when 68.00 j of energy are added to a sample of gallium that is initially at 25.0 ◦c, the temperature rises to 38.0 ◦c. what is the volume of the sample?

The question is incomplete, the complete question is;

The compound magnesium phosphate has the chemical formula Mg3(PO4)2. In this compound, phosphorus and oxygen act together as one charged particle, which is connected to magnesium, the other charged particle. What does the 2 mean in the formula 5Mg3(PO4)2? A. There are two elements in magnesium phosphate. B. There are two molecules of magnesium phosphate. C. There are two magnesium ions in a molecule of magnesium phosphate. D. There are two phosphate ions in a molecule of magnesium phosphate.

Answer:

There are two phosphate ions in a molecule of magnesium phosphate.

Explanation:

The compound magnesium phosphate is an ionic compound. Ionic compounds always consists of two ions, a positive ion and a negative ion.

In this case, the positive ion is Mg^2+ while the negative ion is PO4^3-.

The subscript, 2 after the formula of the phosphate ion means that there are two phosphate ions in each formula unit of magnesium phosphate.

Answer:

Resultant displacement is 29.2 km at north of west

Explanation:

To solve the problem, we have to use the rules of vector addition, resolving first each vector along the x- and y- direction.

Taking east as positive x direction and north as positive y- direction, we have:

- First displacement is 25.5 km east, therefore its components are

- Second displacement is 41.0 km northwest, so its components are

So, the components of the resultant displacement are

And so, the magnitude is calculated using Pythagorean's theorem:

And the direction is given by

Where the angle is measured from the west direction, since Rx is negative.

Answer:the power source

Explanation:

Answer:

A. The power source

Explanation:

Just took the quiz

The constant voltage that needs to be applied to yield this rate is approximately 0.47619 H A/s.

To calculate the constant voltage required to yield a current rate of 150 A over 210 min in a magnet with an inductance of 40 H, we can use the formula V = L × di/dt.

Given:

Inductance (L) = 40 H

Change in current (di) = 150 A

Change in time (dt) = 210 min = 210 × 60 s = 12,600 s

Substituting the values into the formula:

V = 40 H × (150 A / 12,600 s)

Simplifying the expression:

V = 40 × 150 / 12,600 H A/s

V = 0.47619 H A/s

The formula V = L × di/dt represents the relationship between voltage (V), inductance (L), change in current (di), and change in time (dt). By rearranging the formula, we can solve for voltage (V).

Plugging in the given values of inductance, change in current, and change in time, we calculate the constant voltage required. In this case, the result is approximately 0.47619 H A/s.

Therefore, the required constant voltage to achieve this current rate is approximately 0.47619 H A/s.

To know more about voltage, refer here:

https://brainly.com/question/31347497#

#SPJ4

Complete question here:

Magnetic resonance imaging instruments use very large magnets that consist of many turns of superconducting wire. A typical such magnet has What constant voltage needs to be applied to yield this rate? an inductance of 40H. When the magnet is initially Express your answer with the appropriate units. powered up, the current through it must be increased slowly so as not to "quench" the wires out of their superconducting state. One such magnet is specified to have its current increased from 0 A to 150 A over 210 min.

The carbon cycle and the water cycle are different in terms of the substances they involve and the processes they encompass.

The carbon cycle involves the movement of carbon atoms between the atmosphere, living organisms, and the Earth's crust through processes such as photosynthesis, respiration, and fossil fuel combustion. On the other hand, the water cycle, also known as the hydrological cycle, involves the continuous movement of water through evaporation, condensation, precipitation, and runoff, without any change in the composition of water molecules.

While both cycles are essential for maintaining Earth's systems, they differ in terms of the substances involved and the specific processes that occur. The carbon cycle focuses on the cycling of carbon atoms, influencing global climate and long-term carbon storage, whereas the water cycle revolves around the movement of water, ensuring the availability of freshwater resources and sustaining life on the planet. Understanding these cycles helps us comprehend the interconnectedness of natural processes and their impact on the environment.

To know more about carbon cycle and the water cycle click here:

https://brainly.com/question/9243222

#SPJ11

the characteristics of the a 10 L ideal gas vessel filled with it at a pressure of 10 atm and temperature of 300 K. any desired changes in the vessel's volume or pressure. 30L of liquid will be produced at constant pressure when the temperature is 200 k.

That amount of force delivered perpendicularly to an object's surface in relation to its area is known as pressure. Pressure is a force-area relationship; pressure = force area. Pascal is the SI pressure measurement (pa).

The formula for calculating pressure is P = F / A, or force for unit of the surface area. The SI unit in measuring pressure is the pascal, and the sign for pressure in physical science is p. (symbol: Pa). One Newton per sq.m of force exerted perpendicularly on a surface is equal to one pascal.

