During the motion of the slinky in a transverse wave, what do the particles of the slinky coil do?



Question 3 options:

the slinky particles move from the hand down the wave to the block


the slinky particles move side to side


the slinky particles move up and down

From the calculation;

1) Melting point of indium = 171.4°

2) The resistance is 52.9 ohm

3) The power dissipated is  834 W

The temperature coefficient of resistance is a measure of how much the resistance of a material changes with temperature. It quantifies the relationship between the change in resistance and the change in temperature.

We have that;

R1/R2 = (1 + αt1)/(1 + αt2)

50/76.8 = (1 + (3.92 * \(10^-3\) * 20))/(1 +  (3.92 *\(10^-3\) * t))

0.65 = 1.0784/1 + 0.00392t

0.65(1 + 0.00392t) =  1.0784

0.65 + 0.0025t = 1.0784

t = 171.4°

P = \(V^2\)/R

R = \(V^2\)/P

R = \(230^2\)/1000

R = 52.9 ohm

The new power is;

P =\(210^2\)/52.9

P = 834 W

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Answer:

Gravitational potential energy

Explanation:

Gravity would act upon it if it were not suspended.

Answer: Gravitational potential energy

Explanation: I did the quiz! Hope it helped!

Answer:

its the lorry

Explanation:

The kinetic energy of the truck will be, 5625000 kg m/s and the kinetic energy of the bullet will be 156250 kg m/s. So the kinetic energy of the lorry will be higher than the kinetic energy of the Bullet.

Kinetic energy is a type of energy that a particle or an object possesses as a result of its motion. By exerting a net force on an item, work is done, which transfers energy; as a result, the object accelerates and obtains kinetic energy.

A moving item or particle's ability to move depends on both its mass and velocity. This is known as kinetic energy. Translation (or movement along a path from one location to another), rotation about an axis, vibration, or any combination of motions are examples of possible types of motion.

According to the question,

K.E of the lorry: 1/2 (4500)(50)²

K.E of the lorry = 5625000 kg m/s.

K.E of the bullet: 1/2(0.05)(250)²

K.E of the bullet = 156250 kg m/s

Hence, the kinetic energy of the lorry is greater than the kinetic energy of the bullet.

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Answer:

B. Applied

Explanation:

Applied means that somethings is pushing directly into it like a person to a box. and well the reasons why the others are not contact force are because gravity its cause to an attraction to the planet and no matter where you are it will still attract you, electric is not because it can flow through air, magnetic it affects to an invisible field that even if its not torching the marital you can still feel the magnetic push or pull

So applied

Answer:

d = s • t

3m/s • 45s and and the seconds will cancel out.

135 meters

Answer:

velocity=3m/s

time=45sec

displacement=?

Explanation:

we have

velocity=displacement/time

3m/s=displacement/45

displacement=3×45=135m

Mikel runs 135m far.

Answer:

The correct answer is B.

The astronaut will know due to the light from the explosion.

Explanation:

Sound and vibrations require a medium such as air to travel through. Space, there is no air. Only a vacuum. So sound and vibrations are unable to travel. Light requires no medium to travel. It can go through a vacuum.  

Therefore the Astronaut will see a bright flash of light as it travels from the explosion to outer space. It is also important to note that light can travel very far because nothing else interacts with its wave particles and as such, it cannot be impeded.

Cheers!

Answer:

C. A turtle relies indirectly on the Sun as an energy source.

Explanation:

Turtles are animals, meaning they are unable to perform photosynthesis, thus option A is inapplicable. Turtles consume food such as algae and seagrass. These aquatic plants gain their energy directly from the Sun through photosynthesis, and as a result when the turtle consumes these plants, that energy from the Sun is indirectly feeding the turtle.

The spinning tube of air created by winds moving in opposite directions to tip upwards and become vertical because of the updraft of wind in a supercell. Hence, option (A) is correct.

As a deep, continuously revolving updraft known as a mesocyclone, a supercell is a type of thunderstorm. This causes these storms to occasionally be called spinning thunderstorms.

