two light sources, such as stars, tocompare the distances from the light sources. The intensity, or brightness, of light I is inversely proportional to the square of the distance from the lightsource d. If d is the independent variable and I is the dependent variable, graph the equation from Exercise 42 when k = 16

Answers

By looking at the brightness of two stars, astronomers can compare the relative distance of the two stars from Earth.

Who are astronomers?

Astronomers are scientists who study the universe and its phenomena. They observe, analyze, and interpret astronomical data to understand the physical and chemical properties of celestial bodies and their evolution over time. Astronomers use a variety of tools and techniques, including powerful telescopes, spectroscopy, and computer-based analysis, to explore the universe.

Step 1: Write the equation in the form of y= mx + b.

I = k/d^2

y = k/d^2

Step 2: Substitute the given values for k and m.

y = 16/d^2

Step 3: Graph the equation by plotting points for various values of d.

We can plot points for various values of d. For example:

d = 1, y = 16

d = 2, y = 4

d = 3, y = 16/9

d = 4, y = 1

d = 5, y = 16/25

We can plot these points on a graph and connect them with a smooth curve.

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A lever is used to lift an object with a weight of 60 Newtons. The effort force is 15 meters from the fulcrum, while the load force is 5
meters from the fulcrum. What is the mechanical advantage? (1 point)
0 3
O 12
O 75
0 4

Answers

120 foot pounds of anticlockwise torque are generated around the pivot point by the 60 pound load resting 2 feet from the fulcrum.

How can the load force of a lever be determined?

The force of the effort (Fe) multiplied by the effort's distance from the fulcrum (de) in a class one lever equals the force of the resistance (Fr) multiplied by the resistance's distance from the fulcrum (dr).

What mathematical equation can be used to determine a lever's mechanical advantage?

(b) The optimal mechanical advantage of a lever is equal to the effort arm's length divided by the resistance arm's length. The IMA is typically calculated as the effort force, Fe, divided by the resistance force, Fr.

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Answer:

3

Explanation:

I took the test

What are the most common mutations in SCID?

Answers

A mutation in the interleukin 2 receptor gamma (IL2RG) gene, which makes the common gamma chain subunit, a part of multiple IL receptors, causes X-linked SCID. JAK3 is a crucial signaling molecule that is activated by IL2RG. SCID can also be brought on by a JAK3 chromosome 19 mutation.

Due to mutations in the gene encoding the common chain for several cytokine receptors, X-linked SCID is the most prevalent kind. Adenosine deaminase deficiency (ADA def.) and IL-7R-chain deficiency are the second and third most frequent causes, respectively.

The term "combined immunodeficiency" refers to a genetic abnormality that affects T cells as well as at least one other kind of immune cell in SCID patients. According to which immune cells—T, B, and/or NK cells—are damaged, different types of SCID are categorized.

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20 points! I was thinking B.) Scatter plot but want to check.

A student collected data about the speed of an object over time.

Which type of graph should the student use to represent the data?

Responses

circle graph
scatterplot

histogram

bar graph

Answers

You would definitely be using a scatter plot to measure the speed of an object over time. You will never see a velocity vs time graph as anything other than that. The other options are more the type of graphs you will see in studies or statistic classes.

Where the ungrounded conductors for a 225-ampere feeder are increased in size from 250 kcmil copper to 800 kcmil copper due to length, what is the minimum-size copper equipment grounding conductor required for the circuit?

Answers

The minimum-size copper equipment grounding conductor required for the circuit is 1/0 kcmil.

The NEC (National Electric Code) provides guidelines for the minimum size of equipment grounding conductors.The minimum size of the equipment grounding conductor is based on the ampacity of the feeder circuit.In this case, the ampacity of the feeder circuit is 225 amperes.The conductors for the feeder circuit have been increased in size from 250 kcmil to 800 kcmil due to the length of the circuit.According to the NEC (National Electric Code), the minimum size copper equipment grounding conductor required for a 225-ampere feeder circuit where the conductors have been increased in size from 250 kcmil to 800 kcmil due to length would be 1/0 kcmil.