To know more about pressure visit:

brainly.com/question/29341536

#SPJ4

Answer:

opposite .

Explanation:

Answer: The answer is a) opposite

Explanation: I just completed the USA Test Prep and got a 100! :))

Answer:

t = 12.25 s

Explanation:

First we calculate the time taken by the car during accelerating motion, we use 1st equation of motion:

Vf = Vi + at₁

where,

Vf = Final Velocity = 21 m/s

Vi = Initial Velocity = 0 m/s

a = acceleration = 3 m/s²

t₁ = time taken during acceleration = ?

Therefore,

21 m/s = 0 m/s + (3 m/s²)t₁

t₁ = (21 m/s)/(3 m/s²)

t₁ = 7 s

Now, we use the same equation to find out the time taken during deceleration motion, with following data:

Vf = Final Velocity = 0 m/s

Vi = Initial Velocity = 21 m/s

a = deceleration = -4 m/s²

t₂ = time taken during deceleration = ?

Therefore,

0 m/s = 21 m/s + (-4 m/s²)t₂

t₂ = (-21 m/s)/(-4 m/s²)

t₂ = 5.25 s

Therefore, the total time taken by the car to travel from first stop sign to second stop sign is:

t = t₁ + t₂

t = 7 s + 5.25 s

t = 12.25 s

Answer:

12.25s

Explanation:

When a group decides to use only symmetric encryption by using a KDC (Key Distribution Center), there are certain advantages that come with it. Rather than having every two entity in the system sharing a secret key, the group uses a KDC.

A Key Distribution Center (KDC) is a component of certain computer operating systems that is responsible for managing access control between users and network resources.

The following are the advantages of using a KDC:Key distribution is easier and more efficient: KDC distributes a single symmetric key that can be used by all users in the network to securely encrypt and decrypt messages between them. As a result, KDCs are much more efficient than two entities sharing a secret key. This helps in preventing unauthorized access from any malicious attacker.

For example, if two entities share a secret key and one of them gets compromised by an attacker, then the attacker can easily gain access to all the messages being sent between the two entities. However, if a KDC is used, then the attacker will not be able to gain access to all the messages because the KDC is not a part of the communication channel and the encryption key is only distributed to the entities that require it.

Easier key management: In a large network, it can be very difficult to manage secret keys between two entities, particularly when there are a large number of entities. However, when using a KDC, key management is a lot easier because all the keys are stored and managed centrally.

Therefore, there is less risk of key loss, damage, or duplication. In conclusion, using a KDC for symmetric encryption has significant advantages over two entities sharing a secret key because it provides more secure, efficient, and easier key management.

To know more about Encryption  visit :

https://brainly.com/question/31793873

#SPJ11

2). A greater force will be required to overcome the force of friction and cause the block to start sliding. 3). coefficient of kinetic friction. 4). This allows the car to stop at a shorter distance. 5).  we can reduce the impact of any random errors and get a more accurate value.

2. When the mass on the block is doubled, the angle of repose will increase. This is because the weight of the block will increase and the force of gravity acting on it will also increase. Therefore, a greater force will be required to overcome the force of friction and cause the block to start sliding.
3. It was necessary to tap the block to get it started in section 11 of the lab because the static friction between the block and the surface is greater than the kinetic friction. Tapping the block helps to overcome the static friction and get the block moving, allowing us to measure the coefficient of kinetic friction.
4. Anti-lock brakes can stop a car at a shorter distance than regular brakes because they prevent the wheels from locking up and skidding. When the wheels lock up, the car loses traction and the driver loses control. Anti-lock brakes prevent this by rapidly applying and releasing the brakes, allowing the wheels to continue turning and maintaining traction. This allows the car to stop at a shorter distance.
5. The method that involves taking multiple measurements and calculating an average value would yield a more accurate value for the coefficient of kinetic friction. This is because friction is a complex force that can vary depending on many factors, such as surface roughness, temperature, and pressure. By taking multiple measurements and calculating an average, we can reduce the impact of any random errors and get a more accurate value.

For more such questions on friction

brainly.com/question/25951773

#SPJ11

The distance that the support must be from point A . 1.2010 3 N.

At x = 0, where the x axis is parallel to the diving board, we assume the force acting on the left pedestal to be F1. We define the right pedestal's force as F2 and its location as x=d. W is the diver's weight, which is found at x=L. Setting the total of forces (with upward positive) and the sum of torques (around x2) to zero yields the following two equations:

F 1 +F 2 −W=0

F 1 d+W(L−d)=0

(a) The result of the second equation is F 1 = d L d W = (2.5m 3.0m)

(600N) = 800N, which should be rounded to F 1 = 1.210 3 N. Consequently, F 1 = 1.2010 3 N

(b) F 1 is negative, suggesting a downward force.

