Answer:

**Answer:**

P = 31.83 W

**Explanation:**

Our data are,

Magnitude of the force F = 26 N

Radius of the circular path r = 0.26 m

The angle between force and handle °

Time t = 2 s

We know that the formula to find the velocity is given by

Velocity

We know also that the formula to find the power is given by,

In general terms, the efficiency of a system can be thought of as the output per unit input. Which of the expressions is a good mathematical representation of efficiency e of any heat engine? Where, Qh: the absolute value (magnitude) of the heat absorbed from the hot reservoir during one cycle or during some time specified in the problem Qc: the absolute value (magnitude) of the heat delivered to the cold reservoir during one cycle or during some time specified in the problem W: the amount of work done by the engine during one cycle or during some time specified in the problem A) e=QhW B) e=QcQh C) e=QcW D) e=WQh E) e=WQc

The graph to the right shows the change in Canada‘s harvest of Atlantic cod from 1950-2004 what year shows the clearest evidence of a collapse of fishing stocks?A.1965B.1985C.1995D.2005

The Mistuned Piano Strings Two identical piano strings of length 0.800 m are each tuned exactly to 480 Hz. The tension in one of the strings is then increased by 1.0%. If they are now struck, what is the beat frequency between the fundamentals of the two strings? SOLUTION Conceptualize As the tension in one of the strings is changed, its fundamental frequency changes. Therefore, when both strings are played, they will have different frequencies and beats be heard. Categorize We must combine our understanding of the waves model for strings with our new knowledge of beats.

If anyone can help with this, before 8 am eastern time i’ll give you 20$. Thank you

An athlete can exercise by making mechanical waves in ropes. What is themedium of these waves?A. EnergyB. The ropeC. The athleteD. Air

The graph to the right shows the change in Canada‘s harvest of Atlantic cod from 1950-2004 what year shows the clearest evidence of a collapse of fishing stocks?A.1965B.1985C.1995D.2005

The Mistuned Piano Strings Two identical piano strings of length 0.800 m are each tuned exactly to 480 Hz. The tension in one of the strings is then increased by 1.0%. If they are now struck, what is the beat frequency between the fundamentals of the two strings? SOLUTION Conceptualize As the tension in one of the strings is changed, its fundamental frequency changes. Therefore, when both strings are played, they will have different frequencies and beats be heard. Categorize We must combine our understanding of the waves model for strings with our new knowledge of beats.

If anyone can help with this, before 8 am eastern time i’ll give you 20$. Thank you

An athlete can exercise by making mechanical waves in ropes. What is themedium of these waves?A. EnergyB. The ropeC. The athleteD. Air

**Answer:**

**Billow clouds provide a visible signal to aviation interests of potentially dangerous turbulent sky since they indicate instability in air currents.**

**Explanation:**

Billow clouds are created in regions that are not stable in a meteorological sense. They are frequently present in places with air flows, and have marked vertical shear and weak thermal separation and inversion (colder air stays on top of warmer air). Billow clouds are formed when two air currents of varying speeds meet in the atmosphere. They create a stunning sight that looks like rolling ocean waves. Billow clouds have a very short life span of minutes but they provide a visible signal to aviation interests of potentially dangerous turbulent sky since they indicate instability in air currents, which although may not affect us on the ground but is a concern to aircraft pilots. The turbulence due to the Billow wave is the only logical explanation for the loss of 500 m in altitude of the plane.

a.rubber

b.iron

c.copper

d.aluminum

The answer would be rubber because the other 3 are conductors. Plastic, cloth, and wood are also insulators. Hope this helps!

в. BaN

с. Ва2N3

D. Ba2N

The formula for barium nitride is Ba(NO3)2

Part B. What is the thermal energy of the gas?

Part C. 500J of work are done to compress the gas while, in the same process, 2000J of heat energy are transferred from the gas to the environment. Afterward, what is the rms speed of the molecules?

a. The total **translational kinetic energy** of the **gas molecules **is **1672 Joules**.

b. The **thermal energy** of a **gas molecule **is equal to **1672 Joules**.

c. The **rms speed** of the **gas molecules **is equal to **512.83 m/s**.

__Given the following data:__

- Mass of hydrogen gas = 1.3 gram.

- Speed (rms), c = 1600 m/s.

- Work done = 500 Joules.

