An object has a 2 c charge. the object breaks into two pieces. one piece has a charge of -5 c. what is the exact charge (in c) of the other piece? do not include units with your answer.

Complete Question:

A student has been assigned to measure the density of an irregularly shaped piece of metal.

Which apparatus would be most appropriate to carry out this task?

Group of answer choices

A. ruler, balance

B. beaker, crucible

C. flask, Bunsen burner

D. graduated cylinder, balance

Answer:

D. graduated cylinder, balance

Explanation:

In this scenario, A student has been assigned to measure the density of an irregularly shaped piece of metal.

The apparatus which would be most appropriate to carry out this task is a graduated cylinder and balance.

A graduated cylinder can be defined as a measuring cylinder used for the measurement of the volume of an irregularly shaped piece of metal or liquids. It is typically marked with horizontal lines on its side as units of measurement for volume. The balance is then used to weigh the metals mass.

Answer:

B

Explanation:

The pancreas is responsible for regulating blood sugar, exercise gives it less work to do

Excercise is particularly beneficial for the pancreas because physical activity positively impacts blood sugar, giving the pancreas less work. Correct option is B.

When you engage in physical activity, several things happen that benefit the pancreas:

Increased Insulin Sensitivity: Exercise helps improve the body's sensitivity to insulin. This means that cells become more responsive to the insulin signal, allowing glucose to enter the cells more effectively. This can help prevent insulin resistance, a condition where cells don't respond properly to insulin and blood sugar levels rise.

Improved Blood Sugar Regulation: Exercise can lower blood sugar levels by facilitating the uptake of glucose into cells for energy. This can reduce the burden on the pancreas to produce excess insulin to manage high blood sugar levels.

Reduced Risk of Type 2 Diabetes: Regular physical activity is associated with a reduced risk of developing type 2 diabetes, a condition characterized by impaired blood sugar regulation. By helping maintain healthy blood sugar levels, exercise supports the pancreas in its role of insulin production.

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Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

Experiment 1 Understanding of low voltage electrical apparatus: Purpose of the experiment1) Master the usage of common electrical tools.2) Master the common identification methods of low pressure.3) Master the function of low-voltage electrical apparatus and their correct application. Experiment contents and requirements

The experiment requires observing common low-voltage apparatus and understanding their structure. The following requirements are required:1. Drawing electrical symbols2. Writing text symbols3. Describing the basic working principle and function of low-voltage electrical components that are observed in the experiment report and content for the experiment report, follow this steps:1. Purchase the uniform standard experimental report paper in the academic affairs office.2. Fill in according to the items specified in the test report.3. Draw the electrical symbols and write the text symbols according to the observed low-voltage electrical components.4.

According to the observed low-voltage electrical components, the basic working principle and function are briefly described.

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Answer:

d = 134.11 m

Explanation:

Speed of an airplane, = 600 mph

We need to find the distance moved in 0.5 s (to scan the instruments).

1 mph = 0.44704 m/s

It means,

600 mph = 268.22 m/s

Speed = distance/time

Distance, d = v t

d = 268.22 m/s × 0.5 s

d = 134.11 m

So, the distance moved by airplane is 134.11 m.

The spacetime Using Lorentz transformation equation coordinates in the moving frame are (1303.93 m, 3.01 s).

Given information:

An event has spacetime coordinates (x,t)=1,300 m,3.0 s in reference frame S.What are the spacetime that moves in the negative x - direction at 0.03c?We know that the coordinates of the same event as observed from two different inertial frames are related by the Lorentz transformation equations.

