Draw a electric circuit powered by 3 cells with a light, a
motor and a resistor that are in parallel, with a switch that turns
all of them on or off, with a voltmeter measuring the voltage of
the 3 cells and an ammeter measuring the current flowing into
the light

Food is any substance consumed to provide nutritional support for an organism.

Food is important because it provides nutrients, these nutrients in turn  provide: energy for activity, growth, and all functions of the body.

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The center of mass velocity [tex]v_{CM}[/tex] of this system of two balls of masses m1 and m2 with velocities v1 and v2 after collision is ( m1 v1 + m2 v2 ) / ( m1 + m2 )

p = m v

p = Momentum

m = Mass

v = Velocity

For ball 1,

m = m1

v = v1

p1 = m1 v1

For ball 2,

m = m2

v = v2

p2 = m2 v2

Center of mass velocity, [tex]v_{CM}[/tex] = Total momentum / Total mass

Total momentum = p1 + p2

Total mass = m1 + m2

[tex]v_{CM}[/tex] = ( p1 + p2 ) / ( m1 + m2 )

[tex]v_{CM}[/tex] = ( m1 v1 + m2 v2 ) / ( m1 + m2 )

Therefore, the center of mass velocity [tex]v_{CM}[/tex] of this system of two balls is

[tex]v_{CM}[/tex] = ( m1 v1 + m2 v2 ) / ( m1 + m2 )

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Explanation:

b. Toward the center of the Earth

Answer:

B rod r is positively charged

If A force of 57.1 N is applied for 0.977 meters then work is done on the object is 55.8J .

Displacement is defined as the shortest distance travelled by the object.

Displacement is defined to be the change in position of an object.

it has both magnitude and direction. it is a vector quantity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.

A spring balance can be used to calculate the Force. Newton is the SI unit of force (N).

mathematically, F=ma

where, F = force

m = mass and a = acceleration

Given,

force Applied is 57.1N .

displacement is 0.977 m.

According to the formula of work done,

work = force × displacement

Work = 57.1N×0.977m

Work = 55.78J

work = 55.8J

Hence, if A force of 57.1 N is applied for 0.977 meters then work is done on the object is 55.8J .

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Answer:

55.8 J

Explanation:

The total distance traveled by the car when accelerating at a rate of 3 m/s² is 74.67 meters.

Acceleration is the rate at which an object's velocity with respect to time changes. Acceleration is a vector quantity. The direction of the net force acting on an object determines the direction of its acceleration.

The car accelerates from 6 m/s to 22 m/s.

Therefore,

The initial velocity of the car, u = 6 m/s

The final velocity of the car, v = 22 m/s

The acceleration of the car, a = 3 m/s²

By using the equation of motion,

v² - u² = 2as

s = ( v² - u² ) / 2a

s = ( 22² - 6² ) / 6

s = ( 484 - 36 ) / 6

s = 448 / 6

s = 74.67 meters

The car travels 74.67 meters while accelerating.

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The static friction force on the box is 25 N.

Static friction is a type of friction force that acts on the body when there is no relative motion between the object and the surface. As a result, even when the body is moving, it can still act. However, there shouldn't be any relative motion.

Weight of box W = mg = 100 N

Static friction coefficient = 0.25

Forces acting on box are I) Weight of box mg downwards, 2) Normal force on box N upwards 3)Friction force fs to the left and 4) Applied force P to the right.

N-mg=0⇒ N = mg

Net force acting on box in the vertical direction is zero,

[tex]f_{s}[/tex] ≤ [tex]\mu_{s}[/tex] N⇒[tex]f_{s}[/tex] ≤ [tex]\mu_{s}[/tex]mg⇒[tex]f_{s,max}[/tex] = [tex]\mu_{s}[/tex]mg

Net force acting on box in the horizontal direction is P - [tex]f_{s}[/tex] = 0⇒P= [tex]f_{s}[/tex] (until the box starts moving)

For the the box to move P = [tex]f_{s,max}[/tex]

P= [tex]\mu_{s}[/tex]mg = 0.25 × 100 = 25 N.

