what the energy dynamics dry?

The resistance in the circuit is approximately 9.04 ohms.

First we can use Ohm's law, which states that the voltage (V) across a circuit element is equal to the product of its resistance (R) and the current (I) flowing through it:

V = I x R

Rearranging this equation, we can solve for the resistance:

R = V / I

Where

In the given problem, the voltage is given in millivolts (mV) and the current is given in milliamperes (mA). To use the equation, we need to convert these units to volts and amperes, respectively.

85000 microvolts (μV) = 85 millivolts (mV)

9400 milliamperes (mA) = 9.4 amperes (A)

Substituting these values into the equation, we get:

R = V / I = 85 mV / 9.4 A ≈ 9.04 ohms

Therefore, the resistance in the circuit is approximately 9.04 ohms.

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Respuesta: T2 = 131.04K

Explicación: Dado lo siguiente:

Presión, P1 = 1.5 atm = 1.5 × 760 = 1140 mmHg

Presión, P2 = 1.2 atm = 1.2 × 760 = 912 mmHg

Volumen, V1 = 500cm3 Volumen, V2 = 300cm3

Temperatura, T1 = 273K Temperatura, T2 =?

Usando la fórmula de gas combinada:

P1V1 / T1 = P2V2 / T2

Ingresando nuestros valores:

(1140 × 500) / 273 = (912 × 300) / T2

T2 × (1140 × 500) = 912 × 300 × 273

T2 = 74692800/570000 T2 = 131.04K

The acceleration due to gravity on the surface of the Moon is 1.635 m/s² and on the surface of Venus is 8.8634 m/s².

There is acceleration, gravitational force, and acceleration due to gravity, all three are completely different from each other.

We know that the acceleration of gravity on the moon = 1/6 acceleration of gravity on the Earth

Therefore, the acceleration of gravity on the surface of the moon is given as

= 9.81 / 6

= 1.635 m/s²

b) For any planet (Venus) the acceleration of gravity is given as

g = GM/ R²

G = 6.67 × 10⁻¹¹

M = 4.88 × 10²⁴

R = 6.06 × 10⁶

g = ( 6.67 × 10⁻¹¹)(4.88 × 10²⁴) / (6.06 × 10⁶)²

g = 8.634 m/s²

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The statement, "The Voyager 1 space probe can't change its own motion" is correct and true. The Voyager 1 space probe was launched by NASA in 1977, and since then it has traveled over 14 billion miles away from Earth. It's the most distant spacecraft from Earth.

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Answer:

Gamma rays have the highest energies.

Explanation:

HOPE IT WILL HELP ^_^

Answer:

Gamma rays have the highest frequencies.

Explanation:

The minimal temperatures for cooking, cooling, and reheating food are 75 °C for cooking, 8 °C for cooling, and 165 °F for heating.

As soon as feasible, food should be refrigerated to prevent the growth of micro organisms. This should ideally cool to less than 8 degrees Celsius in 90 minutes. There are various techniques for quickly cooling food.

If at all feasible, cook food until it reaches 75 °C or higher within. The bulk of food-taining bacteria are eliminated at this stage of heat. Use a thermometer to monitor the internal temperatures of the food components as they cook. Cook mince, sausages, entire birds, and meat fillings all the way through.

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The image formed by refraction is at a distance of 120cm behind the lens and its magnification is 4.

The image formation by refraction and magnification of an object in water 30 cm from the vertex of a convex surface made of plexiglass with a radius of curvature of 80 cm can be calculated using the following steps:

1. Determine the object's distance from the lens. Object distance (u) = -30 cm. (negative sign as per the convention of the mirror)

2. Determine the focal length of the lens using the formula:

f = R/2 where, f = focal length of the lens, R = radius of curvature of the lens.

So, f = 80/2 = 40 cm.

3. Use the mirror formula to determine the image distance from the surface:

1/f = 1/v + 1/u where,v = image distance from the surface.

Substituting the given values (with proper sign convention), we get:

(-1/40) = 1/v + (-1/30)

Solving for v, we get:

v = 120 cm.