Supercells, which are the least frequent and have the potential to be the most severe of the four types of thunderstorms (supercell, squall line, multi-cell, and single-cell), are the least common overall.

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A cell wall's developing membrane has an 80.0 mV voltage difference and is 9.00 nm thick. The electric field is 8.89 × 10⁶ V/m in strength.

The potential drop over distance is used to represent the electric field strength. This is, E= ΔV​ / d.

In our situation, the values are: ΔV​ 80 mV, d = 9 nm. These values will be in SI units as follows:

ΔV = 0.08 V.

d = 9 × 10⁻⁹ m.

Consequently, the strength of our electric field will be

E= 0.08​ /  9 × 10⁻⁹ m.

= 8.89 × 10⁶ V/m.

​In physics, the electric field is a representation of the entire region that can be found closest to an electrically charged item when it attracts another object. Volts per meter, or V/m, is used to represent the electric field in the SI unit system.

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Answer: The wavelength and frequency of light are closely related. The higher the frequency, the shorter the wavelength. Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength.

Explanation:

The power dissipated in the cord that is made up of two wires of diameter 0.129 cm (no. 16 copper wire) and length, 2.4 m (8 ft) that is connected to an electric heater which draws 13.5 A on a 120-V line is 191.40 W.

How to find the power dissipated in the cord?

The diameter of each wire = 0.129 cm length of the cord = 2.4 current through the wire = 13.5 A, Voltage across the wire = 120 V.

For no. 16 wire the resistance per unit length is 4.016 × 10-3 Ω/m. The resistance of each wire is R = ρl/A, where ρ = resistivity, l = length of the wire, A = area of the cross-section of the wire, and diameter of the wire = 0.129 cm. So, radius = d/2 = 0.0645 cm = 6.45 × 10-4 m

A = πr² = π(6.45 × 10-4 m)² = 3.289 × 10-7 m²

Area of a cross-section of each wire = 2 × 3.289 × 10-7 m² = 6.578 × 10-7 m²

The resistance per unit length of no. 16 wire is 4.016 × 10-3 Ω/m.

So, the resistance of each wire is R = (4.016 × 10-3 Ω/m) × (2.4 m) / (6.578 × 10-7 m²)= 1462.42 Ω

The total resistance of the wire is RT = 2R = 2 × 1462.42 Ω= 2924.84 Ω

Now, the power dissipated in the cord is P = I²R= (13.5 A)² × 2924.84 Ω= 191.40 W

Therefore, the power dissipated in the cord that is made up of two wires of diameter 0.129 cm (no. 16 copper wire) and length 2.4 m (8 ft) that is connected to an electric heater which draws 13.5 A on a 120-V line is 191.40 W.

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The correct answer is 14 T

B= Amplitude of wave's Magnetic field.

∪°=permeability of free space.

I= Intensity

\(I =B^2/2u\)

\(B=\sqrt{2uI}\)

Here

\(I= 8*10^7 w/m²\)

\(B=\sqrt{2/10/8×107}\)

\(B=\sqrt{2u/8*10^7}\)

\(B=\sqrt{2*4T* 10*7 *8*10^-^7}\)

B = 14-18 T ~ 14 T.

B= 14T

What is magnetic field?

A magnetic field is a vector field that describes the magnetic influence on charges, currents, and magnetic materials in motion. A moving charge inside a magnetic field is subjected to a force that is perpendicular to both its own velocity and the magnetic field. A changing magnetic field also has an effect on a variety of nonmagnetic materials by influencing the motion of their outer atomic electrons. Magnetic fields are formed around magnetised materials and are generated by electric currents similar to those found in computers. computers.

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Answer:

C. Responsible

Explanation:

This description sounds like a responsible person.

Hope it helped!

What characteristics have led humanity to convert most temperate grasslands to use for agriculture or grazing land?

When trees receive sufficient rainfall and grow quickly, they do not overproduce. Because nutrients decompose rapidly, the growing season is relatively long.