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If all the light passes through a solution without any absorption, then absorbance is zero, and percent transmittance is 100%. If all the light is absorbed, then percent transmittance is zero, and absorption is infinite.

What does a high percent transmittance mean?

A surface will let more light to pass if the % transmittance number is high. Similar to this, if the % transmittance number is low, it indicates that the surface absorbs more light.

If you move the light from a block of semitransparent glass. Let's imagine that the glass surface reflects 30 percent of the light. 70% of the light will attempt to pass through the glass block. However, part of the light will be absorbed by the light molecules. Say there is 35% light. Now the other side of the block will let through the final 35% of the light. It denotes a 35% transmittance for the glass block.

Hence, If all the light is absorbed, then percent transmittance is zero, and absorption is infinite.

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The MOST likely TRUE about a person who has a healthy diet is they avoid all fats and sugars (Option B).

A healthy diet is one that includes macronutrients (i.e. proteins, carbohydrates and lipids or fats) and micronutrients (vitamins and minerals) in a suitable amount. It is well known that fats and sugars may provide calories but they do not contain nutrients and therefore should be avoided in a healthy diet.

Therefore, with this data, we can see that a healthy diet is based on the consumption of foods that contain a suitable amount of macronutrients and micronutrients.

Complete question:

What is MOST likely TRUE about a person who has a healthy diet?

OA. They eat occasional treats.

OB. They avoid all fats and sugars.

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Answer:

option (j) because the particles are tightly packed and it's clear in the pic that it has fixed shape and there is no space to move

Answer:14p +4q-2r

Explanation:

Sum of (10p-r+5p+2q)

10p+5p+2q-r

15p+2q-r

Now subtract( p-2q+r) from (15p+2q-r)

(15p+2q-r) - (p-2q+r)

15p+2q-r-p+2q-r

15p-p+2q+2q-r-r

14p +4q-2r

The answer is 14p +4q-2r

The amount of work that the force do on the block during the displacement is 4950 Joules.

The work done by a body is given by

W = F.S

Where,

W is the work done,

F is the force applied,

S is the displacement.

Work done is a scalar quantity that is found by the dot product of the force and the displacement of the body.

The force applied by the rushing water is given to be exerted is (210N)i-(150N)j

The displacement is given to be (15m)I - (12m)j.

Now, putting all the values,

W = (210i-150j)(15i-12j)

W = 4950 Joules.

So, the work done by the force to move the ice block is 4950 Joules.

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Complete question - A floating ice block is pushed through a displacement vector d= (15 m)i - (12 m)j along a straight embankment by rushing water, which exerts a force vector F = (210 N)i - (150 N)j on the block. How much work does the force do on the block during the displacement?

83.33ms-² is the rocket's acceleration

a = 10,000–5,000/(60)

a=5,000/60

a=83.33ms-²

Fuel and an oxygen supply, known as an oxidizer, are combined and blasted in a combustion chamber of a rocket engine. The combustion process generates hot exhaust, which is directed through a nozzle to accelerate the flow and generate thrust.

Propulsion is the application of a force to modify the velocity of a vehicle, influencing both its speed and direction. This force is commonly referred to as thrust in aeronautical vehicles.

Today, liquid hydrogen is the American space program's hallmark fuel, and it is employed by other countries in the satellite launch sector. Boeing's Delta III and Delta IV now include liquid-oxygen/liquid-hydrogen upper stages, in addition to the Atlas.

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if the dark body's absolute temperature doubles. Power will be released. Consequently, a factor of 16 increase in power radiation will occur.

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Electron has negative charge and proton have positive charge.

Neutrons do not possess any charge.

Thus, the charge of an atom depends on the number of electrons and the number of protons.

The acceleration of the object is obtained as -1 m/s^2.

We have to recall that acceleration would be defined as the rate at which the velocity can be changed at a given time. We should now look  at the formula that could help us to get the acceleration of the object.

a = v - u/t

a = acceleration

v = final velocity

u = initial velocity

t = time taken

Thus we can now be able to correctly carry out the substitution of the values and we have;

a = 2 - 7/5

a = -1 m/s^2

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Answer:lol

Explanation:

Very little energy is dissipated in the thick connecting wires.

