category ii electric meters are safe for working on which types of circuits

Explanation:

Option B is correct

Athletes are asked to immediately squat to a depth of their choosing and then jump as high as they can in the Countermovement Jump (CMJ), a vertical jump test.

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The odd feature about Mathilde is that it had a different shape. It has all the features like Ida, Eros, and Gaspra. Thus, option D is correct.

Mathilde is a type of metal body present in the asteroid belt having an irregular shape. It is different from other asteroids because of its highly elongated and heavily cratered structure in space. It is estimated that the diameter of the Mathilde is around 50 kilometers.

Mathilde does not have any defined shape and the color is also very distinct. Due to its high carbon nature, it looks like dark black color. This type of asteroid is more prone to collisions.

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Answer:

Option B

"Packets" of electromagnetic energy eject electrons.

Explanation:

A photon is a tiny packet of light. Light as we know is a form of electromagnetic energy. Whenever light is incident on a photoelectric surface, the energy of the light wave gets transferred to the electron, causing it to have enough energy to eject electrons from its surface. The electrons, once ejected, are now free to move about, thus, resulting in the flow of electrical current.

This makes option B the correct answer

[Part A] The average distance (semimajor axis) of a planet or dwarf planet from the Sun is the distance between their centers. The average distance of Pluto from the Sun is about 39.5 astronomical units (AU).

[Part B] In comparison, the average distance of the Earth from the Sun is 1 AU. So, Pluto's average distance from the Sun is about 39.5 times farther away than Earth is.

As for the comparison with the planet in question, I do not have enough information to make a direct comparison. However, we can say that Pluto's average distance is greater than most planets in the solar system, including the one in question.

The average distance of Pluto from the Sun is about 39.5 astronomical units (AU), where 1 AU is the average distance from the Earth to the Sun, approximately 93 million miles or 150 million kilometers. To compare the average distance of the object in question to that of Pluto, you would need to know the semimajor axis of the object and then compare the two values.

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Answer:

Yes you  worked

Explanation:

You may have not seen a good outcome but you did put effort in.

When a force is applied on the car and it doesn't move then it simply means

work wasn't done.

The formula for work is given below:

Work = Force ₓ Displacement

For work to have been done , the applied force must cause the object to

change its position(displacement).

In situations where the force applied doesn't cause a change in position then work can't be calculated. This means no work was done on the car despite the applied force causing him to be tired.

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The weight of the hanging box will weigh the same as the force pulling the block forward, so F = mg = g,a = 1.30 m/s2.

The definition of force of physics states that when an object has mass is pushed or pulled, it alters its velocity. A body's resting its moving status can be changed by an external agent known as force. It has both size and motion.

As a result of interaction with another object, an object feels a push or pull. When two objects interact, there is a force acting on each object. After the encounter, the force between the two objects is no longer felt.

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Answer:

100 yd * 3 ft/yd / 3.281 ft/m = 91.4 m

Check" 91.4 m " 3.281 ft/yd = 299.9 ft = 100 yd

In physics and engineering, a free frame diagram (FBD; also referred to as a force diagram) is a graphical instance used to visualize the applied forces, moments, and ensuing reactions on a frame in a given situation.

A free-body diagram is a sketch of an item of interest with all the surrounding items stripped away and all of the forces acting on the frame shown. The drawing of an unfastened-body diagram is a critical step in the solving of mechanics issues because it helps to visualize all the forces appearing on an unmarried object.

A free-body diagram is a graphic, dematerialized, symbolic representation of the body (structure, element, or segment of an element) wherein all connecting "pieces" have been removed. An FBD is a convenient method to model the structure, structural detail, or phase that is under scrutiny.

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The temperature and pressure inside the container can be determined using the given information. The temperature is found to be 289 K, while the pressure is calculated to be 200 kPa.

In order to calculate the temperature, we can use the equation for the root mean square (rms) speed of gas molecules:

v_rms = √(3kT/m)

where v_rms is the rms speed, k is the Boltzmann constant, T is the temperature, and m is the mass of a neon atom. Rearranging the equation, we have:

T = (m * v_rms^2) / (3k)

Substituting the given values for the rms speed of 660 m/s and the mass of a neon atom, we can calculate the temperature as:

T = (20.18 * (660)^2) / (3 * 1.38 * 10^-23) ≈ 289 K

To calculate the pressure, we can use the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature. Rearranging the equation, we get:

P = (n/V) * R * T

Since we are given the number density, which is the number of atoms per unit volume, we can calculate the number of moles per unit volume:

n/V = number density * (1 mole/Avogadro's number)

Substituting the given values, we have:

P = (5.00 * 10^25 * (1/6.022 * 10^23)) * (8.314) * (289) ≈ 200 kPa

Therefore, the temperature inside the container is approximately 289 K, and the pressure is approximately 200 kPa.