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The tides are considered an example of shallow-water waves because the tidal bulges have a wavelength that is on the order of __________.

Answers

The tides are considered an example of shallow-water waves because the tidal bulges have a wavelength that is on the order of thousands of kilometers.

Which of the aforementioned tide-related claims is true?

Complete Response.The tides are caused by the sun and moon's tremendous gravitational pulls on the surface of the planet, which is the right answer.

Which of the following is untrue regarding tides' fundamentals?

Response and Justification:Tides are not primarily caused by the gravitational influence of the sun, as is commonly believed.In reality, the Moon's gravitational pull is what mostly causes tides.

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What is the correct definition of minerals

Answers

  The correct definition of minerals is 'nutrients that strengthen bones and teeth, help keep the blood healthy, and keep the heart and other organs working properly'

 Minerals and vitamins are essential micronutrients that the body uses to carry out its normal functions. Minerals can be obtained from foods (or artificially), these micronutrients have fundamental roles in growth, fluid balance, bone health, and different physiological processes.  Some of the most important minerals include calcium, iron, phosphorous, fluoride, selenium, sodium, copper, iodine, and zinc.

a car weighs 3600 kg is traveling at 21.0 m/s. the driver doesn?t notice a red light and rear-ends another car at rest. both cars stick together and move with a speed of 9.0 m/s. what is the mass of the car that was at rest?

Answers

The mass of the car that was at rest is 4800kg.

What is mass?

Measurement of inertia, a fundamental characteristic of all matter. The resistance a body of matter offers to a change in its speed or location as a result of the application of a force is what it is in essence.

What is momentum?

As a measure of an object's kinetic energy, momentum is easily defined. Simply put, momentum is the result of mass times velocity. full response Simply said, momentum is concerned with the quantity of motion. The conserved quantity is another definition for it.

m= 3600kg

Vi= 21.0m/s

Vf = 9.0m/s

conservation of momentum

mVi= (m+M) Vf

mass of rest car M = (Vi-Vf )m/Vf

M = (21.0 m/s - 9.0m/s)* 3600 kg/ 9.0m/s

M= 4800kg

Therefore, the mass of the car that was at rest is 4800kg.

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A lever with an effort arm of 10 meters and a load arm of 2 meters is used to lift an object weighing 220 Newtons to a height of 4 meters. If 400Joules of work is done, how much force must have been applied?
A. 4000N
B.800N
C.100N
D.1600N

Answers

The force that was applied to the lever to raise the load of 220 Newtons   toa distance of 4 m is 100 N.

The correct option is C.

What is a lever?

A lever gives you the ability to move an object with a certain advantage, allowing you to do so with either less effort or more speed or displacement.

The use of forces and the exploitation of the torques they produce is how levers function. By changing the balance, we can carry large objects with little effort.

The law of the lever is given below as follows:

Fa / Fb = b / a

where;

Fa is the effort or force appliedFb is the load or force overcomea is the effort armb is the load or resistance arm

The effort applied, Fa, is calculated below:

Fb = 220 N

a = 10 m

b = 2 m

Fa = Fb * b / a

Fa = 220 * 2 / 10

Fa = 44 N

Work done = Force * distance

distance = 4 m

400 J = Force * 4

Force = 400 / 4

Force = 100 N

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What is moment arm distance?

Answers

The distance between the force's line of action and the center of moments, also known as the moment arm or lever arm, is perpendicular. Force times distance equals moment.

Moment distance: what is it?

A force's moment is determined by its magnitude and distance from the rotational axis. The strength of a force is measured by its moment around a point (the perpendicular distance of the line of action of the force from the point).

What exactly are moment and lever arms?

The distance from an axis to the line of action of a force is known as the moment arm (or lever arm) of a force system. In other words, the moment arm controls the torque's quality.

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An air puck of mass 0.304 kg is tied to a string and allowed to revolve in a circle of radius 0.44 m on a horizontal, frictionless table. The other end of the string passes through a hole in the center of the table and a mass of 1.15 kg is tied to it. The suspended mass remains in equilibrium while the puck revolves. 0.44 m v 1.15 kg 0.304 kg What is the tension in the string

Answers

The tension in the string can be found by using the equation for centripetal force. which is equal to 150.

