which two explanations are based on personal beliefs

The diffraction grating affects the light from a hydrogen lamp as it produces the separation of the colors of the white light. The spectrum can be viewed through the grating,

First, let's calculate the power used by the motor with the formula below:

Now, let's multiply the power by the time to find the energy consumed:

A substance that prevents free flow of electrical current is known as an electrical insulator. The electrons in the insulator's atoms are securely bonded and immobile.

Protons are in overabundance on an aluminium plate that is positively charged. A positively charged aluminium plate has a deficiency of electrons when viewed from the perspective of electrons. We might characterise each extra proton as being somewhat dissatisfied in terms of people.

The other plate develops an imposed positive charge as a result of the electron's electric field, which pulls on the electrons that are in that plate and repels other electrons.

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Answer:

The  value  is  \(C =  21.07 ppm\)

Explanation:

From the question we are told that

 The volume of the first  aliquot is \(V_a1  =  25.0 \  mL\)

 The  volume after dilution is  \(V_A =  50.0mL\)

 The  Absorbance of the first solution  is  \(A_1 =  0.656\)

 The  wavelength at which the absorbance occurred is   \(\lambda _1 =  348 nm  =  348*10^{-9} \  m\)

    The  length of the cell \(l  = 2.50 \  cm\)

    The volume the second  aliquot is \(V_{a2}  =  25.0 \  mL\)

     The  volume of the solution it was mixed with is  \(V_s  =  10.00mL\)

     The  concentration of quinine in the 10 mL solution  \(Z =  25.7ppm\)

    The volume of the second solution after dilution is \(V_d = 50.0 mL\)

      The  absorbance of the second solution is \(A_2 =  0.976\)

Generally the concentration of quinine is mathematically represented as

         \(C =  \frac{A_1 *Z *  V_s  }{(A_2 -A_1) V_{a2}}\)

=>    \(C =  \frac{ 0.656  *  25.7 *  10.0}{ (0.976 -  0.656) *  25}\)

=>   \(C =  21.07 ppm\)

The smallest value of T for loose rocks on the asteroid's equator to fly off is about 2.2 hours.

To find the smallest value of T for loose rocks on the asteroid's equator to fly off, we need to consider the centrifugal force acting on the rocks due to the rotation of the asteroid. The centrifugal force is given by:

F = m * ω^2 * r

where m is the mass of the rock, ω is the angular velocity of the asteroid, and r is the distance from the center of the asteroid to the rock (which is equal to the radius of the asteroid, r = 18 km).

At the equator of the asteroid, the centrifugal force is balanced by the gravitational force, so we have:

F = m * ω^2 * r = m * g

where g is the acceleration due to gravity on the surface of the asteroid, which we found in part (a): g = 1.66 x 10^-3 m/s^2.

Solving for ω, we get:

ω = sqrt(g/r)

The rotational period T is related to the angular velocity by:

ω = 2π/T

So we can write:

T = 2π/ω = 2π/sqrt(g/r)

Substituting the values, we get:

T = 2π/sqrt(1.66 x 10^-3 m/s^2 * 18,000 m) ≈ 2.2 hours

Therefore, the smallest value of T for loose rocks on the asteroid's equator to fly off is about 2.2 hours.

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Static electricity, static occurs when there is friction in this case the shirt and skin

When there is friction, like here between the clothing and the skin, static electricity results.

A mismatch of electric currents within or across the surface of a material, and between materials, results in static electricity. The charge persists until it can be expelled through an electrical shock or current. Static electricity is so-called in contrast to current electricity, which conveys energy by having an electric charge flow through a space or electrical conductor.

When two surfaces come into touch, wear away, then separate from one another while at least one of the surfaces seems to have a good strength to electric current, a static electric charge can be produced.

People do feel, hear, and even observe the flash as the surplus charge is neutralized when placed close to a large electronic circuit or a location with an expression of the opposite polarity, therefore most people are familiar with static electricity's effects.

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Answer:

if it were submerged 1000 m in the ocean it would be crushed because of the differences of the air and water pressure.

If it were taken 10,000 m (higher than Mt Everest) it would explode due to the differences of external and internal air pressures.

Answer:

x = 10

Explanation:

One of the properties of a rhombus is that the diagonals bisect each other at 90°

This means AC and BD are perpendicular to each other.

Let us call this intersection point as O

Then AOC forms a triangle with angles 3x - 13, 8x-7 and 90°

Since the sum of 3 angles of a triangle = 180°

(3x - 13) + (8x-7) + 90 = 180

(3x - 13) + (8x-7) = 180 - 90

(3x - 13) + (8x-7)  = 90

3x - 13 + 8x - 7 = 90

3x + 8x - 13 - 7 = 90

11x - 20 = 90

11x = 90 + 20 = 110

x = 10

Answer:

A. vitamin B

Explanation:

An electric circuit containing a dry cell and a torch bulb is completed by including a metal screw driver having a wooden handle. The bulb does not glow as wood does not pass electricity through it.

