In a gm two-mode hybrid electric vehicle, when can the vehicle be powered by electric power alone?

Answer:

Explanation:

electron attraction between electron and nucleus = centripetal force of the orbiting electron

In fact, Bohr model depicts the atom as a nucleus surrounded by electrons in circular orbit around it, similar to the planets around the Sun. The centripetal force that keeps the electrons in circular motion around the nucles is provided by the electrostatic force between the electrons and the nucleus.

Answer:

Fg = G M m / R^2    the gravitational force (M  proton, m electron)

Fe = K e^2 / R^2   the electrical force where K = 9 *10E9 and e = charge

Fe / Fg = K e^2 / (G M m)

Fe / Fg = 9 * 10E9 * (1.6 * 10E-19)^2 / (6.67 * 10E-11 * 1.67 * 10E-27 * 9.11 * 10E-31

9 * 1.6^2 / (6.67 * 1.67 * 9.11) * 10^-29 / 10^-69

= 2.27 * 10E39  for the ratio of the two forces

Answer:If the a2a2 genotype experiences selection against it, then its frequency will decrease in subsequent generations. Assuming the selection is strong enough, the genotype may be eliminated from the population altogether.

In this scenario, q represents the frequency of the a2 allele, and q=1 would mean that the a1 allele has been fixed in the population. This implies that there are no more a2 alleles left in the gene pool, and all individuals are homozygous for the a1 allele.

Therefore, q=1 is an indication of complete fixation of the a1 allele in the population, and the a2 allele has been lost due to selection against the a2a2 genotype.

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Answer:

The answer is

Explanation:

The momentum of an object when given it's mass and velocity can be found by using the formula

From the question

velocity = 2.2 m/s

mass = 72 kg

The momentum is

momentum = 2.2 × 72

We have the final answer as

Hope this helps you

time should you wait between pushes is 2.83 sec.

the question is incomplete, full statement is-

A 24 kg child sits on a 2.0-m-long rope swing. You are going to give the child a small, brief push at regular intervals. If you want to increase the amplitude of her motion as quickly as possible, how much time should you wait between pushes?

In physics, amplitude refers to the greatest displacement or distance that a point on a vibrating body or wave may move relative to its equilibrium location. It is equivalent to the vibration path's half-length.

regular interval - at similarly spaced intervals: having the same interval of time between occurrences From 4 a.m. to midnight, the buses operate at regular intervals. The boards are positioned at regular intervals, with an equal amount of space between each.

The length of swing, l = 2.1 m

The time between the pushes is nothing but the Time period

and is given by the formula,

\(T = 2\pi ( \frac{l}{g} )^{\frac{1}{2} }\)

= 2 * 3.14 ( 2.0/ 9.8 ) ^ (1/2)

= 2.83 sec

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Answer:

\(30 \div 33750 = 0.008888\)

Answer:

yes

Explanation:

In any calculation, we make sure we use all quantity in it simplest s.i unit

Hope this will help

Answer:

It's all about the conduction between the pan and the cookies.

Explanation:

The cookies in the middle of the pan are not going to be cooked as much as the cookies touching both the bottom of the pan and the side of the pan due to the level of heat being given to those outside cookies. Lets try an example:

Lets say you're in a car in the middle of summer. You and your sibling sit on opposite sides of your other sibling, who is sitting in the middle seat. You and your other sibling are pressed up against the door of the car, making you heat up quicker since not only is it hot in the car, the sun is also on you. Meanwhile your other sibling isn't getting as much heat (but is still warm).

I hope this was able to help! There weren't any answers listed, so it may be the following:

- Conduction of heat

- Transfer of heat

- The pan heating up more of the cookie

- The conversion of more heat energy to the outside cookies

Good luck!

The Temperature at a process with ΔH and ΔS become spontaneous is 66.6k

Gibbs free energy  - It can be defined as that can be used to calculate the amount of work done performed by a closed system at constant temperature and pressure.

It's symbol is G.