This equation states that the centripetal force (Fc) is equal to the mass of the object (m) multiplied by the square of the velocity (v) and divided by the radius (r). Therefore,

Fc = m x v²/r.

In this case, the centripetal force is equal to the tension in the string, so the tension in the string (T) can be found by rearranging the centripetal force equation to

T = m x v²/r.

Substituting in the given values for mass (m) and radius (r) gives

T = 0.304 kg x (2.83 m/s)²/0.44 m

T= 150N

Therefore the tension of the string is 150N

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Initial State: An 8-month old child is at rest at the bottom of a staircase. Final State: The 8-month old child is at rest at the top of the staircase. Notes: The system includes the child and earth. The child uses the steps to slowly crawl up the staircase

Answers

Fortunately, even those who have the most severe instances of GBS eventually recover. Some people will still have some weakness when they recover.

The peripheral nervous system, or the network of nerves outside the brain and spinal cord, is mistakenly attacked by the body's immune system in the rare neurological illness known as Guillain-Barré syndrome (GBS). A person with GBS may experience anything from a very mild case with transient weakness to a nearly fatal paralysis that prevents them from breathing on their own.

Anyone can develop Guillain-Barré syndrome. Both sexes are equally prone to the illness, which can affect anyone at any age (although it tends to affect adults and elderly persons more frequently). One in 100,000 people are thought to be affected with GBS each year.

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A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 79.0-kg water-skier has an initial speed of 5.6 m/s. Later, the speed increases to 10.8 m/s. Determine the work done by the net external force acting on the skier.

Answers

The work done by the net external force acting on the skier is 3368.56 J.

What exactly is a physics "work done"?

When an object is moved over a distance by an external force, at least a portion of that force must be applied in the direction of the displacement. This is known as work in physics.

What is a work unit and a SI unit of work?

The joule is the SI unit of labor (J). It is described as the work accomplished over a one-meter distance by a force of one newton.

It is given that,

Mass of the water skier, m = 79.0 kg

Initial speed of the water skier, u = 5.6  m/s

Final speed of the skier, v = 10.8 m/s

Now, we calculate work done by using work energy theorem,

W = ΔE

[tex]W=\frac{1}{2}m (v^2-u^2)[/tex]

[tex]W=\frac{1}{2} 79.0 kg (10.8^2-5.6^2)[/tex]

[tex]W=3368.56J[/tex]

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What is the KE of a 0.5 kg puffin flying at 22 m/s?

Answers

Important Formulas:
[tex]KE=.5mv^2[/tex]

Kinetic energy(measured in joules) = .5 * mass(measured in kg) * velocity(measured in m/s)^2

__________________________________________________________

Given:

[tex]m=0.5kg[/tex]

[tex]v=22m/s[/tex]

[tex]KE=?[/tex]

__________________________________________________________

Finding kinetic energy:

[tex]KE=.5mv^2[/tex]

[tex]KE=.5(0.5)(22)^2[/tex]

__________________________________________________________

[tex]\fbox{KE = 121 Joules}[/tex]

The kinetic energy of Flying pluff is 121 KJ.

What is Kinetic energy?

The energy that an object has as a result of motion is known as kinetic energy.  It is described as the effort required to move a mass-determined body from rest to the indicated velocity.

The body holds onto the kinetic energy it acquired during its acceleration until its speed changes. The body exerts the same amount of effort when slowing down from its current pace to a condition of rest.

Formally, a kinetic energy is any term that includes a derivative with respect to time in the Lagrangian of a system. According to classical physics, an object with mass m moving at a speed of v has kinetic energy equal to mv2.

Therefore, The kinetic energy of Flying pluff is 121 KJ.

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A ball is thrown upward from the ground with an initial velocity of 2.13 m s-1. How long does the ball take (in millisecond, ms) to reach the maximum height

Answers

The time it takes for the ball to reach its maximum height is 745 milliseconds.

What is time?

Time is defined as a scalar quantity that describes the progression of events in the universe. It is often considered to be the fourth dimension of spacetime, along with the three dimensions of space. Time is closely related to the concepts of causality, or the relationship between cause and effect, and is considered to be a fundamental aspect of the physical universe.