Using Lorentz transformation equation:(x', t') = (γ(x − vt), γ(t − vx/c²))where γ = 1/√(1−v²/c²) represents the Lorentz factor, x is the position in the stationary frame, t is time in the stationary frame, x' is the position in the moving frame, t' is time in the moving frame, v is the relative velocity between the two frames and c is the speed of light in vacuum.We are given,x = 1,300 mt = 3.0 s, v = −0.03c (since the motion is in the negative x direction)∴ γ = 1/√(1−v²/c²) = 1/√(1−0.03²) = 1/0.997

The spacetime coordinates in the moving frame, (x', t') = (γ(x − vt), γ(t − vx/c²))= [1/0.997 (1300 - (-0.03c)(3.0))] m, [1/0.997 (3.0 - (-0.03c)(1300)/c²)] s= (1303.93 m, 3.01 s) [correct to 2 decimal places]

Therefore, the spacetime coordinates in the moving frame are (1303.93 m, 3.01 s).

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"As Earth and the other planets of the solar system cooled, the sun’s energy gradually replaced the heat of planet formation in maintaining their temperatures".

As the solar system cooled, the sun's energy became the primary source of heat for the planets, replacing the heat generated during the process of planet formation. This process allowed the planets to maintain their internal heat and solidify into the solid bodies we observe today. The sun's energy also drives atmospheric and climatic processes, such as the winds and storms on Earth, and it provides the light that allows life to exist on our planet.

The balance between the sun's energy and the internal heat of a planet is crucial for its ability to maintain its environment and support life.

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The distance from the axis of the force applied is 2.05 m.

The distance from the axis of the force applied is calculated as follows;

The formula for torque;

τ = Fr

where;

Another formula for torque is given as;

τ = Iα

where;

τ = (mr²)α

τ = (25 kg x (0.925 m)²) x (1.84 rad/s²)

τ = 39.36 Nm

The distance is calculated as;

r = τ/F

r = ( 39.36 Nm ) / (19.2 N)

r = 2.05 m

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Answer:

635 years old

Explanation:

The light reaching the earth from the sun will travel at a speed called the speed of light, and this has a universal value of 3 × 10⁸ m/s. Bearing this in mind, let us calculate the age of the light reaching the Earth from the sun:

Distance of star from Earth = 6.1 × 10⁸m

Speed of light = 3 × 10⁸ m/s

We have distance and speed, let us calculate the time of travel of the light from the star to the earth.

Distance = speed × time

6.1 × 10⁸ = 3 × 10⁸ × time

\(time = \frac{6.1 \times 10^{18}}{3 \times 10^8}\)

In order to do the division above, we will divide the whole numbers normally, then we will apply the law of indices to the power that says:

Xᵃ ÷ Xᵇ = X⁽ᵃ⁻ᵇ⁾

\(\therefore time = \frac{6.1 \times 10^{18}}{3 \times 10^8}\\= \frac{2.03 \times 10^{(18-8)}}{1} \\= 2.03 \times 10^{10}}\ seconds\)

Next, we are told that there are 3.2 × 10⁷ seconds in a year.

∴ The number of years travelled by the light from the star:

\(3.2\ \times 10^7\ seconds = 1\ year\\1\ second = \frac{1}{3.2\ \times 10^7} \\\therefore 2.03 \times 10^{10}\ seconds = \frac{2.03 \times 10^{10}}{3.2\ \times 10^7}\)

please note that:

2.03 × 10¹⁰ = 20300000000

3.2 × 10⁷ = 32000000

\(\therefore \frac{2.03 \times 10^{10}}{3.2\ \times 10^7}\\= \frac{20300000000}{32000000} \\\\= \frac{20300}{32} \\= 634.347\ years\\\)

The closest answer in the option is 635 years, and we are short of this by some points due probably to approximations in the calculation.

Mass,m = 12 kg

Force,F = 3.2 N

Calculate the acceleration ( a ) .

We know that,

\( \bf \: Force = Mass × Acceleration \)

\( \sf\implies \: 3.2 = 12 \: \times a\)

\( \sf \implies \: a = \dfrac{3.2}{12} \)

\( \sf \implies \: a = \dfrac{32}{12 \times 10} \)

\( \sf \implies \: a \: = \dfrac{8}{3 0} \)

\( \sf \implies \: a = 0.266\)

\( \sf \implies \: a = 0.27 \: m {s}^{ - 2} \: (approx)\)

We are given with the amount of force applied and mass of a cart and we have to find the acceleration of the box.