- Quantity of energy = 2000 Joules.

__Scientific data:__

- Mass of proton = kg.

- Avogadro constant =

a. To calculate the total **translational kinetic energy** of the **gas molecules**:

First of all, we would determine the number of **moles** of **hydrogen gas** contained in **1.3 grams**:

__Note:__**Molar mass** of **hydrogen gas** = 2 g/mol.

**Number of moles** = **0.65 moles**.

Next, we would determine the number of **molecules** in **0.65 moles **of **hydrogen gas**:

__By stoichiometry:__

1 mole = molecules.

0.65 mole = X molecules.

Cross-multiplying, we have:

**X **= = molecules.

Mathematically, **total **translational **kinetic energy** is given by this **formula**:

Substituting the given parameters into the **formula**, we have;

**T** = **1,671.68** ≈ **1672 Joules**.

b. In Science, the **total **translational **kinetic energy **is equal to the **thermal energy** of a **gas molecule**.

Thermal energy = **1672 Joules**.

c. To calculate the **rms speed** of the **gas molecules**:

**Net energy **= **172 Joules**.

__For the __**rms speed**__:__

**c** = **512.83 m/s**.

Read more on **rms speed **here: brainly.com/question/7427089

The total translational kinetic energy and thermal energy of 1.3g of hydrogen gas with rms speed of 1600 m/s is 5.01x10^25 Joules. After work of 500 Joules is done to compress the gas and 2000 Joules of heat energy are transferred out, the kinetic and thermal energy remains the same, thus the rms speed remains largely the same (with a **negligible change** due to roundoff errors).

You're asking about the behavior of a **hydrogen gas** in terms of its kinetic and **thermal energy**, as well as changes in its root mean square (rms) speed as work is done to compress the gas and heat is transferred out of it.

Part A: The total translational **kinetic energy** can be calculated using the formula 1/2*m*v^2, where m is the mass and v is the speed. For hydrogen in monoatomic gas, 1.3g of hydrogen is about 0.65 moles. 1 mole's mass is about 1g, so 0.65 moles would be about 0.65g. Convert this to kilograms: 0.65g = 0.00065kg. To find the individual molecule's kinetic energy, you multiply by Avogadro's number (6.02*10^23) as there are that many molecules in a mole. Therefore, the Total translational kinetic energy = 1/2 * 0.00065 kg * (1600 m/s)^2 * 6.02x10^23 = 5.01x10^25 Joules.

Part B: At equilibrium, the thermal energy of a gas is equal to its kinetic energy, so the thermal energy would also be 5.01x10^25 Joules.

Part C: According to the principle of energy conservation, the final kinetic (and thus, thermal) energy of the gas will be its initial energy plus the work done on it minus the heat transferred out of it. Therefore, the final energy = 5.01x10^25 Joules + 500 Joules - 2000 Joules = 5.01x10^25 Joules. To find the new rms speed, you set this equal to the kinetic energy formula and solve for v. Doing so gets you a modulus change in the root mean square speed. Please note that this involves some simplifying assumptions and may not reflect what would happen in a more complex system.

#SPJ12

**Answer:**

The electric force increases by a factor of 4.

**Explanation:**

The electric force between two charges and separated a distance *d* can be calculated using Coulomb's Law:

where is the Coulomb constant.

If the value of each charge is doubled, then we will have a force between them which is:

So the new force is 4 times larger than the original force.

Doubling the charge on each particle increases the electric force between them by a factor of 4.

The force between two charged particles is given by Coulomb's Law, which states that the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. So, if we denote the electric force as F, the charges as q1 and q2, and the distance as r, we can write Coulomb's law as F = k* q1*q2/r^2, where k is a constant.

Now if you double the charges (q1 and q2 become 2q1 and 2q2), and use these values in the formula, we get Fnew = k*(2q1) *(2q2)/r^2 = 4 * k*q1*q2/r^2 = 4F.

So, by doubling the charge on each particle, the **electric force** between them is multiplied by the **factor** of 4. So, the force increases fourfold.

#SPJ3

A. Consult with a friend and get their feeback

B. Dispute the beliefs by asking if these are true and examining the evidence

C. Seek mental health counseling

D. It is just too hard so let's just forget it.

**Answer:**

i believe the answer is B

**Explanation:**

Seeking the right answer is the best thing to do