Mass of Sun
2.0 x 10^30 kg

Mass lost each second 4.3 × 10^9kg

Lifetime of the Sun left 5 x 10 ^9years

Calculate the percentage of the Sun's mass that will
be converted to energy in the remainder of its
lifetime.

Percentage of mass converted to energy =

Initial temperature (I.T.) is described in 21 CFR 113.3(l) as the average temperature of the contents of the coldest container to be processed at the start of the thermal processing cycle, as determined following thorough stirring or shaking of the filled and sealed container.

To calculate the final heat of your substance, add the temperature change to the starting point. If your water started off at 24 degrees Celsius, for instance, the end temperature would be 24 + 6, or 30 degrees Celsius. Where the velocity is unknown, one uses the equation: KE=12mv2 K E = 1 2 m v 2 to calculate the initial kinetic energy. The final Potential Energy is calculated using the formula: PE=mgh P E = m g h, where h is the height of 50 meters.

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Answer:

C

Explanation:

A P E X

The process that is the source of all the thermal energy produced by a nuclear reactor is nuclear fission. The correct option is C.

The process by which an atom's nucleus divides into two daughter nuclei in nuclear physics. Fission, the splitting of uranium atoms, is the source of nuclear energy.

This produces heat that creates steam, which a turbine generator uses to produce power. A type of energy emitted by an atom's nucleus, which is composed of protons and neutrons, is known as nuclear energy.

Fission, which occurs when atom nuclei split into several pieces, and fusion, which occurs when nuclei combine, are the two methods by which this type of energy can be created.

Therefore, the correct option is C. Nuclear fission.

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Answer:

I think all will display the same value

Explanation:

Sorry if this is wrong

Answer:

I think it's option a. this is because,it has longer conductivity.

this might be wrong. I am just in jss2 but I read physics

During phase shift, the substance's molecules' average kinetic energy remains constant.

Simply put, molecules move more quickly as kinetic energy rises. Nevertheless, molecules change phases when potential energy rises. The molecule changes phases as a result of an increase in potential energy.

In a phase change, matter moves from one state to another either by gaining energy through heat and entering a more energetic state, or by losing energy through heat and entering a state with lower energy.

The energy supplied during phase change is only used to separate the molecules; none of it is used to boost the kinetic energy of the molecules. Therefore, since the molecules' kinetic energy is constant, its temperature won't increase.

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Answer:

blue

Explanation:

blue is the only color being reflected, meaning it's the only one that will be visible

The question is not complete. The complete question is :

During a certain period of time, the angular position of a rotating object is given by \($\theta =2t^2 +10t+5$\), where θ is in radians and t is in seconds.  Determine the angular position, angular speed, and angular acceleration of the door (a) at t = 0.00 seconds, (b) at t = 3.00 seconds.

Solution :

Given :

Displacement or angular position of the object, \($\theta =2t^2 +10t+5$\)

∴ Angular speed is   \($\omega = \frac{d \theta}{dt}$\)

                                 ω = 10 + 4t

And angular acceleration is \($\alpha = \frac{d \omega}{dt}$\)

                                              α = 4

a). At time, t = 0.00 seconds :

   Angular displacement is \($\theta =2t^2 +10t+5$\)

                                            \($\theta =2(0)^2 +10(0)+5$\)

                                               = 5 rad

  Angular speed is  ω = 10 + 4t

                                 ω = 10 + 4(0)

                                     = 10 rad/s

Angular acceleration is α = 4 \($rad/s^2$\)

b). At time, t = 3.00 seconds :

   Angular displacement is \($\theta =2t^2 +10t+5$\)

                                            \($\theta =2(3)^2 +10(3)+5$\)

                                               = 53 rad

  Angular speed is  ω = 10 + 4t

                                 ω = 10 + 4(3)

                                     = 22 rad/s

Angular acceleration is α = 4 \($rad/s^2$\)

Cell specialization is the disadvantage of multicellular organisms

Hence the correct option is A.

While multicellularity offers several advantages, such as increased size, complexity, and specialization of functions, it also presents some disadvantages.