Gibbs free energy equation is given as

ΔGΔH−TΔS

where

ΔG = Gibbs free energy.

ΔH =  Enthalpy change.

T = Temperature in Kelvin.

ΔS = Entropy change.

ΔH= 20kJ = 20000J

ΔS= 300J/K

if ΔG<0, process is spontaneous

if ΔG>0, process is non spontaneous

if ΔG=0, process is in equilibrium

To find the temperature at which the given reaction becomes spontaneous, the minimum T value for which we obtain a negative value of the Gibbs free energy change is

ΔH−TΔS > 0

T > ΔH/ΔS

We have ΔH=20kJ=20000J

ΔS= 300J/K

T > 20000/300

T> 66.6K

The Temperature at a process with ΔH and ΔS become spontaneous is 66.6k

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Answer:

E' = Qa/4πε[√(a² + z²)]³

Explanation:

Since the non-conducting plate is symmetric, a small charge element dq generates an electric field dE at a distance R from itself and a distance z above the center of the plate. Since the plate is symmetric, we only have the vertical component of the electric field acting at the center so dE' = dEcosθ where θ is the angle between R and the plate.

So, dE' = dEcosθ = dqcosθ/4πεR²

Let σ represent the surface charge density of the plate. So, for a small elemental area dA, dq = σdA.

Substituting this into dE' we have

dE' = σdAcosθ/4πεR²

Also cosθ = a/R where a is half the length of side of the plate of side length, 2a.

So, dE' = σdAa/4πεR³

Also R² = a² + z²

R = √(a² + z²)

So,  dE' = σdAa/4πε[√(a² + z²)]³

Now, dA = dxdy

dE' = σadxdy/4πε[√(a² + z²)]³

So, the total electric field at z is obtain by integrating dE'

E' = ∫dE' = ∫σadxdy/4πε[√(a² + z²)]³ = σa∫dxdy/4πε[√(a² + z²)]³

We integrate dx and dy from -a to a.

So,

E' = σa[2a][2a]/4πε[√(a² + z²)]³

E' = σa³/πε[√(a² + z²)]³

Since the total chare Q = σA where A is the are of the plate. A = (2a)² = 4a²

Q = σA = 4σa²

σ = Q/4a²

substituting σ into E', we have

E' = (Q/4a²)a³/πε[√(a² + z²)]³

E' = Qa/4πε[√(a² + z²)]³

Answer:

F=ma

Explanation:

Force = mass * acceleration

According to Ohm's law: V = IR

The rate of flow of charges will depend on the voltage supplied and the resistance in the wire.

ELECTRIC CHARGE

Current can be defined as the rate of flow of charges. Where charge is the product of current and time. This means that electric charge is proportional to electric current. The current in a conducting wire depends on;

The two factors that can affect the flow of electric charge in the given options are voltage and resistance

Because according to Ohm's law: V = IR

The rate of flow of charges will depend on the voltage supplied and the resistance in the wire.

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Answer:

A. and D.

Explanation: Identifying Factors That Affect Current

Which factors affect the flow of electric charge? Select two options.

[voltage]

ampere X

ohmX

[resistance]

volt X

The asteroid belt exists between the orbits of the planets Mars and Jupiter.

Between Mars and Jupiter's orbits is where the asteroid belt is located. It also has a few small planets and a lot of asteroids. In the past, the asteroid belt between Mars and Jupiter contained planets and their moons. They were wiped out by some sort of disease. The belt of asteroids may contain their fragmented remains. As a result, the asteroids' motion around Jupiter and Mars is accelerated by their combined gravitational pull. Asteroids go by many names, including Ceres, Vesta, Pallas, and Hygiea. Rock fragments from the early solar system are dispersed in orbits around the sun within the main asteroid belt.

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The missing data point is 162 units for Energy when the Amplitude is 9 units.

The mathematical relationship between amplitude and energy of a mechanical wave is given by the equation below:

Energy = k * Amplitude^2

we have that  k is a constant of proportionality.

We will solve for  the missing data point by using the  equation.