5. Use the magnification formula to determine the magnification of the image:

m = -(v/u)

where,m = magnification, v = 120 cm, u = 30 cm

Therefore,m = -(120/-30) = 4

Therefore, the image will form at a distance of 120 cm from the lens on the water side of the lens and is magnified by a factor of 4.

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Answer:

P = 981000 [Pa] or 98.1 [kPa]

Explanation:

To calculate the pressure at that depth we can use the following expression that defines the static pressure of a fluid as a function of the density and depth of the body with respect to the surface of the liquid.

\(P=Ro*g*h\)

where:

P = pressure [Pa]

Ro = density of the water = 1000 [kg/m³]

g = gravity acceleration = 9.81 [m/s²]

h = depth = 100 [m]

\(P = 1000*9.81*100\\P = 981000 [Pa]\)

7.11 meters

Explanation

to solve this we need to use this formula:

Step 1

Let

now,replace and calculate

therefore, the answer is

7.11 meters

I hope this helps you

The explanation can be completed by performing the calculations and providing the final numerical value for the average velocity.

To find the car's average velocity between t = 3 and t = 8, we need to calculate the displacement of the car during this time interval and divide it by the total time elapsed.

The displacement of an object can be obtained by integrating its velocity function over the given time interval. In this case, the velocity function is v(t) = 3t^(1/2) + 3. To find the displacement, we integrate v(t) with respect to t:

∫[3 to 8] (3t^(1/2) + 3) dt

Integrating the first term, we get (2/3)t^(3/2), and integrating the second term, we get 3t. Evaluating the integral over the interval [3 to 8]:

[(2/3)(8^(3/2)) + 3(8)] - [(2/3)(3^(3/2)) + 3(3)]

Simplifying this expression, we find the displacement of the car over the interval [3 to 8].

Next, we calculate the average velocity by dividing the displacement by the total time elapsed, which is 8 - 3 = 5 seconds.

Finally, we obtain the average velocity of the car between t = 3 and t = 8 by dividing the displacement by the time:

Average velocity = Displacement / Time

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Technician A is correct.

The ring gear in a differential has a convex shape on the driving side. This convex shape helps distribute the load evenly and improves the contact between the gear teeth, enhancing the durability and performance of the differential.

On the other hand, the coasting side of the ring gear is typically flat or slightly concave to allow for smoother coasting and reduced friction when the vehicle is not under power. Therefore, Technician A's statement is accurate, while Technician B's statement is incorrect.

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Answer: Musical theater is like acting in a musical.

Explanation: Other dance styles don't involve singing.

Answer:

vegetables food, sport sport sport

Explanation:

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To construct an open rectangular box with maximum volume, the dimensions should be such that the length, width, and height are equal.

To find the dimensions that result in a box of maximum volume, we need to consider the relationship between the dimensions and the volume of the box. Let's assume the length of the box is L, the width is W, and the height is H. Since the box is open, it does not have a top surface.

The volume of a rectangular box is given by the formula V = L * W * H. However, in this case, we have a constraint that the material used to construct the box has a fixed amount, so the total surface area of the box must be constant. The surface area of an open rectangular box is given by A = 2LW + LH + WH.

To find the dimensions that maximize the volume, we need to find the critical points of the volume function. By applying the constraint of constant surface area, we can express one of the dimensions in terms of the other two using the surface area formula. Substituting this expression into the volume formula, we obtain a function that depends on two variables. Taking the derivative of this function and setting it to zero, we can solve for the critical points.

By solving the equations, we find that the dimensions resulting in a box of maximum volume are when the length, width, and height are all equal. In other words, the box is a cube. This is because a cube maximizes the volume within the given constraints, as any deviation from equal dimensions would result in a smaller volume.

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Answer:

(a). Work done is the physical quantity which is same for both boys.

(b).Power is the physical quantity which is different for both boys.

The ratio of power of both boys is 2:1

Explanation:

Given that,

Time of boy A= 30 min

Time of boy B = 60 min

(a), We need to find the physical quantity that is same for both boys

Using given that,

We know that,

Work done depends on the force and displacement.

Here, force and displacement is same for both boys.

So, we can say that the work done will be same for both boys.