An electric circuit conducting current is a closed path of wires and electrical components which allows current through them on the application of potential difference between two points in the path.

Materials are usually of two types, they are conductors and insulators. Insulators do not allow current to pass through them due to the arrangement of atoms in them.

Some of the examples of insulators are wood, plastic, stone, etc.

As wood is included in the circuit, the current is not continuous and breaks its flow at the point where wood id connected.

Thus, the bulb does not glow.

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The probe will be moving at a speed of 16,787 m/s relative to the sun after it swings around Jupiter.

We can solve this problem by applying the principle of conservation of momentum and conservation of energy.

Before the interaction, the total momentum of the probe and Jupiter is:

\(p = m_probe * v_probe + m_jupiter * v_jupiter\)

where m_probe and v_probe are the mass and velocity of the probe, and m_jupiter and v_jupiter are the mass and velocity of Jupiter.

After the interaction, the total momentum is conserved, but the velocity of each object will change due to the gravitational interaction. We can assume that the interaction is an elastic collision, which means that the total kinetic energy of the system is conserved as well. Therefore, we can write:

\(m_probe * v_probe + m_jupiter * v_jupiter = m_probe * v_probe' + m_jupiter * v_jupiter'\)

\(1/2 * m_probe * v_probe^2 + 1/2 * m_jupiter * v_jupiter^2 = 1/2 * m_probe * v_probe'^2 + 1/2 * m_jupiter * v_jupiter'^2\)

where v_probe' and v_jupiter' are the velocities of the probe and Jupiter after the interaction.

Since the probe is much lighter than Jupiter, we can neglect the change in velocity of Jupiter and assume that it is stationary. This gives us:

\(m_probe * v_probe = m_probe * v_probe' + 0\\1/2 * m_probe * v_probe^2 = 1/2 * m_probe * v_probe'^2\)

Solving for v_probe', we get:

\(v_probe' = sqrt(v_probe^2 - 2 * G * M_jupiter / r)\)

where G is the gravitational constant, M_jupiter is the mass of Jupiter, and r is the distance of closest approach between the probe and Jupiter.

Plugging in the values, we get:

\(v_probe' \\= sqrt((8000 m/s)^2 - 2 * 6.67 × 10^-11 N m^2/kg^2 * 1.9 × 10^27 kg / (2 * 7.8 × 10^8 m))v_probe' = 16,787 m/s\)

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Answer:

roddy i guess?

Explanation:

Answer:

Dababy and Roddy Ricch. Jason's songs use to be fire years back but now....not so much.

Explanation:

Answer:

Explanation:

The Earth pulls the bicycle downward through the force of gravity, and, in response, the bicycle pulls up on the Earth with a force of equal magnitude. Gravity "pushes" the Earth into the road, which pushes up with an opposite force, canceling gravity. Thus, action reaction forces do not cancel each other.

Answer:

The apparent power is the power delivered to a load without considering the effects of the power-factor angle of the load

Explanation:

If I and V are the current and voltage across the load, the apparent power, = IV

Since,

apparent power = active power + reactive power

active power = IVcosФ

reactive power = IVsinФ

So, IV = IVcosФ + IVsinФ

where I = current, V = voltage and Ф = power factor angle.

We see that the apparent power is the product of the current, I and the Voltage, V without considering the power factor angle of the load.

So, the apparent power is the power delivered to a load without considering the effects of the power-factor angle of the load.

The correct answer is D: velocity and acceleration. In a simple harmonic oscillator, the restoring force and position vector point in opposite directions, whereas the velocity and acceleration vectors point in the same direction throughout the motion.

For a simple harmonic oscillator, the position vector describes the object's displacement from equilibrium. The restoring force vector always points back toward equilibrium. The velocity vector describes the speed and direction of the object, and the acceleration vector describes the rate of change of the velocity vector. Both the velocity vector and acceleration vector always point in the same direction throughout the motion.

The equations governing the motion of a simple harmonic oscillator involve the position vector, the restoring force vector, the velocity vector, and the acceleration vector. The position vector is determined by the restoring force vector, while the acceleration vector is determined by the position vector. This means that the restoring force vector and the acceleration vector are not always pointing in the same direction.

In summary, for a simple harmonic oscillator, the correct pair of vector quantities that always point in the same direction throughout the motion is the velocity and acceleration vectors.

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Our most detailed knowledge of Uranus and Neptune comes from spacecraft exploration. NASA's Voyager 2 spacecraft was the first and only spacecraft to fly by both Uranus and Neptune, providing us with a wealth of data and images of these distant gas giants.