We  can find the value of k by using two of the known data points:

k = Energy / Amplitude^2

k = 72 / 6^2 = 72 / 36 = 2

Therefore,  the missing data point:

Energy = k * Amplitude^2 = 2 * 9^2 = 2 * 81 = 162 units

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Answer:

the correxct adnswer is d

Explanation:

lol

The star 51 Pegasi has a planet whose minimum mass is less than Jupiter's.

A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals. The eight planets in the Solar System are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Historically, planets were thought to be divine bodies that governed fate and human affairs.

This statement is accurate because the calculation we performed yielded a minimum mass of 51 Pegasi's planet, mP sin(i), that is less than Jupiter's mass, mJ.
The calculation was done by taking the product of the cube root of the period in seconds divided by the constant 4.19 ✕ 10−10 N ·
m2/kg2, the 2/3 root of the mass of 51 Pegasi, and the semiamplitude, K, of the velocity range.

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Coupling occurs when the energy released by an exergonic reaction is used to drive an endergonic reaction.

2. The ability of the heart, blood, blood vessels, and lungs to supply enough oxygen and necessary fuel to the muscles during long periods of physical activity - g. Cardiorespiratory Endurance.

What are the muscles?

Muscles are specialized tissues in the human body that are responsible for movement, stability, and maintaining posture. There are three types of muscles in the body: skeletal, cardiac, and smooth muscles.

3. The muscle's ability to move a joint through a full range of motion - c. Flexibility

पं - This word is not provided in the question.

4. The ability of a muscle or muscles to repeat a movement many times or hold a position without stopping to rest - a. Muscular Endurance

5. The ability of a muscle or muscles to push or pull with its total force - d. Muscular Strength

An activity that places an additional force against the muscle or muscle group - f. Resistance Training

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The rotational kinetic of the two rotating solid cylinders is 44.2 (r₁²+r₂²). The result is obtained by inserting total inertia value in rotational kinetic equation.

The moment of inertia of a solid cylinder can be expressed as

\(I = \frac{1}{2} mr^{2}\)

Where

If there are two of more cylinders, the total moment of inertia would be

\(I = I_{1} + I_{2} + ...\)

The kinetic energy of a rotating body can be expressed as

\(E_{rot} = \frac{1}{2} I \omega^{2}\)
Where

If given

What is the rotational kinetic energy?

We first calculate the moment of inertia of the two cylinders.

\(I = \frac{1}{2} m_{1} r_{1}^{2} + \frac{1}{2} m_{2}r_{2}^{2}\)

\(I = \frac{1}{2} m r_{1}^{2} + \frac{1}{2} mr_{2}^{2}\)

\(I = \frac{1}{2} m (r_{1}^{2} + r_{2}^{2})\)

\(I = \frac{1}{2} \times 1,25 (r_{1}^{2} + r_{2}^{2})\)

\(I = 0,625 (r_{1}^{2} + r_{2}^{2})\)

Then, the rotational kinetic energy is

\(E_{rot} = \frac{1}{2} I \omega^{2}\)

\(E_{rot} = \frac{1}{2} \times 0,625 (r_{1}^{2} + r_{2}^{2}) \times \omega^{2}\)

\(E_{rot} = \frac{1}{2} \times 0,625 (r_{1}^{2} + r_{2}^{2}) \times 235^{2}\)

\(E_{rot} = 117.5 \times 0.625 (r_{1}^{2} + r_{2}^{2}) \times 235\)

\(E_{rot} = 44.2 (r_{1}^{2} + r_{2}^{2}) Joule\)

Hence, the rotational kinetic energy of the two rotating solid cylinders is 44.2 (r₁²+r₂²).