To find the time it takes for the ball to reach its maximum height, we need to use the equation:

1/2 * a * t^2 + v * t + d = 0

where a is the acceleration due to gravity (-9.8 m/s^2), t is the time, v is the initial velocity (2.13 m/s), and d is the initial displacement (0 m, since the ball is thrown upward from the ground).

We know that the ball is thrown upward and reaches its maximum height, so it is subject to a constant acceleration due to gravity in the downward direction. Therefore, the acceleration is -9.8 m/s^2.

The time to reach the maximum height can be found by solving the above equation for t.

t = sqrt(-2*d/(a+v))

t = sqrt(-2*0/(-9.8+2.13))

t = sqrt(2*2.13/(9.8-2.13))

t = sqrt(4.26/7.67)

t = sqrt(0.555)

t = 0.745s

To get the time in milliseconds:

t = 0.745s * 1000ms/s = 745 ms

Therefore, the time it takes for the ball to reach its maximum height is 745 milliseconds.

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You have seen how large Jupiter would be if the Sun were a 1 meter sphere. Using the same scale, how large would the other planets be

Answers

After seeing how big Jupiter is if the Sun were just a sphere measuring one meter in diameter. If somehow the solar is 1,391,000,000 meters diameter, so its diameter, if it had been a sphere, would be 7.2 × 10⁻¹⁰.

Describe planet.

Celestial bodies that fit the following descriptions are considered planets: It has cleansed the space around and within its orbit because (a) it is orbiting the Sun; (b) it possesses sufficient mass for its soul to outweigh rigid body forces; and (c) it has orbited the Sun.

How far is it?

An object's distance is equal to its overall directionless velocity. Depending of where it started or concluded, distance is really the amount of territory that an object has covered.

Mercury: 0.0035 meters

Venus: 0.0087 meters

Earth: 0.0092 meters

Mars: 0.0049 meters

Jupiter: 0.1028 meters

Saturn: 0.086 meters

Uranus: 0.0367 meters

Neptune: 0.0356 meters

Therefore, you have seen how large Jupiter would be if the Sun were a 1 meter sphere, the other planets distance are described above .

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After seeing how big Jupiter is if the Sun were just a sphere measuring one meter in diameter. If somehow the solar is 1,391,000,000 meters diameter, so its diameter, if it had been a sphere, would be 7.2 × 10⁻¹⁰.

Describe planet:

Planets are celestial bodies that match the following criteria: Because it is circling the Sun, has enough mass for it's own soul to override rigid body forces, and has orbited the Sun, it has cleaned the space in and around its orbit.

How far is it?

The distance between two objects is equal to their combined directionless velocity. Distance is basically the amount of ground that only an object has traveled, depending on where it began and ended.

Mercury: 0.0035 meters

Venus: 0.0087 meters

Earth: 0.0092 meters

Mars: 0.0049 meters

Jupiter: 0.1028 meters

Saturn: 0.086 meters

Uranus: 0.0367 meters

Neptune: 0.0356 meters

Therefore, you have seen how large Jupiter would be if the Sun were a 1 meter sphere, the other planets distance are described above .

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I really don’t get it so if someone could help me that would be great

Answers

Answer:

Explanation:

First establish the POSITIVE direction.  We'll say to the RIGHT is positive, and UP is positive.  All you have to do is add forces in the positive direction and subtract forces in the negative direction.  If your answer is positive, the net force is to the right or up;  if your answer is negative, the net force is to the left or down.

Here are your answers:

25-15-15 = -5N left

84-60-10 = 14N up

75-60-2 = 13N right

25+25-25 -15 = 10N right

44+44-100= -12N down

67-76 = 9N right

Could Aliens 65 Million Light Years Away from Earth See Dinosaurs Alive? If aliens can see the dinosaurs, what problems might there be? If aliens couldn’t see the dinosaurs, why not?

Answers

Answer:Now this question can go ways

Explanation:

1: YES= Because they have super advanced technology and the aliens could fly to earth steal our resources and then experiment on the dinosaurs.