According to Netwon's 2nd law,

After deriving, we will get that

Plugging the given values to get mass,

➝ 3.2 N = 12 kg × accleration

➝ Accleration = 3.2 / 12 m/s²

➝ Accleration = 0.27 m/s² (approx.)

Thus, the required answer is Option A.

Carry On Learning \(!\)

The position-time graph gives the position of an object at any instant of time. The y-intercept gives the position of the object at the instant when the time is zero. That is, the y-intercept gives the initial position of the object.

Thus the given statement is false.

Energy refers to the ability or capacity to do work. Energy can be of various types as follows:

Kinetic energy is energy possessed by an object because of its motion while potential energy is energy possessed by an object because of its position or its condition.

The law of conservation of energy states that energy cannot be created nor destroyed but can only be transformed i.e. converted from one form to another.

Friction is a force that resists the relative motion or tendency to such motion of two bodies in contact.

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99.6°F is equivalent to 37.6°C.

A temperature unit developed from the SI (International System of Units) is Celsius (symbol: °C).

Prior to the adoption of the metric system, Fahrenheit (symbol: °F) was a commonly used measurement of temperature.

To convert Fahrenheit (°F) to Celsius (°C) we have to first subtract 32 from Fahrenheit and then multiply it by .5556 or 5/9.

We have to convert 99.3 degrees Fahrenheit (°F) to Celsius (°C),

We can use the following formula:

°C = (°F - 32) x 5/9

As per the given information,

°F = 99.6

Substituting the value 99.3 for °F, we get:

°C = (99.6 - 32) x 5/9

= 67.6 x 5/9

= 37.6

Therefore, 99.6°F is equivalent to 37.6°C.

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The decision to purchase an electric vehicle based on the belief that electric vehicles preserve a clean and functioning environment, to which we all have a right, is primarily based on c) ethics.

When an individual chooses to purchase an electric vehicle because they believe it contributes to a clean and functioning environment, their decision is rooted in ethical considerations. Ethics refers to the moral principles and values that guide human behavior and decision-making.

By choosing an electric vehicle, individuals prioritize the environmental impact and seek to reduce their carbon footprint. They may consider the ethical implications of using sustainable transportation options to mitigate climate change, reduce air pollution, and promote a healthier ecosystem for present and future generations.

While policies, supply and demand dynamics, and ecosystem services can influence the adoption and availability of electric vehicles, the decision to purchase one in this context is primarily driven by ethical values and a sense of responsibility towards environmental preservation.

Therefore, (c) the choice to buy an electric vehicle, driven by the belief that it protects a clean environment, stems primarily from ethical considerations related to our collective right to a healthy ecosystem.

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Complete question here:

If you believe that electric vehicles preserve a clean and functioning environment, to which we all have a right, and therefore you purchase an electric vehicle, your decision is based on

a. policy

b. supply and demand.
c.  ethics.
d. ecosystem services.

The graph that corresponds to 0.1 s in one complete cycle is graph D.

option D is the correct answer.

The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.

Also, the period of a wave is the amount of time it takes for a wave to complete one wave cycle or wavelength.

From the given parameter, the coil rotates 10 times in one second. The period of the coil is calculated as;

Period = 1 s / 10

Period = 0.1 s

From the graphs, the only option that has one complete cycle in one second is option D.

Check option D, half cycle is 0.05 s and one full cycle is 0.1 s.

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During a snowball fight, two balls with masses 0.4 kg and 0.6 kg collide head on and form a single mass. Each snowball had an initial velocity of 15 m/s. The speed of the mass, immediately after collision, can be calculated using the Law of Conservation of Momentum.