To learn more about distance refer to:

https://brainly.com/question/4931057

#SPJ1

Answer:

Explanation: O B. Diffraction

Answer:

4 m/s

Explanation:

momentum = m v

    14           = 3.5  * v

v = 14/3.5 = 4 m/s

a. The shift of the LM curve to the left occurs due to a decrease in the money supply or an increase in the demand for money.

b. Two reasons for a steep IS curve are High Investment Demand and Inflexibility in Investment.

The LM curve shows the various combinations of interest rates and income that bring about the equality of the supply and demand for money.

Below are three reasons for the leftward shift of the LM curve:

1. Decrease in Money Supply: The leftward shift of the LM curve can occur if the money supply decreases. This causes the interest rates to rise because the demand for money is greater than the supply.

2. Increase in Money Demand: An increase in the demand for money can lead to a leftward shift of the LM curve. This happens when people want to hold more money than is available in the economy, and the interest rate rises as a result.

3. Increase in Prices: An increase in prices causes a leftward shift of the LM curve. This is because, at higher prices, people need more money to conduct their transactions, and an increase in the money supply is required to keep the interest rate constant.

Now, moving on to the steep IS curve:

1. High Investment Demand: A steep IS curve may occur if there is high investment demand. This happens when businesses are optimistic about the future and invest more, causing the demand for credit to increase and the interest rates to rise.

2. Inflexibility in Investment: A steep IS curve can also be caused by inflexibility in investment. This occurs when businesses are unwilling to change their level of investment due to economic conditions, and any changes in the interest rates have a significant effect on investment and output levels.

Learn more about investment demand from the given link:

https://brainly.com/question/15121395

#SPJ11

Insulators can be easily charged by friction as the extra electrons gained CANNOT easily escape. Conductors: materials that allow electrons to flow through them easily. Conductors CANNOT be easily charged by friction as the extra electrons gained can easily escape. When negatively charged rod is put near a metal can

Explanation:

Answer:

Atomic nuclei

Explanation:

Gamma rays have a wavelength that ranges from 10 picometers to 100 femtometers, which makes them incredibly small. To put this into perspective, a picometer is one-trillionth of a meter, and a femtometer is one-quadrillionth of a meter. Objects of a similar size to gamma rays include atomic nuclei, which are typically on the order of femtometers in diameter.

Answer:

true

Explanation:

Part A is always accurate. Part B is never correct. Part C is always accurate. Part D is never correct.

Force is a physical quantity that represents an influence on an object to produce a change in its motion. It is a vector quantity, meaning that it has both magnitude and direction. In physics, force is defined as the rate of change of momentum of an object, where momentum is the product of an object's mass and velocity. There are many different types of forces that can act on an object, including gravitational forces, electromagnetic forces, and frictional forces. Forces can cause an object to speed up, slow down, change direction, or remain at rest. The total effect of all the forces acting on an object is described by Newton's second law of motion, which states that the net force acting on an object is equal to its mass times its acceleration (F = ma).

Here,

Part A: Always true

According to Newton's second law of motion (F = ma), the net force acting on an object is equal to its mass times its acceleration. If the net force is nonzero, the acceleration will also be nonzero, and the object will move in the direction of the net force.

Part B: Never true

According to the third law of motion, for every action, there is an equal and opposite reaction. This means that if a net force is acting on an object, it will cause an acceleration in the direction of the net force. The acceleration cannot be at right angles to the net force.

Part C: Always true

Since the net force acting on an object is equal to its mass times its acceleration (F = ma), if the net force is nonzero, the acceleration will also be nonzero, and it will be in the same direction as the net force.

Part D: Never true

If the net force acting on an object is nonzero, it will cause an acceleration in the direction of the net force. The object will not be instantaneously at rest. It may slow down or come to a stop eventually, but it will not be at rest while the net force is acting on it.

Part A is always true. Part B is never true. Part C is always true. Part D is never true.

To know more about force,

https://brainly.com/question/29044739

#SPJ4

Answer:

the answer is C I do believe

Answer:

The earth is exposed much more during the summer the hours of daylight is increased slightly

Explanation:

The rate of change of power with respect to resistance is -25/\(R^2\) watts per ohm (W/Ω).

The power P dissipated by a 5-volt battery across a resistance of R ohms is given by the formula P = (25/R). To find the rate of change of power with respect to resistance, we need to differentiate the power equation with respect to R. Using the power rule for differentiation, we have:

dP/dR = -(25/\(R^2\))

The negative sign indicates that as the resistance increases, the power dissipation decreases, which is consistent with Ohm's law. Therefore, the rate of change of power with respect to resistance is -25/\(R^2\) watts per ohm (W/Ω). This means that for every unit increase in resistance, the power dissipation will change at a rate inversely proportional to the square of the resistance.