(b).  We need to find the physical quantity that is different for both boys

Using given that,

We know that,

Power is equal to the work done divided by time.

Time is different for both boys so, the power will be different for both boys.

We need to calculate the ratio of power of both boys

Using formula of power

\(P=\dfrac{W}{t}\)

Put the value into the formula

For boy A,

\(P_{A}=\dfrac{W_{A}}{t_{A}}\)....(I)

For boy B,

\(P_{B}=\dfrac{W_{B}}{t_{B}}\)....(II)

From equation (I) and (II)

\(\dfrac{P_{A}}{P_{B}}=\dfrac{\dfrac{W}{30}}{\dfrac{W}{60}}\)

\(\dfrac{P_{A}}{P_{B}}=\dfrac{60}{30}\)

\(\dfrac{P_{A}}{P_{B}}=\dfrac{2}{1}\)

Hence, (a). Work done is the physical quantity which is same for both boys.

(b).Power is the physical quantity which is different for both boys.

The ratio of power of both boys is 2:1

Answer:

40

Explanation:

because his increasing speed

Answer:

 E_g = m 392 J,      Ek = m 392

Explanation:

Mechanical energy is a very important concept since if the system does not have friction it remains constant

the potential energy of a system is

          E_g = U = m g (y2 - i)

          E_g = m 9.8 (40 -0)

          E_g = m 392 J

The kinetic energy for this system assuming it started from rest

          E_k = K = ½ m v2

how mechanical energy is conserved

         E_g = E_k

         Ek = m 392

Answer:

169ml

Explanation:

Doubling the ISO number effectively doubles camera sensitivity, like opening one stop or increasing gain by 6 dB. The ISO is the level of sensitivity of the camera's sensor to light from the outside environment.

When taking photos in low-light situations, a higher ISO is required. In photographic terminology, doubling the ISO number is known as 'one-stop faster.' As a result, increasing your ISO from 100 to 200 is equivalent to opening up your aperture or increasing your shutter speed by one stop, both of which double the amount of light that reaches the sensor. Furthermore, increasing your ISO may result in an increase in the camera's sensitivity, but it also has a disadvantage, which is an increase in image noise, commonly known as grain. As a result, even if you're taking pictures in low light, you'll want to keep your ISO as low as possible to avoid producing noisy images.

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Answer:

10s

Explanation:

Given parameters:

Initial velocity  = 30cm/s

Acceleration  = 3cm/s²

Unknown:

Time it takes for the car to come to rest  = ?

Solution:

To solve this problem, we apply the right motion equation;

   Our final velocity - 0

So;

       V = U + at

Since the car is slowing down, it will have a negative acceleration

Insert the parameters and solve;

       0 = 30 + (-3) x t

          -30 = -t

              t = 10s

We will have the following:

1. In the first case, we will calculate the normal force:

Then, we will have that the fricion coefficient will be:

So the magnitude of the friccional force when applied horizontally will be of 30.0N.

2. And the magnitude when applied horizontal but the block is on an inclined surface of 60°, we will have that:

So, the friction force when the force is applied, is 15N.

To improve a self-running generator using a magnet and copper wire, some methods include increasing wire turns, using stronger magnets, optimizing coil design, positioning magnets effectively, increasing rotation speed, and using high-conductivity copper wire.

To improve a self-running generator using a magnet and copper wire, here are a few methods:

1. Increase the number of wire turns: By increasing the number of turns in the copper wire coil, the magnetic field passing through the coil is strengthened, resulting in a higher induced voltage and increased generator output.

2. Use stronger magnets: By using magnets with higher magnetic strength, the magnetic field interacting with the copper wire coil will be stronger, leading to a greater induced voltage and improved generator performance.

3. Enhance the design of the coil: Constructing the copper wire coil in a way that maximizes the number of wire turns while maintaining proper spacing and alignment can optimize the interaction between the magnetic field and the coil, resulting in improved efficiency and power generation.

4. Optimize the magnet position and orientation: Positioning the magnets closer to the copper wire coil and aligning them properly can enhance the magnetic field flux density passing through the coil, thereby increasing the induced voltage and improving generator efficiency.