The Law of Conservation of Momentum states that when two objects collide in an isolated system, the momentum of the system remains constant.. This can be expressed mathematically as: p1 + p2 = p3, where p1 and p2 are the momentums of the two objects before the collision and p3 is the momentum of the combined mass after the collision.

In this case, the momentums of the two objects before the collision are:

p1 = 0.4 kg × 15 m/s = 6 kg · m/s

p2 = 0.6 kg × 15 m/s = 9 kg · m/s

Since the total momentum after the collision is equal to the sum of the momentums before the collision, we can calculate the momentum of the combined mass after the collision, p3, as follows:

p3 = p1 + p2

p3 = 6 kg · m/s + 9 kg · m/s

p3 = 15 kg · m/s

The mass of the combined object is 1 kg, since the masses of the two objects add up to 1 kg. We can now use this to calculate the speed of the combined object after the collision:

Speed = Momentum/Mass

Speed = 15 kg · m/s/1 kg

Speed = 15 m/s

Therefore, the speed of the mass immediately after the collision is 15 m/s.

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Answer:

-Lose extra pounds and watch your waistline. ...

-Exercise regularly. ...

-Eat a healthy diet. ...

-Reduce sodium in your diet. ...

-Limit the amount of alcohol you drink. ...

-Quit smoking. ...

-Cut back on caffeine. ...

-Reduce your stress.

Explanation:

According to special relativity, one can travel at increased rates. However, this is only possible when moving at very high speeds approaching the speed of light. When an object moves at high speeds, the time slows down, and the length of the object appears to be shortened.

These observations are known as time dilation and length contraction. Time dilation refers to the difference in the elapsed time measured by two observers, where one is stationary, and the other is moving at a constant velocity relative to each other. The faster the moving observer, the slower time appears to be for them. Length contraction, on the other hand, refers to the phenomenon where an object appears to be shorter in length when it's moving at high

This effect is more noticeable as the speed of the object approaches the speed of light. As a result, traveling at very high speeds can allow one to cover great distances in less time, which can be used for space exploration and other scientific research. However, it's worth noting that the effects of relativity are only noticeable at very high speeds, which are currently impossible to achieve with our current technology.

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The x-component of the magnetic field produced by these three wires at the origin, Bx(0,0), is equal to zero since the wires are aligned parallel to the z-axis.

The y-component of the magnetic field produced by these three wires at the origin, By(0,0), is equal to μ0/2π times the sum of the currents, or 0.8 x 10-7 T.

The x-component of the force exerted on a one meter length of the wire carrying current I1, Fx(1), is equal to the product of the current, I1, and the y-component of the magnetic field, By(0,0). This is equal to -2.7 x 10-7 N.

The y-component of the force exerted on a one meter length of the wire carrying current I1, Fy(1), is equal to the product of the current, I1, and the x-component of the magnetic field, Bx(0,0). Since Bx(0,0) is equal to zero, the force is equal to zero.

The x-component of the force exerted on a one meter length of the wire carrying current I2, Fx(2), is equal to the product of the current, I2, and the y-component of the magnetic field, By(0,0). This is equal to 0.4 x 10-7 N.

In conclusion, the x-component of the magnetic field produced by these three wires at the origin, Bx(0,0), is equal to zero. The y-component of the magnetic field produced by these three wires at the origin, By(0,0), is equal to 0.8 x 10-7 T.

The x-component of the force exerted on a one meter length of the wire carrying current I1, Fx(1), is equal to -2.7 x 10-7 N. The y-component of the force exerted on a one meter length of the wire carrying current I1, Fy(1), is equal to zero. The x-component of the force exerted on a one meter length of the wire carrying current I2, Fx(2), is equal to 0.4 x 10-7 N.

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b. upthrust. The upward force exerted by a gas or liquid is called upthrust.

