A lead fishing weight of mass 0.20 kg is tied to a fishing line that is 0.50 m long. The weight is then whirled in a vertical circle. The finishing line will break if its tension exceeds 100.0 N. (a) If the weight is whirled at higher and higher speeds, at what point in the vertical circle will the string break (top, bottom, or random position)

Answer:

support lights as a wave

Explanation:

In the model of light as a particle, the experimenter would expect to see one small hole of light emerging on the wall. However, as the light spreads out, it behaves much like a wave that diffracts when going through a small hole.

The earthquake would occur 13 minutes before 10:05 a.m. which will be at 9.52 am.

The p-waves travel with a constant velocity of 7 km/s

The time can be calculated by using the formula

t = d / v

where

T1 =  10:05 a.m

d is the distance they take to travel from the epicenter

v is the speed of the p-waves

On average, the speed of p-waves is

v = 7 km/s

d = 5600 km (given)

Substituting the values in the formula;

t = d / v

t = 5600 ÷ 7

t = 800 seconds

Converting into minutes,

t = 800 ÷ 60

t = 13.3

≈ 13 mins

T1 -  13 mins = T2

10:05 - 13 mins = 9.52 am

It means the earthquake occurred prior 13 minutes, that is at 9.52 am.

Therefore, the earthquake occurred at 9.52 am.

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Answer:

I think its A.........

Answer:

1. focal point, 2. focal length, 3. center of lens, 4. principal axis

Explanation:

The labeling of the concave lens parts should be described below:

A concave lens refers to a lens that should have a minimum of one surface that curves inwards. A concave lens is thinner at its center as compared to the edges.

The labeling should be

1. focal point,

2. focal length,

3. center of the lens,

4. principal axis

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Change aspect of personality can occur by working hard and being focused on the changes you want to make.

A personality change can occur when an individual learns new habit. This new habit is developed or learnt through habitual responses that have stuck.

Thus, we can conclude that changing your habitual responses over time is one way to create personality change.

The only correct option is,  working hard and being focused on the changes you want to make.

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Answer: 25.51m

Explanation: KEi +PEi = KEf + PEf

KEi = 500, PEi = 0, KEf = 0, PEf = 500

PE = fg * m * h

500 = 9.8 * 2 * h

h = 25.51m

Answer:

main sequence

Explanation:

because i think it is true

Answer:

Sexual reproduction you need two organisms to reproduce.

Asexual is when you can multiply yourself and there is nothing different about the offspring and the parent.

Answer:

Average shear stress;τ = 80 Pa

Explanation:

We are given;

Thickness;t = 5mm = 0.005 m

Velocity;u = 4 m/s

Specific Gravity;Sg = 0.8

Kinematic viscosity;ν = 1.25 × 10^(-4) m²/s

We are not given density of the oil, but given specific gravity of 0.8. we know that formula for specific gravity of an object = Density of object/Density of water

Density of water = 1000 kg/m³

Thus;

0.8 = density of oil/1000

Density of oil = 800 kg/m³

Now, let's calculate dynamic viscosity of the oil. It's given by the formula;

μ = ρν

Where;

μ is dynamic viscosity

ρ is density of oil

ν is kinematic viscosity

So,

μ = 800 × 1.25 × 10^(-4)

μ = 0.1 kg/m.s

Now, formula for the average shear stress is given as;

τ = μ × u/t

Plugging in the relevant values, we have;

τ = 0.1 × 4/0.005

τ = 80 Pa

The speed of light in material B is 1.6625 × 108 m/s.

The refractive index of a material is its optical density relative to that of a vacuum.

Material B has a refractive index of nB, and its speed of light is vB.

The speed of light in material A is given as 1.25 x 108 m/s.

The refractive indices of materials A and B have a ratio of nA/nB = 1.33.

We will use the formula:

nA/nB = vB/vA = nA/nB.

Therefore, nA/nB = vB/1.25 x 108 m/s.

This equation can be rearranged to give the speed of light in material B:

vB = nA/nB × 1.25 x 108 m/s.

Therefore, vB = 1.33 × 1.25 × 108 m/s.

We will perform this calculation:

vB = 1.6625 × 108 m/s.