Little or no electricity is dissipated within the thick connecting wires.

As greater bulbs are added to the collection circuit the intensity or brightness of the bulbs decreases. The light is dimmer because much less present day flows through every bulb. that is because including more bulbs in a sequence way including extra resistance. In a parallel circuit, the present day flows thru separate branches.

If every other bulb is added to some other department the present day will ought to follow an extra course. but, the battery or generator produces a constant voltage, so the current thru the unique lamp and its brightness remain unchanged. Incandescent bulbs related in parallel skip the identical amount of contemporary and therefore shine equally brightly. getting rid of a bulb does no longer extinguish other bulbs.

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When a battery is used to charge a capacitor, does the battery's total charge get smaller.

A device without an element is referred to as a capacitor. The capacitance of a capacitor is defined as the ratio of the charge stored in either of its conductors to the potential difference between them. It is assumed that an earthed conductor's capacitance will visibly rise when it is moved close to another conductor in order for a capacitor to work. As a result, a capacitor has two plates with equal and opposing charges that are spaced apart from one another.

When a battery is used to charge a capacitor, electrons that will eventually gather on one plate and become negatively charged are given energy. The opposite plate then acquires a positive charge.

Additionally, this electron is not coming from a battery. When a battery is discharged, its energy has been consumed.

Therefore, while charging a capacitor, the battery's overall charge remains constant.

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The initial speed of the ball is 14.08m/s

We are given that,

The height of the building = h = 50m

The distance of land from base = d = 45m

Therefore, for getting the value of the initial speed v , first we have to know the time period of the ball that is thrown from building horizontally, so that taking the equation of motion in term of time and distance, then we can write as,

h = ut + (1/2) at²

Where, h is the height of the building , u is the initial speed that can be taken zero, a is the acceleration due to gravity which can be put as 9.8m/s²

50m = 0 + (1/2) (9.8m/s² )(t²)

(t²) = 10.204 s

t = 3.194 s

Thus , the initial speed of the ball in the horizontal direction can be calculated as,

Speed = distance/time

v = 45m / 3.194s

v = 14.08 m/s

Since, the initial speed of the ball would be 14.08m/s.

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The electric current carried by the lightning strike, given it carries 5.0 coulomb in 0.02 second is 250 A. Details below

We'll begin by writing out the equation relating quantity of electricity, electric current and time. The equation is illustrated below:

Q = It

Where

With the above formula, we can obtain the electric current. Details below

From the question given above, the following data were obtained:

Q = It

5 = I × 0.02

Divide both sides by 0.02

I = 5 / 0.02

I = 250 A

Thus, from the calculation made above, we can draw our conclusion that the electric current carried by the lightning strike is 250 A

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entirely KE type of energy is present when the baseball reaches the apex of the throw.

Motion is created by kinetic energy. Kinetic energy is produced by the players who swing the bat and throw the ball, and it is present in both the swinging bat and the pitched ball.

The ball will only have kinetic energy when it is thrown since the  would be zero (taking reference at the same position). The speed of the ball, or its kinetic energy, diminishes as it rises, but its height, or its potential energy, increases.

The ball's kinetic energy is dwindling and its gravitational potential energy is rising as it ascends. The cannon ball's kinetic energy is zero when it reaches the top of its arc.

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The astronaut's inertia will not change on the moon.

Inertia can be defined as the property of a matter that causes a matter to be at rest or continuous motion in a straight line.

Inertia depends on the mass of an object, the more massive an object is, the greater the inertia and the smaller the mass of an object, the lesser the inertia.

The weight of an object is given as the product of mass and acceleration due to gravity.

W = mg

where;

The mass of the astronaut will be constant, only the weight will change due to difference in the value of acceleration due to gravity.

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The orbital speeds of stars far from the galactic center are surprisingly high.

What is milky way ?

The galaxy that contains our Solar System is known as the Milky Way[b], and its name refers to how it appears to us on Earth: a hazy strip of light in the night sky made up of stars that are too close together to be seen individually. The name Milky Way comes from the Latin route lactea, which is a translation of the Greek o (galaktikos kklos), which means "milky circle"[18][19][20]. From Earth, the Milky Way looks as a band because its disk-shaped structure is seen from the inside. Most astronomers believed that the Milky Way held all of the universe's stars until the early 1920s.