5. Increase the speed of rotation: Rotating the magnet at a higher speed relative to the copper wire coil increases the frequency of the induced voltage, which in turn improves the generator's power output.

6. Utilize high-conductivity copper wire: Choosing copper wire with higher conductivity reduces resistive losses and enhances the efficiency of the generator, resulting in improved overall performance.

It's important to note that achieving a self-running generator that generates more power than it consumes is a complex task and often requires sophisticated engineering and advanced understanding of electrical and magnetic principles. It is crucial to adhere to the laws of thermodynamics and ensure a complete and efficient energy conversion process to achieve sustainable self-running operation.

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Net momentum gained by object due to application of 15N is 150N sec.

Given - Force=15N

time =10 sec

To find - momentum or change in momentum due to application of force.

Concept - We can utilize the concept of Impulse as due to application of force impulse is created that substantiates the role of momentum. Therefore impulse equalizes momentum generated ,

Impulse = Momentum Gained

Mathematically, Impulse =momentum = Force x Time

= 15 x 10

Ans = 150 N sec

Therefore, the momentum will be 150 N

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The acceleration of the eraser is 169.19 m/s².

A body travelling in a circle has centripetal acceleration. Due to the fact that velocity is a vector quantity (i.e., it has both a magnitude and a direction), when a body travels in a circle, its direction is continually changing, which causes a change in velocity, which results in an acceleration.

Given that angular velocity of the eraser: ω = 127 rpm

= 126×2π/60 radian/second

= 13.2 radian/second.

radius of the circle: r = 0.974 meter.

Hence, its centripetal acceleration is = ω²r

= 13.2×13.2×0.974 m/s²

=169.19 m/s².

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In this case, the compression of the spring when the bullet-mass system comes to rest is 1.12 cm.

The initial momentum of the bullet-mass system is given by p = mv.

After the collision, the system comes to rest, so the final momentum is zero.

By the law of conservation of momentum, the initial momentum must equal the final momentum:

mv = 0

Therefore, v = 0, and the bullet-mass system is at rest after the collision.

The kinetic energy of the system before the collision is given by KE = (1/2)mv^2. A

fter the collision, all of this energy is transferred to the spring as potential energy.

The potential energy stored in a spring with spring constant k and compression distance x is given by PE = (1/2)kx^2.

So, we can set the initial kinetic energy equal to the final potential energy:

(1/2)mv^2 = (1/2)kx^2

Solving for x, we get:

x = sqrt((mv^2)/k)

Plugging in the given values for m, v, and k, we get:

x = sqrt((m(5.00e2 m/s)^2)/k) = 1.12e-2 m or 1.12 cm (rounded to 2 decimal points)

Therefore, the compression of the spring when the bullet-mass system comes to rest is 1.12 cm.

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When two strings that have different thicknesses are compared, it will affect only one parameter, and that is wavelength. The rest of the parameters, including wave frequency, wave speed, and tension, will be constant for both strings.The explanation behind this is quite simple.

When we talk about wave frequency, we refer to the number of complete waves that pass by a given point in a certain period of time. When strings vibrate, the number of waves produced is determined by the vibrating source. The wave frequency is independent of the string's physical properties.

Wave speed refers to the speed at which the wave travels through the medium. The wave speed depends only on the medium, in this case, the string. Since both strings are made of the same material, wave speed will remain the same.Tension, on the other hand, is related to the force that is applied to the string to make it vibrate. The amount of tension in the string, however, is not dependent on the string's thickness.

Wavelength is the distance between two consecutive crests or troughs of a wave. The wavelength depends on the wave speed and the frequency. Since wave speed and wave frequency are constant for both strings, only the wavelength will be different if the strings have different thicknesses.

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Answer:

Potential Energy at the greatest point = 37.5 J

Explanation:

Given :

Mass is 750 g

In term of kg :

Mass is 0.75 kg .

Velocity ( v ) = 10 m / sec

We have formula for kinetic energy :

K.E. = 1 / 2 m v²

Putting values now :

K.E. = 1 / 2 × 0.75 × 10 × 10

K.E. = 1 / 2 × 75 J

K.E. = 37.5 J

Since K.E . = P.E.

Thus potential energy of stone is 37.5 J .