what is Adolescence??​

Answer:

A

Explanation:

The diameter of the copper wire must be at least 2.2 mm to carry a maximum current of 40 A and produce no more than 1.4 W of heat per meter of length.

The diameter of the copper wire may be estimated using the power dissipation formula, P = I²R, where P denotes power, I denotes current, and R denotes resistance. In this situation, we want to keep the heat produced to a maximum of 1.4 W/m.

We may use the resistance of a wire formula, R =ρL/A, to estimate the resistance per unit length, where R is the resistance, ρ is the resistivity of copper, L is the length of the wire, and A is the cross-sectional area of the wire.

We obtain A = ρL/(Rmax) when we solve for A, where Rmax is the maximum resistance we wish to tolerate. Substituting the given values, we get

A = (1.68 × 10^-8 Ωm × 1 m)/(1.4 W/m × 40 A)

A = 3.8 × 10^-6 m^2.

The diameter of the wire can be calculated using the formula A = πd^2/4, where d is the diameter. Solving for d, we get

d = √(4A/π)

= √(4 × 3.8 × 10^-6 m^2/π) ≈ 0.0022 m or 2.2 mm.

Therefore, the diameter of the copper wire must be at least 2.2 mm to carry a maximum current of 40 A and produce no more than 1.4 W of heat per meter of length.

Learn more about Resistivity:

https://brainly.com/question/13735984

#SPJ4

The situation in which the object with greater kinetic energy can be identified is when the wildlife keeper and the rabbit are both in motion, and their velocities and masses are known. The object with greater kinetic energy would be the one with a higher mass and/or a higher velocity.

Kinetic energy is given by the equation KE = (1/2)mv^2, where m is the mass and v is the velocity of an object. In this scenario, if both the wildlife keeper and the rabbit are in motion, and their masses and velocities are known, we can calculate their respective kinetic energies using the equation. The object with the greater kinetic energy will have a larger product of mass and velocity, indicating higher energy of motion. Therefore, by comparing the calculated values, we can identify the object with greater kinetic energy.

learn more about energy here:

https://brainly.com/question/29153082

#SPJ11

Absolutely zero (0 K) mostly on Kelvin scale seems to be the temperatures at which the gas's volume is zero. the lowest temperature on any scale. So, -273.15 oC is the Kelvin scale's zero.

Since these measurements do not begin at zero, a movement in Celsius or Degrees fahrenheit is not intrinsically linked to angular momentum or volume. Also because Kelvin scale is a temperature t scale that correlates perfectly with kinetic energy and volume, scientists utilize it.

The Celsius scale and the Kelvin scale are connected. Since there is a 100 degree difference in between water's freezing and boiling temperatures of water, the kelvin scale is equivalent to that of the Celsius scale.

To know more about kelvin scale visit:

https://brainly.com/question/13290721

#SPJ4

Label the rows as the electron energy levels:

The rows of the periodic table are also known as periods. There are seven periods, and each period corresponds to a particular energy level. You can label them from 1 to 7, starting from the top row.

Label the number of valence electrons in Columns 1, 2, and 13-18:

Columns 1 and 2 are the s-block elements, and they have 1 and 2 valence electrons, respectively. Columns 13-18 are the p-block elements, and they have 3 to 8 valence electrons, respectively. You can label the number of valence electrons in each column.

Label the metals, semi-metals, and non-metals using different colors:

Metals are on the left side of the periodic table, semi-metals are in the middle, and non-metals are on the right side. You can use different colors to label them without obscuring any of the information about different elements.

Label the ion charges for elements in the first 3 rows:

Elements in the first 3 rows of the periodic table have predictable ion charges. The alkali metals (Group 1) have a charge of +1, the alkaline earth metals (Group 2) have a charge of +2, and the elements in Group 13 have a charge of +3. For Groups 15, 16, and 17, the charges are -3, -2, and -1, respectively. The noble gases (Group 18) are unreactive and do not form ions. You can write these charges for each element in their respective positions.

Label the trends for atomic size, ionization energy, and electron affinity:

Atomic size generally decreases from left to right across a period and increases from top to bottom within a group. Ionization energy generally increases from left to right across a period and increases from bottom to top within a group. Electron affinity generally increases from left to right across a period and becomes less negative from top to bottom within a group. You can label these trends on your periodic table as well.

learn more about electron energy levels: https://brainly.com/question/28101665

#SPJ1

The tension in the first rope, T1, is 805 N.

The tension in the second rope, T2, is 805 N.

(a) The tension in the first rope, T1, can be calculated by balancing the forces acting on the person in the vertical direction. The weight of the person, mg, acts downwards, and the tension in the rope, T1, acts upwards. Therefore:

T1 = mg

where m is the mass of the person and g is the acceleration due to gravity. Substituting the given values:

T1 = (82.0 kg)(9.81 m/s²) = 805 N

Therefore, the tension in the first rope, T1, is 805 N.