Explanation: Brainliest please

Answer:

Explanation:

Field characteristics

The strength of the field at the Earth's surface ranges from less than 30 microteslas (0.3 gauss) in an area including most of South America and South Africa to over 60 microteslas (0.6 gauss) around the magnetic poles in northern Canada and south of Australia, and in part of Siberia.

Answer:

13.2 meter

Explanation:

because the initial velocity was zero

Answer: chemical properties include those properties that are determined only by changing the molecular structure or chemical composition of any substance.

These include reactivity, flammability, corrosiveness, toxicity, acidity.

Reactivity is the tendency of matter to react with another substance.

The magnitude of the acceleration of the elevator is 1.75 m/s^2, and it is directed downwards.

The difference between the reading on the scale when the student is stationary and when the elevator is moving is equal to the net force acting on the student. In this case, the scale reads 450N when the elevator is moving: 450N - 550N = -100N .

Using Newton's second law, we can calculate the acceleration of the elevator as follows: Net force = mass x acceleration

Acceleration = (-100N) / (550N / 9.81m/s^2) = -1.75 m/s^2

The negative sign indicates that the acceleration is directed downwards, in the opposite direction to the force of gravity.

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Answer:

Explanation:

A concave mirror is a curved mirror that is coated outwards. The outer part of the mirror is always coated. The nature of image formed by an object placed in front of a concave mirror can be real or virtual depending on the distance of the object on the axis from the mirror. The only time the object produces a virtual image is when it is placed between the focus and the pole of the mirror. The virtual image formed is a "MAGNIFIED and upright image"

For a convex mirror, the inner part is always coated and the nature of the image formed by the object doesn't depend on the distance between the image and the mirror. No matter where the object is placed, the image formed will always be virtual, upright and DIMINISHED. This means that magnification is always less than 1.

For a plane mirror, the nature of the image produced by a plane mirror also virtual because it is always formed behind the mirror. The size of the image formed is always THE SAME as that of the object. This means that the magnification is always equal to 1.

a) In summary, the difference between virtual images produced by concave, plane, and convex mirrors is that virtual images produced by concave mirror are MAGNIFIED, virtual images produced by plane mirror are THE SAME SIZE as that of the object and virtual images produced by convex mirrors are always DIMINISHED.

b) Magnification is defined as the ratio of the image distance to the object distance. Mag = v/u

Note that object distances are always positive, hence it is only the image distance that can either be positive or negative which in turn affects the magnification causing it to be positive or negative.

Negative image distance shows that the image is virtual while positive image distance shows that the image is real.

A negative magnification therefore shows that the nature of the image is a virtual image.

Answer:

V = 50 volts

Explanation:

Given that,

Resistance, R = 10 ohms

Current, I = 5 A

We need to find the potential difference across the circuit. We know that,

V = IR

Put all the values,

V = 5 × 10

V = 50 volts

Hence, the potential difference is equal to 50 volts.

Answer:The SI system, for this reason, is also called the MKS system. CGS system: On the other side or the second self-consistent system uses centimetres, grams and seconds for length, mass and time.

Explanation:

Divide distance by speed:

18 meters / 1.5 meters/ second = 12 seconds

Answer: 12 seconds

A bowling lane is 18 meters long. it would take 12 seconds for a 1.5 m/s bowling ball to roll down that lane, therefore the correct answer is the third option

The total displacement covered by any object per unit of time is known as velocity. It depends on the magnitude as well as the direction of the moving object.

The mathematical expression for velocity is given by

velocity= total displacement/Total time

As given in the problem a bowling lane is 18 meters long and the ball is moving with a velocity of 1.5 m/s in the roll-down lane we have to find the time period for the bowling ball to roll down that lane

Total displacement = 18 meters

the velocity of the ball = 1.5 m/s

time =?

By substituting the values in the formula of the velocity

1.5 = 18/t

t= 12 seconds

Thus , it would take 12 seconds for a 1.5 m/s bowling ball to roll down that lane

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Answer:

A. the further the yardsticks falls, the slower the reaction time.

Answer:

The further the yardstick falls, the slower the reaction time.