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The value of the linear coefficient of thermal expansion is : α= 2.841 * 10⁻⁶ (ºC)⁻¹

Li = 0.4m

ΔL = 0.1 mm = 0.0001m

T1 = 30ºC

T2 = 118ºC

ΔT = 88ºC

α =ΔL/(Li*ΔT)

α =0.0001m /(0.4m * 88ºC)

α = 2.841 * 10⁻⁶  (ºC)⁻¹

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Answer:

it is

option A . Tuberculosis ✔

Answer:

23: Acceleration 24:1m/s^2

Explanation:

\(a = (v_f - v_i) /delta(t)\\a=(16-10)/6\\a=6/6\\a=1m/s^2\)

Given that the direction sailboat is north and the distance traveled is d = 10 km

The direction of the wind is southeast and the force is

The sailboat travels the distance in time, t = 1 h

We have to find the work done by the wind and wind's power.

The diagram is shown below

The work done by the wind will be

The power of the wind will be

Let r be the distance between the man and point Q. He applies a torque of

(r i ) × ((-800 N) j ) = ((-800 N) r ) k

pointing "into the page" with magnitude (800 N) r.

Meanwhile, the rope applies a torque of

((3.0 m) i ) × ((500 N) j ) = (1500 N•m) k

pointing out of the "page" with mag. 1500 N•m

The beam is held in place in a horizontal position, so the torques cancel and

(800 N) r = 1500 N•m

r = (1500 N•m)/(800 N) = 1.875 m ≈ 1.9 m

If you drop the same rock from half the height, the acceleration will be 4.9 m/s².

The acceleration of the object dropped from half of the given height is calculated as follows;

h = vt + ¹/₂at²

where;

h = 0 +  ¹/₂at²

h =  ¹/₂at²

2h =  at²

a = 2h/t²

a = (2 x 0.5h)/t²

a = (h)/(t²)

a = (17 m) / (1.86263²)

a = 4.9 m/s²

Thus,  if you drop the same rock from half the height, the acceleration will be 4.9 m/s².

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The gravitational potential energy (GPE) of the nickel will increase as it falls to the ground due to the force of gravity acting on it.

When an object falls, it gains kinetic energy, which is the energy of motion. As an object falls, it gains kinetic energy at the expense of its potential energy.

The amount of GPE gained will be equal to the mass of the nickel multiplied by the acceleration due to gravity and the change in height from the worker's pocket to the ground. Specifically, the change in GPE = 0.005 kg \(* 9.8 m/s^2 * 169\)*  m. As the nickel falls it will accelerate and its kinetic energy will increase as well. The nickel will convert the potential energy into kinetic energy and also will gain velocity as it falls, reaching a terminal velocity.

When the nickel reaches the ground, all of its potential energy will have been converted into kinetic energy.

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Answer:

its C- 20

Explanation:

Given data:

* The weight of the rocket is 1470.39 N.

* The distance traveled by the rocket is 1522.64 m.

* The time taken by the rocket is 2.11 seconds.

Solution:

The velocity of the rocket in terms of the distance and time is,

The mass of the rocket from the weight is,

where g is the acceleration due to gravity,

Substituting the known values,

The kinetic energy of the rocket in terms of mass and velocity of the rocket is,

Thus, the kinetic energy of the rocket is 39.07 MJ.

According to the claim made, the electron moved across a potential difference of 2.84 * 10⁻² V.

Each spot in space has an electric field associated with it when there is charge current in any form. The value of E, often known as the electric field strength, electric field intensity, or just the electric field, expresses the direction and intensity of the electromagnetic field.

Given;

Velocity, v = 10 * 10⁴ m/s = 10⁵ m/s

Potential difference, V = ?

Mass of electron = 9.11 * 10⁻³¹ kg

Charge of electron, q = 1.60 * 10⁻¹⁹C

The KE of an electron is the amount of energy in an electric field.

Thus, qV = 1/2mv²

Therefore, V = mv²/2q

Putting Values,

V = 9.11 * 10⁻³¹ * 10⁵ * 10⁵/2 * 1.6 * 10⁻¹⁹

= 9.11 * 10⁻²¹/3.2 * 10⁻¹⁹

V = 2.84 * 10⁻²

Thus, Potential difference is 2.84 * 10⁻² V

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Answer:

SF4 + 3H2O → H2SO3 + 4HF

Explanation:

I found it