(b) The tension in the second rope, T2, can be calculated by balancing the forces acting on the person in the horizontal direction. The tension in the first rope, T1, acts to the left, and the tension in the second rope, T2, acts to the right. Therefore:

T2 = T1

Substituting the value of T1 obtained in part (a):

T2 = 805 N

Therefore, the tension in the second rope, T2, is 805 N.

Learn more about Tension:

https://brainly.com/question/24994188
#SPJ4

Answer:

2nd bscause there is a reaction

Answer:

increase distance

Explanation:

Inclined planes make it easier to move objects to a higher elevation. The sloping surface of the inclined plane supports part of the weight of the object as it moves up the slope. As a result, it takes less force to move the object uphill.

Answer:

Hello your answer would be increase of distance

Explanation:

I know that because than you would have to go upward with the object.

Energy released ,

\( = 3.789 \times {10}^{ - 12} \) J

Both have temperature differences due to differences in their heat capacities and thermal conductivities.

There is a temperature difference between sand and water because they have different heat capacities and thermal conductivities.

Water has a higher heat capacity, meaning it can absorb more heat before its temperature increases, while sand has a lower heat capacity.

Additionally, water has a higher thermal conductivity, meaning it can transfer heat more efficiently than sand. These differences in thermal properties cause sand and water to heat up and cool down at different rates, resulting in temperature differences between them.

More on heat capacity can be found here: https://brainly.com/question/28302909

#SPJ1

Answer:

False

Explanation:

To find the current in the resistor, we can use Ohm's Law and the concept of equivalent resistance. Thus, option A is correct.

First, let's calculate the equivalent resistance of the three cells connected in parallel. When resistors are connected in parallel, the reciprocal of the equivalent resistance is equal to the sum of the reciprocals of the individual resistances:

1/Req = 1/R1 + 1/R2 + 1/R3

Given that R1 = R2 = R3 = 22 Ω (internal resistance of each cell), we can substitute the values:

1/Req = 1/22 + 1/22 + 1/22

1/Req = 3/22

Taking the reciprocal of both sides, we find:

Req = 22/3 Ω

Now we can use Ohm's Law to calculate the current (I) in the resistor. Ohm's Law states that the current flowing through a resistor is equal to the voltage across it divided by its resistance:

I = V/R

Given that V = 1.1 V (emf of each cell) and R = 32 Ω (resistance), we can substitute the values:

I = 1.1/32

Calculating this value, we find:

I ≈ 0.034375 A

Therefore, the current in the resistor is approximately 0.034375 A.

Learn more about current on:

https://brainly.com/question/15141911

#SPJ1

¡Hello!

Topic: Electrostatic

For calculate electric force, we can apllicate formula:

                                                \(\boxed{\boxed{\bold{F = k * \frac{q*q'}{r^{2} } } } }\)

\(\sqrt{\) F = Electric Force

\(\sqrt{\) k = Coulomb Constant = 9x10^9

\(\sqrt{\) q = Charges = 1 C

\(\sqrt{\) r = Distance = 3000 m

Let's replace according the information, and let's resolve it:

F = 9x10^9 * (1 * 1) / 3000²

F = 9x10^9 * 1 / 9000000

F = 9x10^9 * 1.1111111e-7

F = 1000 N

Result:

The electric force is of 1000 N

Good luck

The magnitude of the momentum of the combined object after the collision is 5mv. So the correct option is A) 5mv.

To solve this problem, we can use the principle of conservation of momentum. The total momentum before the collision should be equal to the total momentum after the collision, assuming no external forces are acting on the system.

Let's break down the velocities into their respective components:

Object 1:

Mass (m)

Velocity toward the east: 3v

Velocity components: 3v toward the east and 0v toward the north (since it's only moving horizontally)

Object 2:

Mass (2m)

Velocity toward the north: 2v

Velocity components: 0v toward the east (since it's only moving vertically) and 2v toward the north

To find the momentum of the combined object after the collision, we need to add the momentum vectors of the two objects.

Momentum of object 1 before the collision:

p1 = m * (3v) = 3mv toward the east

Momentum of object 2 before the collision:

p2 = (2m) * (2v) = 4mv toward the north

Now, let's add the momentum vectors:

p_total = p1 + p2

= 3mv (east) + 4mv (north)

Since these vectors are at right angles, we can use the Pythagorean theorem to find the magnitude of the total momentum:

Magnitude of total momentum:

|p_total| = \(\sqrt{3mv)^2 + (4mv)^2)}\)

= \(\sqrt{9m^2v^2 + 16m^2v^2}\)

= \(\sqrt{25m^2v^2}\)

= 5mv

Learn more about momentum: https://brainly.com/question/30677308

#SPJ11

Answer:

18.71 joules

Explanation:

The formula to solve for potential energy is PE = mgh

where m = mass, g = force of gravity, and h = height.

m = 1.11 kg

g = 9.8 m/s^2

h = 1.72 meters

PE = (1.11)(9.8)(1.72)

PE = 18.71016

Therefore, the potential energy of the ball is 18.71 joules.