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Answer:

solid

Explanation:

Answer:

In the solid state, the motion of molecules is only vibrational, because solids are very tightly packed together and cannot move other than by vibrating

The energy must be added to the system to move the satellite into a circular orbit with altitude 198 km is 93.6 x 10 ^10 J

This can be calculated with the total energy concept in gravitational system. The total energy of the obital satellite will be

T.E = \(\frac{G*Me*m}{Re+h}\)

where G - gravitational constant

Me is the mass of the earth

m is the mass of the satellite

Re is the radius of earth = 6400km

At height 108Km, the total energy is

T.E1 = GMem (1/(6400+108))

Similarly we can calculate Total energy at height 198 km

T.E2 = GMem (1/(6400+198))

So energy required would be TE1 -TE2

= GMem (1.54 x 10^-4 - 1.515 x 10^-4)

= GMem x (2.5 x 10^-6)

= 6.6 × 10^−11 x 5.972 × 10^24 x 950 x 2.5 x 10^-6

= 93,611.1 x 10 ^7

93.6 x 10 ^10

Hence the energy required would be 93.6 x 10 ^10 J .

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A photon of light with a wavelength of 1.22 10 m interacts with a hydrogen atom that has an electron in the ground state.

The lowest permitted energy level for hydrogen is the ground state, which also has no angular momentum. The most stable state was the 1s atomic orbital, which contained a single electron.

The electron weighs 9.1 10 31 kg (m = 9.1 10 31 kg). We obtain a wavelength of 1010m, or about the size of an atom, from the de Broglie relation. Because of this, we may directly examine the atomic structure of a crystal using electron microscopes.

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The engine of an aircraft propeller delivers an amount of power 171 hp to the propeller at a rotational velocity of 2410 rev/min. This is a false statement.

Power can be defined as the amount of work completed in a given amount of time. Watt (W), which is derived from joules per second (J/s), is the SI unit of power. Horsepower (hp), which is roughly equivalent to 745.7 watts, is a unit of measurement sometimes used to describe the power of motor vehicles and other devices.

With out knowing mass of the propeller, it can't be concluded about its  rotational velocity - no mater how much power is applied on it.

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"You manage to charge one end of an isolated object, but not the other. Then it is an insulator."

In general, metals are excellent conductors, allowing current to travel freely. Insulators are substances that restrict the ease with which current can travel. The majority of non-metal elements, including rubber, plastic, and wood, are insulators. If you've ever plugged something into a wall outlet, you'll observe this.

Yes, rubbing them together will power the insulator. For this reason, anything that loses electrons becomes positively charged, and anything that acquires electrons becomes negatively charged.

Charging by induction is the process of bringing a charged item close to an uncharged object while avoiding physical contact.

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Explanation:

centripetal force is a force that makes a body follow a curved path. for example, twirling,a lasso, cream seperator etc.

A force that causes an objectmoving in a circular path to move out and away from the centres of it's path is centrifugal force. for example,drifting, banked roads, washing machine etc.

Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. for example, stirring batter, stone tied to a string etc

hope its helpfull♡

Velocity and acceleration are vector quantities whereas speed, temperature and age are not.

Vector is a quantity that has both magnitude and direction and is represented by an arrow whose direction is same as that of the quantity and length is proportional to the quantity's magnitude.

Vector has magnitude and direction but it does not have position. Velocity and acceleration both are vector quantities as they have magnitude and direction.

If the speed of an object remains same but direction changes then the object is accelerating. It is important to remember that acceleration and velocity aren't always in the same direction.

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Answer:

the distance that the object is raised above its initial position is 5.625 m.​

Explanation:

Given;

applied effort, E = 15 N

load lifted by the ideal pulley system, L = 16 N

distance moved by the effort, d₁ = 6 m

let the distance moved by the object = d₂

For an ideal machine, the mechanical advantage is equal to the velocity ratio of the machine.

M.A = V.R

\(M.A = \frac{Load}{Effort} = \frac{L}{E} \\\\V.R = \frac{disatnce \ moved \ by \ the \ effort}{disatnce \ moved \ by \ the \ load} = \frac{d_1}{d_2} \\\\For \ ideal \ machine; \ M.A = V.R\\\\\frac{L}{E} = \frac{d_1}{d_2} \\\\d_2 = \frac{E \times d_1}{L} \\\\d_2 = \frac{15 \times 6}{16} \\\\d_2 = 5.625 \ m\)

Therefore, the distance that the object is raised above its initial position is 5.625 m.​

Answer:

33792 feet

Explanation:

1 mile is 5280 feet. 6.4 x 5280 = 33792

Hope this helps you :)

Answer:

The age of the sample will decrease by 1/2 for each half-life that the sample undergoes:

1/2 * 1/2 * 1/2 = 1/8

The data indicates that the sample has undergone 3 half-lives of decay

3 * 5730 = 17190 yrs is the approximate age of the sample

The moon's phase on March 14th would be Waxing Gibbous.
To explain, the lunar cycle is about 29.5 days long, and the phases of the moon change in a predictable pattern during that time. Starting from a New Moon, the moon will progress through the following phases: Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Third Quarter, Waning Crescent, and back to New Moon.