This relationship demonstrates the diminishing power dissipation as the resistance increases, highlighting the importance of considering resistance in electronic circuits and systems.

For more such questions on Power.

https://brainly.com/question/1559616#

#SPJ11

Answer:

negative at first.

Explanation:

It's important to disconnect the negative side at first, otherwise you can cause an electrical short if positive is removed first.

a)

Answer:

Using Pythagorean Theorem.

\(F_{R} = \sqrt{Fn^{2} + Fe^{2} } \\\\ F_{R} = \sqrt{52.7^{2} + 91^{2} }\\\\ F_{R} = 105.16N\)

b)

Answer:

\(tan^{-1} \frac{opp}{adj} \\ \\ tan^{-1} \frac{52.7}{91} \\ \\ = 30.08^{o}\)

The resultant force of the two forces which are acting perpendicular to each other is 105.15 N and the direction is 59.91 ° from east.

Force is an external agent acting on a body to change it from the state of motion or rest. If two forces acting on a body and both are applied in the same direction, the resultant force will be the sum of two forces in magnitude.

If the two forces are in opposite directions, then the resultant force will be the substracted value of their magnitude. If one force is to the north and other is to the east, then they are perpendicular to each other.

Hence, to find the resultant force we can use the Pythagoras theorem for right angled triangle. The hypotenuse will be the resultant force.

Resultant force = √ (52.7² + 91² )

                          = 105. 15 N.

The direction of the force = Tan ⁻¹ (91 / 52.7 )

                                           = 59.91 ° from east to north.

Hence, the resultant force is 105.15 N with a direction of 59.91 ° from east.

To find more on resultant force, refer here:

https://brainly.com/question/16380983

#SPJ2

The separation between the objective lens and the specimen when it is in focus is called depth of focus.

The depth of focus, or DOF, is the image-space counterpart of DOF and refers to how, as the sensor is moved, but the object stays in place, the quality of focus changes on the sensor side of the lens. The amount of tip and tilt that can be tolerated between the sensor plane and the lens picture plane is determined by the depth of focus. Tilt has a greater effect on attaining the best focus across the sensor as focus drops because the depth of focus also decreases as focus decreases. Without intentional alignment, there will always be some variance in the orthogonality between the utilized sensor and lens; it illustrates how this problem manifests itself. Problems with depth of focus alone are typically thought to be rare.

Learn more about depth of focus

brainly.com/question/29894371

#SPJ4

Answer:

\(a)uf = 205 + 35 - 11 \\ = 240 - 11 \\ = 229j \\ b)q(heat \: transferd) = 229 - 205 - 11 \\ = 24 - 11 \\ = 13j \\ thank \: you\)

The heat transferred is

a) u f = 205+35-11

      =240-11

      = 229 j

b) q (heat transferred ) = 223-205-11

   = 24-11

   = 13 j

While a thermodynamic gadget passes thru an exchange in the state, a succession of states exceeded could be termed as a course of the device or direction of an alternate country. If the route of change of kingdom is completely distinctive, route of alternate of the nation may be termed as thermodynamic manner.

The technique is described via a direction, which is the non-stop collection of consecutive states via which the machine passes, consisting of the initial nation, the intermediate states, and the very last state. The process has a course along the course.

An asset whose price would not depend upon the course taken to attain that unique price is thought to as kingdom capabilities or point features. In contrast, those capabilities which do depend upon the direction from points are referred to as course features.

Learn more about thermodynamic path here: https://brainly.com/question/13433151

#SPJ2

Answer:

Acceleration.

Explanation:

Hope this helped!

Answer:

sodium chloride

Explanation:

Sodium chloride is an ionic compound. The ions of the sodium chloride compound is sodium ion and chloride ion.  The sodium ion is cation while the chloride ion is an anion. Sodium chloride is a very stable compound because of the mutual attraction of oppositely charged ions.

Answer:

C.

Explanation:

the waves that have the shortest wavelength are gamma rays, and thus they are the most energetic because they must also have the highest frequency.

Specific heat is quantity of heat required to increase the temperature of a substance by one degree celsius.

The formula to calculate heat energy is

Q=mc∆T

We know, Q=mc∆T

Where Q = heat energy

m = mass

c= specific heat capacity

∆T= change in temperature

Thus,

According to above formula

c= Q/m∆T

Here m= 2 kg

∆T= 5 degrees

Q= 2000 joules

c= 2000/2×5

c= 200

Thus, the specific heat capacity of the block is 200.

To know more about specific heat, click on:

brainly.com/question/27991746

#SPJ9