2:NO they did not have enough tech yet to support that much length and they just never look or find earth

ME PERSONALLY I WOULD CHOOSE 1 but, up to you

Write the equation of the line that represents the relationship between the two relative temperature scales degrees Fahrenheit and degrees Celsius. The information below is useful.Water freezes at (0 Celcius degrees, 32 Farenheit degrees)
Water boils at (100 Celcius degrees, 212 Farenheit degrees)

Answers

Celsius (C) scale to its Fahrenheit (F) relation is [tex]F = \frac{9}{5} C + 32[/tex].

The degree Celsius is a temperature unit on the Celsius scale, which is one of two temperature scales employed by the International System of Units (SI) alongside the Kelvin scale. The degree Celsius (symbol: °C) can refer to a certain temperature on the Celsius scale or a unit used to represent the difference or range between two temperatures. It is named after Anders Celsius (1701-1744), a Swedish astronomer who invented a comparable temperature scale in 1742. The measurement was previously known as centigrade, from the Latin centum, which means 100, and gradus, which represents steps, until being changed in 1948 to honour Anders Celsius.

The Fahrenheit scale is a temperature scale that was proposed by scientist Daniel Gabriel Fahrenheit in 1724. The degree Fahrenheit is the unit of measurement. Fahrenheit temperature scale, based on the freezing point of water at 32° and the boiling point of water at 212°, with the distance between the two split into 180 equal parts.

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Twice each lunar month, all year long, these tides occur. Whenever the moon, earth, and sun are aligned, the gravitational pull of the sun ___ to that of the moon causing ___ tides.


A. Adds ; neap


B. Adds ; maximum


C. Interferes ; neap


D. Interferes ; minimum


i need the answer now so just the answer and not a long explanation would be great ! thanks !

Answers

These tides occur twice each lunar month throughout the entire year. When the earth, moon, and sun are all in alignment, neap tides are produced by the sun's gravitational pull amplifying that of the moon.

When the sun and moon are both on the same side of the Earth, what tides occur twice a month?

Instead, the phrase refers to the idea of the tide "springing forth." Regardless of the season, spring tides happen twice each lunar month. Neap tides happen when the sun and moon are at right angles to one another, which also happens twice a month.

What are the names of moon tides?

The sun, the form of the ocean, and the moon all have an impact on how much or little the tide rises or falls on Earth. Moon tides are the results of the moon's influence on the Earth's tides. The major subject of this article is moon tides.

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A billiard ball moves with 5 kg⋅m/s of momentum and strikes three other billiard balls. What is the total momentum of the balls after the collision?
3 kg⋅m/s
4 kg⋅m/s
5 kg⋅m/s
6 kg⋅m/s

Answers

The momentum of the billiard balls after the collision is 3 Kgm/s.

What is Momentum?

Simply multiplying the mass of an object by its velocity results in momentum. Additionally, because momentum has both magnitude and direction, it qualifies as a vector quantity.

The formula provides momentum in mathematics;

The other pool balls' velocities would be zero (0) m/s because they were at rest (not experiencing any motion). If we substitute the values, we get: Total forward motion is 3 kg/s.

As a result, the billiard balls' post-collision momentum is 3 Kgm/s.

Therefore, The momentum of the billiard balls after the collision is 3 Kgm/s.

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3. Calculate the mass in the following scenarios (g-9.81 N/kg):
a) 1000 J and 10 m
b) 1250 J and 1 m
d) 1550 J and 0.02 m
e) 8900 J and 215 m
g) 98 J and 59 kg
h) 750 J and 0.75 m
c) 1.25 kJ and 90 m
f) 90 J and 1250 m
i) 5 kJ and 980 m

Answers

Hello there!