One of the disadvantages is cell specialization. In multicellular organisms, different cells specialize in specific functions to carry out various tasks within the organism.

However, this specialization comes with a trade-off. Specialized cells may lose the ability to perform certain functions that other cells can perform, limiting their versatility.

Additionally, cell specialization requires a high level of coordination and communication among cells, which can be complex and prone to errors.

Therefore, Cell specialization is the disadvantage of multicellular organisms

Hence the correct option is A.

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When classifying the 36 cells into their individual phases of mitosis ,Inter phase had the highest representation of cells .So option B is correct.

Pro phase is the first phase of mitosis, and it is when the chromosomes condense and become visible. The nuclear envelope breaks down, and the spindle fibers form.

Meta phase is the second phase of mitosis, and it is when the chromosomes line up along the spindle fibers. The chromosomes are then pulled apart by the spindle fibers.

Ana phase is the third phase of mitosis, and it is when the chromosomes are pulled to opposite poles of the cell. The cell then begins to divide.

Telophase is the final phase of mitosis, and it is when the cell divides into two daughter cells. The chromosomes uncoil, and the nuclear envelope reforms.Therefore option B is correct.

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Answer:

The most reasonable explanation is:

Thin wires do not allow as much electricity to flow as thicker wires.

This is because electrical resistance is directly proportional to the length of a wire and inversely proportional to its cross-sectional area (thickness). Thinner wires have less cross-sectional area, so they offer more resistance to the flow of electricity. This causes some of the electrical energy to be converted into heat energy, rather than being used to power the light bulb, resulting in dim illumination.

As James switched to thicker wires, the cross-sectional area of the wire increased, reducing the resistance and allowing more electricity to flow to the light bulb. This caused the bulb to illuminate brighter, as more of the electrical energy was converted into light energy.

The other options presented are not supported by the laws of electricity and are therefore not reasonable explanations.

Answer:

warmer air

Explanation:

the particles are more excited which increases the probability that the particles will bump into each other

Answer / Explanation:

One factor your options depend on is how the data transfer rate you need over that distance. More of the long-range, low-power applications reduce in throughput as the distance increases. For example, the XBee Pro 50mW Series 2.5 operates at 2.4GHz with a range of 1 mile and has a data transfer rate of 250kbps.

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Answer:

magnetic force

Explanation:

because iron is magnetic so magnet is able to attract iton

Answer:

Taking forces along the plane

F cos θ - M g sin θ -100 = M a       net of forces along the plane

F = (M a + M g * .5 + 100) / .866     solving for F

F = (80 * 1.5 + 80 * 9.8 * .5 + 100) / .866 = 707 N

F = 707 N acting along the plane

Fn = F sin θ + M g cos θ       forces acting perpendicular to plane

Fn = 707 * 1/2 + 80 * 9.8 * .866 = 1030 Newtons   forces normal to plane

(this would give a coefficient of friction of 100 / 1030 = .097 = Fn)

During this process, the electric field gets stronger.

Because of the assumption that the distance between the plates is small in comparison to the area of the plates, the electric field in parallel plates is uniform and roughly constant. Due to the interaction of the fields produced by the two plates, the field is roughly zero outside of the plates.

The capacitor's two oppositely charged plates are separated by an electric field that is constant throughout, with the exception of the plate edges. The electric field does not change because the space between the plates is smaller than their combined surface area.

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The one statement that best predicts the unknown temperature is : (C)  less than 20 °C, because the mechanical energy from shaking transforms to thermal energy.

When an object is shaken, mechanical energy is imparted to the system. This mechanical energy is then converted into thermal energy through various processes, such as friction and molecular collisions.

As a result, the temperature of the system increases.

Therefore, if the initial temperature is (C) less than 20 °C, the mechanical energy from shaking will transform into additional thermal energy, causing the temperature to rise and eventually be greater than 20 °C.

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The direction of the force for a negative charge moving downward in a magnetic field pointing to the left is towards the right. This can be determined using the right-hand rule, where the force direction is perpendicular to both the velocity vector and the magnetic field lines.