Explanation:

its A

The solution to the equation ln(x) = x - 31, correct to six decimal places, is x ≈ 24.662174.

Newton's method, also known as Newton-Raphson method, is an iterative numerical method used to find the roots of a real-valued function. It is a powerful algorithm for finding solutions to equations where it may be difficult or impossible to obtain an analytical solution.

To find the solutions of the equation ln(x) = x - 31 using Newton's method, we start by rearranging the equation to f(x) = ln(x) - x + 31 = 0.

Next, we need to choose an initial guess for the solution, let's say x0 = 20.

Then, we can use the Newton's method iterative formula:

xn+1 = xn - f(xn)/f'(xn)

where f'(x) is the derivative of f(x).

For our equation, f'(x) = 1/x - 1.

Let's perform the iterations:

x1 = x0 - (ln(x0) - x0 + 31) / (1/x0 - 1)

x1 = 20 - (ln(20) - 20 + 31) / (1/20 - 1)

x1 ≈ 24.660633

x2 = x1 - (ln(x1) - x1 + 31) / (1/x1 - 1)

x2 ≈ 24.662174

x3 ≈ 24.662174

Performing additional iterations, we find that the value of x converges to approximately 24.662174.

Therefore, the solution to the equation ln(x) = x - 31, correct to six decimal places, is x ≈ 24.662174.

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Answer:

！这才是真正的欺哥，一生都靠着吃人血馒头发邪财，终将玩火者必自焚！#DrLiMengYan1 #LiMengYan #COVID19 #YanLiMeng #Ethnicity #CCP  #USCIS

Answer:

What caused the slope to change around 1905 and 1906? Building the Canadian hydroelectric plant reduced the rate of erosion after 1906. This change in the rate of erosion is represented by the change in the slope on the graph. Hydroelectric dams convert kinetic energy from moving water to electrical energy.

Answer:

In 1906, around the time the Canadian hydroelectric plant began operating, the erosion rate decreased to approximately 0.7 meters per year.

Explanation:

As a hockey puck slides across the ice at a constant speed, it is n equilibrium. The correct option is 1.

Chemical equilibrium is the condition in which both the products and reactants are prevalent in concentrations that have no further tendency to change with time, resulting in no observable change in the system's properties.

When a reaction and its reverse reaction proceed at the same rate, this is referred to as chemical equilibrium.

Both forward and reverse reactions occur as a system approaches equilibrium. The forward and reverse reactions are proceeding at the same rate in equilibrium.

It is in equilibrium because it achieves dynamic equilibrium by moving in a straight line at constant speed. The net forces are equal to zero.

Thus, the correct option is 1.

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The change in  frequency observed by the driver when the car is approaching a radio station at a speed of 25.0 m/s broadcasting at a frequency of 74.5 MHz is 74.59 MHz.

The formula for finding the observed frequency when the source is moving towards the observer is given by;

f′=f (v±v0/c)

Where, f is the frequency of the source, v is the velocity of light, v0 is the velocity of the source observed by the observer, c is the speed of light.

In this case, given that, v0 = 25.0 m/sf = 74.5 MHz, v = 3.0 x 108 m/s, c = 3.0 x 108 m/s

Putting the values in the formula, we get,

f′=74.5×(3.0×10^8+25.0×1000/3.0×10^8)=74.59 MHz (approx)

Hence, the change in frequency observed by the driver when the car is 74.59 MHz (approx).

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Electric potential (or voltage) is the amount of work that is needed to move a unit of positive charge from an infinite distance away to a specific location, divided by the magnitude of the charge.

Mathematically, electric potential V is defined as:

V = U/Q,  U is the electric potential energy and q is the magnitude of the charge. If the zero point of the voltage is at infinity, then the electric potential at a point is equal to the work done in bringing a unit positive charge from infinity to that point. This means that the potential energy of a charge at that point is equal to the product of its charge and the electric potential at that point.

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