Formula: A = F * S = mg * S

So m = A/gS

a) m = 1000 J/(9.81 N/kg * 10 m) ≈ 10.194 kg

b) m = 1250 J/(9.81 N/kg * 1 m) ≈ 127.41 kg

d) m = 1000 J/(9.81 N/kg * 10 m) ≈ 7900.1 kg

e) m = 8900 J/(9.81 N/kg * 215 m) ≈ 4.22 kg

g) m = 98 J/(9.81 N/kg * 59m) ≈ 0.17 kg

h) m = 750 J/(9.81 N/kg * 0.75 m) ≈ 101.94 kg

c) m = 1.25 kJ/(9.81 N/kg * 90 m) = 1250 J/(9.81 N/kg * 90 m) ≈ 1.42 kg

f) m = 90 J/(9.81 N/kg * 1250 m) ≈ 0.007339 kg = 7.339 g

i) m = 5 kJ/(9.81 N/kg * 980 m) = 5000 J/(9.81 N/kg * 980 m) ≈ 0.52 kg

In the definition of weight, W = mg, the mass m refers to an inertial mass.
True or false

Answers

Answer:

True

Explanation:

In the definition of weight, W = mg, the mass m refers to an inertial mass.

What happens to a material when energy is transferred to it?

Answers

When labor is done, energy is transferred from the agent to the object, resulting in a change in the motion of the object (more specifically, a change in the object's kinetic energy).

Energy cannot be generated or destroyed, but it may be moved from one form to another. Energy may be altered in a variety of ways, such as when potential energy becomes kinetic energy or when one thing moves another.

Thermal energy is related to a system's internal energy because of its temperature. When a substance is heated, its temperature rises because its molecules begin to move faster, gaining thermal energy through heat transfer. Conduction, convection, and radiation are the three methods through which thermal energy is transferred.

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A negative charge of -0. 0005 C exerts an attractive force of 9. 0 N on w second charge that is 10 m away. What is the magnitude of the second charge?

Answers

The second charge is 0.0002c in size. For a negative charge of -0. 0005 C, a second charge that is 10 metres away experiences an attracting force of 9.0 N.

In science, the issue of magnitude is undoubtedly of utmost significance. Magnitude typically refers to a size or a distance. We can relate magnitude to the movement by comparing the size and motion speed of the thing. A force in physics is an effect that has the power to alter an object's motion. A force can cause an object with mass to change its velocity, or accelerate (for example, moving from a condition of rest).

q2 = 9*(10)^2/(9*10^9*0.0005)

q2 = 0.0002C

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30kg Michaela is swinging on a swing. Her total mechanical energy is 600 J. At what height will she be when she has a velocity of 2 m/s?

Please show all work!
40 points!!

Answers

Answer:

1.84 m

Explanation:

ME = KE + PE = 1/2mv² + mgh

600 J = 1/2(30 kg)(2 m/s)² + (30 kg)(9.8 m/s²)h

Solve for h:

600 J = 60 J + (294 kg·m/s²)h

h = 540J/294kg·m/s² = 1.84 m

Runner A is initially 2.0 mi west of a flagpole and is running with a constant velocity of 8.0 mi/h due east. Runner B is initially 9.0 mi east of the flagpole and is running with a constant velocity of 4.0 mi/h due west. How far are the runners from the flagpole when they meet?

Answers

The definition of constant velocity is the speed of a moving object that doesn't change over time. The system travelling at a constant speed is subject to zero net acceleration.

What distinguishes instantaneous velocity from average velocity?

In contrast to instantaneous velocity, which is determined by slope of tangent line, average speed is defined as the shift in location (or displacement) during the course of transit.

Which of the four main claims about how a body can accelerate even when it has no velocity is untrue?

Speed is the measure of velocity in magnitude. As a result, it is impossible to have two objects moving at the same velocity. The right response is therefore option A.

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What environmental factor can influence natural selection and decrease genetic diversity?

Answers

The genetic and chemical variety of plant populations is influenced by environmental factors such as soil nutrients, temperature, water availability, and light intensity.

How may the environment impact genetic diversity?

Sometimes a gene's DNA sequence or degree of activity is altered by the environment. Both of these effects have the capacity to change the proteins that a gene generates, which then affects traits. Some harmful environmental factors can change the nucleotide sequence of a gene. UV rays, for example, can harm DNA strands.

How is natural selection impacted by environmental factors?

Successful competitors have a higher chance of surviving. Individual creatures with specific qualities are more likely to survive under specific environmental conditions than those without these traits.

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