This force is generated due to the content loaded and the pressure exerted by the gas or liquid. A fluid's buoyancy, also known as upthrust, opposes the weight of an item that is partially or completely submerged by exerting an upward push. The weight of the fluid on top causes pressure in a fluid column to rise with depth. As a result, the pressure at the bottom of a fluid column is higher than at the top. Similar to this, an object submerged in a fluid experiences greater pressure at its bottom than it does at its top. A net upward force is exerted on the item as a result of the pressure differential.

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Answer:

HI!

Here is ur answer

Magnetic PE depends on both distance and orientation in the magnetic field. ... The magnetic fields are aligned. This makes an attractive force between the two magnets. The farther apart they are, the higher their potential energy.

The relationship between the drag forces on the two plates will depend on the specific values of the fluid velocities and densities, as well as the dimensions of the plates. It is not possible to determine the exact relationship between the drag forces without knowing these values.  

When two fluids flow over two identical flat plates with the same laminar free stream velocity, the drag force on each plate is proportional to the fluid velocity difference between the plate and the free stream, the fluid density, and the surface area of the plate.

In this case, if one fluid is twice as dense as the other, it means that it has a higher mass per unit volume than the other fluid. Therefore, it will experience a higher drag force than the other fluid. However, if the two fluids have the same viscosity, then the drag force on each plate will be proportional to the fluid velocity difference between the plate and the free stream and the surface area of the plate.

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Answer: Force required to 25 joule work when the force causes a displacement of 0.5m is 50N

Explanation: To calculate the work done we use the formula

W=F.s                               (1)

W= work done

F=  force applied               s= displacement

Given, work done W= 25 joules= 25 J

displacement s= 0.5m

∴From equation (1) we get the force required when work is done and displacement is given, that is

F\(=\frac{W}{s}\)                                (2)

∴Force required \(F=\frac{W}{s}= \frac{25J}{0.5m}=50N\)            

(1 J is the work done by a force of 1 N acting over a displacement of 1 m and so 1 J= 1 Nm⇒ 1 N = 1 J/m)

ANS: Force required to do 25 J work when a force causes displacement of 0.5m = 50 N

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Answer: D. Increasing in randomness.

Explanation: The concept related to this change is entropy. Entropy is a measure of the randomness or disorder in a system. According to the second law of thermodynamics, the entropy of an isolated system tends to increase over time. This means that natural processes often lead to an increase in randomness or disorder.

For example, imagine a container of gas molecules. Initially, the molecules may be confined to one side of the container, creating a region of higher concentration. However, over time, the gas molecules will naturally spread out and become more evenly distributed throughout the container. This increase in randomness or disorder corresponds to an increase in entropy.

Answer:D. Watching the left-over dirt from a comet burn up by friction as the pieces hit the Earth's atmosphere

Explanation: A meteor shower is giant rocks moving across the sky

There must be an invitation for d. watching the left-over dirt from a comet burn up by friction as the pieces hit the Earth's atmosphere

Meteor showers occur when dust or particles from asteroids or comets enter Earth's atmosphere at very high speed. When they hit the atmosphere, meteors rub against air particles and create friction, heating the meteors. The heat vaporizes most meteors, creating what we call shooting stars

hence correct option will be D) Watching the left-over dirt from a comet burn up by friction as the pieces hit the Earth's atmosphere

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Answer:

The differences that will be observed are;

1) The Sun will become faint and will no longer be yellow but rather appear white and will no longer be visible (become invisible) by unassisted vision as we can see the Sun today

2) The size of the Sun will shrink to a size comparable to the size of the Earth

3) The Sun will cool down and will no longer radiate as much heat

4) The nuclear reactions that generate energy on the Sun's will seize and the and the heat from the Sun will be from residual thermal energy

5) The core, which is the hottest part of the Sun will no longer be hydrogen but carbon and oxygen

Explanation:

Answer:

The answer is . A 46.2g

Answer:

The frequency of a wave is the number of waves that pass by each second, and is measured in Hertz (Hz).

Explanation:

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