When a negative charge moves in a magnetic field, it experiences a force that is perpendicular to both the magnetic field lines and the velocity of the charge. In this case, the magnetic field lines are parallel, evenly spaced, and pointing to the left, while the charge moves downwards. By applying the right-hand rule, the direction of the force on the negative charge can be determined, which is towards the right.

This means that the negative charge will experience a force that acts in a direction perpendicular to both its velocity and the magnetic field, and the magnitude of the force will depend on the velocity of the charge and the strength of the magnetic field.

The complete question is

Parallel field lines evenly spaced and all pointing left labeled b. There is a point with a vector down labeled v. What is the direction of the force for a negative charge moving downward in a magnetic field pointing to the left?

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Answer: into the screen

Explanation:

Answer: Microscope is an instrument that is used for observing micro particles, cells, and nanosized particles.

Explanation:

Placing one hand below the stage of the microscope and other hand must be used to hold the arm of the microscope. This facilitates the safety of the microscope as it will provide support to the entire structure of the microscope and also to the lens and mirrors attached to the structure of the microscope. If any of the part get damaged or lost during carrying it will affect the overall functioning of the microscope.

Answer:

wrapping the electrical cord around the arm of the microscope

Explanation:

just took the test

The parts of an experimental investigation that model the weathering of rock by water would involve observing changes in the rocks due to exposure to water, while the parts that model the erosion of rock by water would involve observing how water moves rocks from one location to another.

In order to gather data to support or disprove a causal relationship, experimental investigations entail a process in which a "fair test" is designed and variables are actively manipulated, controlled, and measured. A control group is used in experimental studies that receives no treatment.

Here, the weathering of rock by water can be modeled by exposing rocks to water and observing how they change over time. For example, if you were to place rocks in a container of water and leave them for a few days or weeks, you might observe changes in the rocks due to the effects of water. These changes could include physical weathering etc.

For erosion of rock by water, this can be modeled by observing how water moves rocks from one location to another. For example, if you were to create a miniature stream by running water over a surface with rocks, you could observe how the water moves the rocks downstream and changes their location. This process can also cause physical and chemical weathering.

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Answer: Depth does not classify soils. Soil color and other properties including texture, structure, and consistence are used to distinguish and identify soil layers.

Happy to help! (0.<)

Explanation:

The depth parameter is  does not used to classify the soil in different region. Texture, color and structure are used to characterize the soil type.

The method of classifying soil involves dividing it into groups where the behaviors of the soils within each group are the same under a certain set of physical conditions.

Engineers can use soil classification to comprehend and evaluate a particular soil's performance and determine whether the soil is suitable for particular engineering applications.

The classification of soli include  based on grain size textural classification,  AASHTO classification system,  Unified soil classification system. AASHTO classification system is developed by  Bureau of Public Roads for the classification of soil for the highway subgrade use.

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The current passing through each resistor in the series circuit is 0.2 A or 200 mA.

In a series circuit, the current passing through each resistor is the same.

To find the current through each resistor, we can use Ohm's Law, which states that current (I) is equal to the voltage (V) divided by the resistance (R).

In this case, the total voltage (V) is given as 12 V, and the total resistance (R) is given as 120 ohms.

Since the circuit is in series, the total resistance is the sum of the individual resistances in the circuit. Therefore, if there are two resistors of equal value, each resistor will have a resistance of 60 ohms (120 ohms / 2 resistors).

Using Ohm's Law, the current passing through each resistor can be calculated as:

I = V / R

I = 12 V / 60 ohms

I = 0.2 A or 200 mA

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Answer: 0.2

Explanation:

following newton's law, you can calculate the acceleration of the object by dividing the force by the mass

40 / 200 is 0.2, which is your answer

Answer:

a. The arrow follows a parabolic path

b. As the arrow hits the ground,

Explanation:

a Describe the arrow's trajectory, in particular noting approximately when the arrow has the most deceleration, the most acceleration, and then why the shift begins to happen. Cover all major points in the trajectory from initial shot to final resting place.

This is because, the arrow is a projectile and its path follows a parabolic curve as it goes from initial shot to final resting place.