Answer:

The formula to solve for potential energy is PE = mgh

where m = mass, g = force of gravity, and h = height.

m = 1.11 kg

g = 9.8 m/s^2

h = 1.72 meters

PE = (1.11)(9.8)(1.72)

PE = 18.71016

Therefore, the potential energy of the ball is 18.71 joules.

13.02 meters

Explanation

the work done by the brakes makes the car stops, so the change in energy equals the work done

hence

also, the work done by a force is given by

then, let

replace

therefore, the answer is

13.02 meters

I hope this helps you

The gravitational force from the sun controls the orbit of the moon and the planet besides gravity.

Anything in the universe if has mass, then it is tends to have some gravitational interaction with other objects having some mass.

The moon and the planet interact with each other due to the gravity of the planet. Beside this gravity, one more force that is responsible is the gravitational force due to the sun.

The gravitational force of the sun makes the earth rotate around the sun, and it indeed result in the rotation of the moon around the planet.

To know more about Gravitation, visit,

https://brainly.com/question/557206

#SPJ4

Explanation:

vgfbhhhhhjhbgvbhggy

The correct answer is that a falling object that has reached its terminal speed does not continue to gain acceleration or speed. Therefore option D, neither is correct.

When an object falls and reaches its terminal speed, it means that the object is experiencing a balanced state between the force of gravity pulling it down and the force of air resistance pushing against it.

At terminal speed, these two forces are equal in magnitude but opposite in direction, resulting in a net force of zero.

Since there is no net force acting on the object at terminal speed, the object does not experience any further acceleration. Acceleration is defined as a change in velocity, which requires a nonzero net force.

At terminal speed, the object's velocity remains constant and does not change.

Although the object does not gain any additional acceleration, it also does not gain any additional speed. The terminal speed is the maximum speed that the object can reach while falling through the air. Once the object reaches this speed, it remains constant and does not continue to increase.

Therefore, the correct answer is that a falling object that has reached its terminal speed does not continue to gain acceleration or speed.

Know more about terminal speed:

https://brainly.com/question/33442558

#SPJ4

Answer:

The field will remain the same

Explanation:

This is because electric field given as

E1= kq1/r²

And that of second charge

E² = kq2/r²

Is not affected by the size of the second charge q2

The black body has a surface area of 20.0 cm² and a temperature of 5000 K. The wavelength of a 10.0 cm wave falls in the microwave or radio wave range.

The surface area and temperature of the black body are given as 20.0 cm² and 5000 K, respectively. To determine the nature of a 10.0 cm wave, we need to calculate its wavelength.  

Wavelength is inversely proportional to the temperature and frequency. Since the temperature of the black body is 5000 K, we can assume it emits thermal radiation in the infrared range. The wavelength of a microwave or radio wave typically falls within the range of centimeters to meters.

Therefore, a 10.0 cm wave is in the microwave or radio wave range. This implies that the wave has a longer wavelength and lower frequency compared to visible light, making it suitable for applications such as microwave ovens or radio communication.

Learn more about black body here:

https://brainly.com/question/30708183

#SPJ11

Answer: yes

Explanation: good luck

The magnitude of the force that the object exerts on the child is 100 N.

option C is the correct answer.

Newton's third law of motion states that for every action there is an equal and opposite reaction. In other words, action and reaction are equal and opposite.

Mathematically, Newton's third is given as;

Fa = Fb

where;

If the child exerts 100 N force on the object, the reaction of the object or the upward force exerted on the child by the object is 100 N in opposite direction.

Learn more about Newton's third law of motion here: https://brainly.com/question/25998091

#SPJ1

Answer: 45.4249

Explanation: 12 gallons converted to liters = 45.4249 liters

Answer:45.42

Explanation:

1 Gallon = 3.785 liters

3.785 × 12 = 45.42

~ItsOniiSama<3

Hope this helps

Answer:

1,1 m

Explanation:

Dado que;

coeficiente de fricción = 0,6

sabemos que W = R = mgcos 37 = 3.5Kg * 10m / s ^ 2 * cos37 = 27.95 N

coeficiente de fricción = fuerza / reacción normal (R)

Fuerza = 0.6 * 27.95 N

Fuerza (F) = 16.77 N

Recuerda que F = Ke

dónde;

K = constante de fuerza (15N / m)

e = extensión (lo desconocido)

e = F / K

e = 16,77 N / 15 N / m

e = 1,1 m

Answer:

Speed is solved with time and distance but has no direction

Average velocity is solved with Δx/Δt and has a direction

Answer:

\(T=2.5*10^{-3}s\)

Explanation:

From the question we are told that:

Beat frequency \(F_b=4\)

Frequency \(F=400Hz\)

Generally the equation for Frequency of the violin is mathematically given by

 \(f_v=F_b+F\)

 \(f_v=4+400Hz\)

 \(f_v=404Hz\)

Therefore the period of the violin string oscillations is

 \(T=\frac{1}{f_v}\)

 \(T=\frac{1}{404}\)

 \(T=2.5*10^{-3}s\)

Answer:

B

Explanation:

Answer:

The answer is B

Explanation:

............