The orbital speeds of stars and gas clouds far from the galactic center are surprisingly high suggesting that these stars and gas clouds are feeling gravitational effects

The name of the galaxy that contains our Solar System, the Milky Way[b], refers to how it appears to us on Earth: a hazy strip of light visible in the night sky made up of stars that are too dim to be seen individually. The phrase "Milky Way" is a translation of the Latin route lactea, from the Greek o (galaktikos kklos), which means "milky circle"[18][19][20]. The Milky Way is seen as a band from Earth because its disk-shaped structure is seen from the inside. In 1610, Galileo Galilei used his telescope to break the band of light into individual stars for the first time. The majority of astronomers believed that the Milky Way held every star in the Universe up until the early 1920s.

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If ocean temperatures are increasing under climate change, then it might alter the carbon cycle and therefore it may have negative outcomes on the biological pump.

The term biological pump makes reference to the mechanism by which inorganic carbon atoms can be fixed into organisms due to photosynthetic processes, which is key to maintaining the homeostasis of the biosphere.

Therefore, with this data, we can see that the increase in ocean temperature may impact on the state of equilibrium of the biosphere by altering the carbon cycle and consequently affecting the biological pump.

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Adjustment of the lens by the ciliary body is accommodation.

The correct option is D.

The lens is stretched and its refractive strength is changed by the zonule, a collective term for the suspensory ligaments that the ciliary bodies anchor. Relaxation of the zonule allows for accommodation for nearby items.

A section of the central portion of the eye's wall. The ring-shaped muscle that modifies the curvature of the lens whenever the eye focuses is part of the ciliary body, which is located behind the iris. Additionally, it creates the transparent liquid that fills the area between the iris and the cornea.

There are muscles, blood vessels, and epithelium in the ciliary body.

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The object's maximum height during projectile motion is 78.4 m.

We need to know about the projectile motion to solve this problem. The projectile motion is known as parabolic motion and the velocity is divided by 2 axes.

vox = vo cosA

voy = vo sinA

where vox is initial velocity of x axis, voy is initial velocity of y axis, vo is initial velocity and A is the angle.

The total time taken during projectile motion is

t = 2(voy)/g

where t is total time and g is the gravitational acceleration (9.8 m/s²)

The maximum height also can be found using this formula

ymax = voy² / 2g

where ymax is the maximum height

From the question above, the given parameters are

A = 30⁰

t = 8 s

Find the initial velocity of y axis

t = 2(voy)/g

8 = 2 . voy / 9.8

voy = 39.2 m/s

Find the maximum object's height

ymax = voy² / 2g

ymax = 39.2² / 2 . 9.8

ymax = 78.4 m

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Reaction distance plus braking equals stopping distance. The published road brake performance tests for almost all contemporary production vehicles show stopping distances from 60 mph that are typically 120 to 140 feet, well under half of the anticipated safety distances.

How does stopping distance at 60 mph get calculated?

The anticipated stopping distance for a car at 60 mph is 73 meters (240 feet), or 18 car lengths overall. This measurement combines the braking distance of 55 meters and the thinking distance of 18 meters.

Your overall stopping distance is at least 268 feet at 50 mph. The total   of the 268 feet is composed of: 55 Feet for Perception. 55 feet for a response.

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The main difference in between magnetized and unmagnetized iron nails is the alignment of the magnetic domains.

What is magnetization?
The density of induced or permanent dipole moments in a specific magnetic material is measured by magnetization, also known as magnetic polarisation. We already know that the magnetic moment, which would be produced by the motion of electrons within atoms, the spin of electrons, or the nuclei, results in magnetization. In addition to any unbalanced magnetic dipole moment that is present due to the motion of the material's electrons, as was previously mentioned, the response of the a material to a external magnetic field determines its net magnetization. We can categorise materials according to their magnetic properties with the aid of the concept of magnetization. We will learn further about magnetization as well as the idea of magnetic intensity in this section.

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