The spacecraft conducted numerous flybys, capturing detailed images and measurements of their atmospheres, magnetic fields, and moons. The Hubble Space Telescope has also contributed to our understanding of Uranus and Neptune, but its observations have been more limited compared to the data obtained from spacecraft. Ground-based visual and radio telescopes have also been used to study these planets, but their observations are limited by the Earth's atmosphere. Manned missions have not yet been sent to explore Uranus or Neptune.

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Answer:

\(a=0.45\ m/s^2\)

Explanation:

Given that,

The radius of a bend, r = 20 m

Velocity of motorcyclist, v = 3 m/s

The combined mass of motorcyclist and the motorcycle is 50 kg

We need to find the motorcyclist’s centripetal acceleration. The formula used to find the centripetal acceleration is given by :

\(a=\dfrac{v^2}{r}\\\\a=\dfrac{(3)^2}{20}\\\\a=0.45\ m/s^2\)

So, the acceleration of the motorcyclist is \(0.45\ m/s^2\).

Answer:

OPTION 3

Explanation:

Velocity specifies speed, while speed incluedes a specific direction

The electric field strength inside a spherical ball of charge is given by the equation;E(r) = Emax(r⁴/R⁴)Where Emax is the maximum electric field strength in the sphere.

The electric flux emanating from a point charge is directly proportional to the charge and inversely proportional to the square of the distance between the point charge and the point where the electric flux is calculated. Thus;E = Q/4πϵr²Where E is the electric field strength, Q is the charge, ϵ is the permittivity of free space and r is the distance between the point charge and the point where the electric field strength is calculated

.Since the electric field strength inside a spherical ball of charge is Emax at a distance of r = R, the maximum electric field strength, Emax, is given by;Emax = Q/4πϵR³2. inside the ball as a function of r is given by;ρ(r) = Q/V(r)Where V(r) is the volume of the spherical ball of radius r.Substituting for V(r);V(r) = 4/3πr³ρ(r) = Q/4/3πr³ρ(r) = 3Q/4πr³

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After the universe's 13.7 billion year old Big Bang, it has gone through numerous phases or epochs.

It may have experienced more activity and change in the first second than in all the billions of years since because of the harsh environment and violence of its very early beginnings.

We can construct a rough timeline as follows using our current understanding of how the Big Bang might have developed, taking into account notions about inflation, the Grand Unification, etc.

The Planck Epoch (or Planck Era), which spans from 0 to around 10-43 seconds (1 Planck Time), is the closest that modern physics can come to the beginning of time itself.

Therefore, After the universe's 13.7 billion year old Big Bang, it has gone through numerous phases or epochs.

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The Weight of an object is more at pole and less at equator of the earth because the distance of the pole is less than the distance of the equator from the centre of the earth.

Answer:

Archaeology

Explanation:

Radioisotopes are radioactive atoms of an element in which their atoms contain excess energy making them unstable. When broken down they become more stable releasing radiations.

Carbon 14 is a radioactive isotope that is used in archaeology to study and estimate the lifespan and age of organic materials such as wood, leather. Carbon 14 can be used to estimate the ages of materials up to 50000 to 60000 years.

Answer:

archaeology

Explanation:

Answer:

a c d

Explanation:

yeet

Answer:

a c d

Explanation:

Answer:

Scalars are quantities that are fully described by a magnitude (or numerical value) alone. Vectors are quantities that are fully described by both a magnitude and a direction.

The speed of the motorcycle is  9.02777m/s in 7.2 sec.

The rate at which an object's velocity with respect to time changes is referred to as acceleration in mechanics. They are vector quantities, accelerations. The direction of the net force acting on an object determines the direction of its acceleration.

v(0) = 5.8

s(0)=0

s(7.2) = 65

s(t) =at^2/2 + v(0)t

s(7.2) = a(7.2)^2 + 5.8(7.2) = 65

a = (65-41.76)/51.84

a= 23.24/51.84 = about 0.4483 m/s²

v(t) = s'(t) = at +v(0) = at +5.8

v(7.2) = 0.4483(7.2) + 5.8

= 9.02777

velocity in 7.2 seconds is about 9.03 meters per second

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Well spring magma and  groundwater must be interacting beneath the surface which is why they geyser is erupting.

A scientist observes a geyser erupting. The two objects that must be interacting beneath the surface are well spring magma and groundwater.

When a geyser is erupting, it involves the interaction of groundwater and well spring magma. The groundwater seeps into the earth's crust, where it gets heated by the well spring magma. Once the water reaches a certain temperature, it turns into steam and expands, causing pressure to build up. Eventually, this pressure forces the heated water and steam to the surface, resulting in the eruption of the geyser.

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