Its equation of motion is governed by y = ut - 1/2gt² where y = parabolic path, u = initial speed of arrow, t = time and g = acceleration due to gravity.

As the arrow rises, it undergoes the most deceleration. This is because as it rises, its speed decreases until it gets to the peak of its path, where its velocity is momentarily zero.  

Also, as the arrow drops, it undergoes the most acceleration. This is because as it drops from its peak, its speed increases until it gets to the bottom of its path, where its velocity is maximum and given by v = u' - gt where u' = velocity at peak = 0 m/s. So, v = 0 - gt = -gt.

b. When is the arrow moving fastest?

As the arrow hits the ground, its velocity is highest (maximum), so it is fastest at this point.

Answer:

The final temperature is \(29.6^oC\).

Explanation:

When the two masses come in contact, one releases heat and the other absorbs it. The former can be modelled with the equation \(HeatLost = (Mass1 (kg))(c1)(T1-T)\), and the latter by \(HeatGained=(Mass2(kg))(c2)(T-T2)\)

m1=0.15 kg

m2=0.06 kg

T1 = 70 degrees Celsius = 343 K

T2 =  20 degrees Celsius = 293 K

T= Final temperature

c1 = Specific heat capacity of copper

c2 = Specific heat capacity of water

Because there is no heat lost into the surroundings, the heat removed from one substance is the same as the heat gained in the other. Therefore:

\((Mass1)(c1)(T1-T)=(Mass2)(c2)(T-T2)\)

\((0.150)(400)(343-T)=(0.06)(4184)(T-293)\)

\((60)(343-T)=(251.04)(T-293)\)

\(20580-60T=251.04T-73554.72\)

\(-311.04T=-94134.72\)

\(T=302.6 K\)

\(T=29.6^oC\)

Hope this helps! (My apologies if the answer is wrong, it has been a while since I've done this)

We'll begin by obtaining the equivalent of R₂ and R₃.

R = (R₂ × R₃) / (R₂ + R₃)

R = (9 × 3) / (9 + 3)

R = 2.25 Ω

Now, we shall determine the equivalent resistance, Rₜ for the circuit. This is shown below:

Rₜ = R₁ + R

Rₜ = 2 + 2.25

Rₜ = 4.25 Ω

Thus, the value of Rₜ is 4.25 Ω

The total current, Iₜ can be obtained as follow:

Current = Voltage / resistance

Iₜ = 34 / 4.25

Total current (Iₜ) = 8 A

The value of V₁ can be obatined as follow:

V = IₜR₁

V₁ = 8 × 2

V₁ = 16 V

V₂ and V₃ are in parallel connection. Thus we can obtain their values as follow:

V₂ = V₃ = IₜR

V₂ = V₃ = 8 × 2.25

V₂ = V₃ = 18 V

I₁ = V₁ / R₁

I₁ = 16 / 2

current 1 (I₁) = 8 A

I₁ = V₂ / R₂

I₂ = 18 / 9

current 2 (I₂) = 2 A

I₃ = V₃ / R₃

I₃ = 18 / 3

current 3 (I₃) = 6 A

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Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. In other words, the larger the net force acting on an object, the greater its acceleration, and the larger the object's mass, the smaller its acceleration for a given force.

When a weight is placed over a pulley, the net force acting on it is equal to the weight of the object, and the acceleration of the object depends on its mass. However, if the weight over the pulley is not constant, the net force acting on the object changes, which affects its acceleration.

For example, if the weight over the pulley increases, the net force acting on the object also increases, and the object's acceleration increases. Conversely, if the weight over the pulley decreases, the net force acting on the object decreases, and the object's acceleration decreases.

Keeping the weight over the pulley constant ensures that the net force acting on the object remains constant, which allows for accurate and predictable calculations of the object's acceleration. This is especially important in scientific and engineering applications where precise measurements and calculations are necessary.

Therefore, it is important to keep the weight over the pulley constant to ensure that Newton's second law of motion can be applied accurately and consistently.

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Answer:

13.4 m/s^2

Explanation:

40 divided by 3 equals 13.3 repeating.