Each phase lasts for about 3.7 days, so if the New Moon was on March 2nd, the moon would be in the Waxing Gibbous phase on March 14th.
Here is the breakdown of the phases and the dates they would fall on based on a New Moon on March 2nd:
- New Moon: March 2nd
- Waxing Crescent: March 5th
- First Quarter: March 9th
- Waxing Gibbous: March 12th
- Full Moon: March 16th
- Waning Gibbous: March 19th
- Third Quarter: March 23rd
- Waning Crescent: March 26th
- New Moon: March 30th
So, based on this information, the moon's phase on March 14th would be Waxing Gibbous.

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Note that when the ball is in the air, the only force acting on it is the downward pull of gravity, so the force of the swing is a red herring.

The ball hits the ground at the same height from which it was hit, so its final velocity will have the same magnitude of 49 m/s, but pointing at an angle of 35° below the horizontal.

Answer:

From the very beginning, the developing cells need oxygen and nutrients. The fetus receives its nutrition from the mother through the placenta and the umbilical cord.

Explanation:

Answer:

In adding up charges, you can ignore the neutrons ... they have no charge

either way.  They're NEUTRal, which is why they're called NEUTRons.

That leaves us with 3 positive protons and 3 negative electrons.

                      +3  -3  =  0 .

The atom as a whole is neutral ... its net charge is zero.

Explanation:if this isn’t right I am sorry

part a: The magnitude of the magnetic field is 1.17 × 10−5 T. part b:  Therefore, the direction of the magnetic field is in the xz-plane.(explanation below). part c: The magnitude of the magnetic force on an electron moving in the −y-direction at 3.50 km/s is 9.02 × 10−14 N. part d: Therefore, the direction of the magnetic force in the xz-plane is in the +z direction. are the answers

Part A:

The magnetic field is given by the formula:

F= qvBsinθ

where F is the magnetic force, q is the charge of the particle, v is the velocity of the particle, B is the magnetic field and θ is the angle between the velocity of the particle and the magnetic field.

The force on proton moving in the +x direction,

Fp = 2.06×10−16 N and the

velocity,  vp = 1.50 km/s = 1.5 × 10^3 m/s

Putting the values in the formula:

Fp= qvpBsinθp

2.06×10−16 = (1.60 × 10−19)(1.50 × 10^3)Bsinθp

where q is the charge of proton which is 1.6 × 10−19 C

The angle θp between the velocity and the magnetic field is 90° since the force is perpendicular to the velocity and the magnetic field.

Sin 90° = 1

Substituting the values, we get

B = 1.17 × 10−5 T

The magnitude of the magnetic field is 1.17 × 10−5 T

Part B:

The direction of the magnetic field can be obtained from the force on the electron moving in the -z direction and the force is given by

Fe = 8.60×10−16 N

and the velocity,

ve = 4.20 km/s = 4.2 × 10^3 m/s

Putting the values in the formula:

Fe= qveBsinθe8.60×10−16 = (1.60 × 10−19)(4.2 × 10^3)Bsinθe

where q is the charge of electron which is 1.6 × 10−19 C

The angle θe between the velocity and the magnetic field is 90° since the force is perpendicular to the velocity and the magnetic field.

Sin 90° = 1

Substituting the values, we get

B = 1.68 × 10−5 T

Since the force is in the +y direction and the velocity is in the -z direction, the magnetic field should be in the +x direction.

Therefore, the direction of the magnetic field is in the xz-plane.

Part C:

The magnitude of the magnetic force on an electron moving in the −y-direction at 3.50 km/s is given by the formula:

F= qvBsinθ

where F is the magnetic force, q is the charge of the particle, v is the velocity of the particle, B is the magnetic field and θ is the angle between the velocity of the particle and the magnetic field.

The velocity of the electron, ve = 3.50 km/s = 3.5 × 10^3 m/s

The angle between the velocity of the particle and the magnetic field is 90° since the force is perpendicular to the velocity and the magnetic field.

θ = 90° = π/2

Substituting the values in the formula:

F= qveBsinθF = (1.60 × 10−19)(3.5 × 10^3)(1.68 × 10−5) × 1F = 9.02 × 10−14 N

The magnitude of the magnetic force on an electron moving in the −y-direction at 3.50 km/s is 9.02 × 10−14 N.

Part D:

The direction of the magnetic force can be obtained from the right-hand rule. The direction of the magnetic force is perpendicular to both the magnetic field and the velocity of the particle.The velocity of the electron is in the -y direction and the magnetic field is in the +x direction. Using the right-hand rule, the direction of the magnetic force is in the +z direction.

Therefore, the direction of the magnetic force in the xz-plane is in the +z direction.

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Answer:

if the resistor is fitted in series with the bulb , then the current flowing will be 0.15 A.....

if the resistor if fitted in parallel with the bulb ,

the current flowing will be 0.6 A

Explanation:

total potential difference = 1.5V

when resistors in series ,

total equivalent resistance is = 5 + 5 = 10 ohm

so current = 1.5 ÷ 10 = 0.15

when resistors in parallel ,

total equivalent resistance is = (5 × 5)÷(5 + 5) =2.5 ohm

so current = 1.5÷2.5 = 0.6 A