Therefore, the speed of light in material B is 1.6625 × 108 m/s.

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In order to measure the resistance in the circuit, we need to know the voltage V and the current I in the circuit, this way we can calculate the resistance using the formula:

In order to calculate the current, we can use an amperemeter that must be in series with the circuit, this way it will not affect the circuit.

And in order to calculate the voltage, we can use a voltmeter that must be in parallel with the resistance, this way it will not affect the circuit.

The correct option that shows an amperemeter in series and a voltmeter in parallel is the fourth option.

An increase in the required stopping voltage if the photoelectric effect simply affects the frequency of a incident sunlight onto to the emitter.

Since photons are the units of light, according to Einstein's theory, an electron receives the entire photon's energy when it collides with a metal surface. The ejected electron receives the remaining energy as kinetic energy after using some of this energy to free it from the metal atom's hold.

Three key properties of the photoelectric effect that are not consistent with classical physics include: (1) the lack of a lag, (2) the independence of photoelectrons' kinetic energy from the strength the incident radiation, and (3) the existence of a cut-off frequency.

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The way in which one atom interacts with another atom is mostly influenced by the configuration of the electrons farthest from the nucleus.

Option A.

An atom can be defined as the smallest part of a substance that cannot be broken down chemically. Each atom has a nucleus (center) made up of protons (positive particles) and neutrons (particles with no charge).

The arrangement of electrons in orbitals and shells around the nucleus is referred to as the electronic configuration of the atom.

Thus, we can conclude that the way in which one atom interacts with another atom is mostly influenced by the configuration of the electrons farthest from the nucleus.

The remaining options do not fit the empty space properly, and they include;

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The string moves to the right, as it restores its original position with the median plane of the bow. As a result, the string "pulls" on the arrow with a force F2. 2. The tip of the arrow T moves slightly to the left.

pls thank me and brainliest me

The vertical acceleration the rocket should have so that his apparent weight is equal to his true weight on earth is 8.2 m/s².

The given parameters;

acceleration due to gravity on moon, g = 1.6 m/s²

The true weight of the rocket is calculated from Newton's second law of motion;

F = ma

Apparent weight on moon = true weight on Earth

mg + ma =  mG

where;

G is the acceleration due to gravity on Earth

m(a + g) = mG

a + g = G

a = G - g

a = 9.8 - 1.6

a = 8.2 m/s²

Thus, the vertical acceleration the rocket should have so that his apparent weight is equal to his true weight on earth is 8.2 m/s².

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Answer:

Convergent.

Explanation:

Just as oceanic crust is formed at mid-ocean ridges, it is destroyed in subduction zones. Subduction is the important geologic process in which a tectonic plate made of dense lithospheric material melts or falls below a plate made of less-dense lithosphere at a convergent plate boundary.

The term that describes the given graph is a negative correlation, linear, inversely proportional relationship

Regression evaluation is a similar method for inspecting the connection between a final results variable and one or extra threat elements or confounding variables (confounding is mentioned later). The end result variable is likewise referred to as the reaction or based variable, while the threat elements and confounders are referred to as predictors, explanatory variables, or unbiased variables. The based variable in regression evaluation is indicated with the aid of using "Y," whilst the unbiased variables are denoted with the aid of using "X."

The path of the hyperlink is indicated with the aid of using the signal of the correlation coefficient. The correlation coefficient's price displays the electricity of the hyperlink.

It is vital to spotlight that whilst there can be a non-linear dating among non-stop variables, calculating a correlation coefficient does now no longer display this. As an end result, it's miles usually vital to investigate the statistics well earlier than setting up a correlation coefficient. Graphical representations are very powerful for investigating relationships among variables.

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We can use the "suvat" method

s is displacement

u is initial velocity

v is final velocity

a is acceleration

t is time

We substitute in what we know...

s = ?

u = 22.5 (the speed/velocity the trucks is initially)

v = 0 (the truck comes to a stop)

a = -2.27 (negative because it is decelerating

t = ?

\(\text{suvat formulae}:\\v = u + at\\s = ut + \frac{1}{2}at^2\\v^2 = u^2 + 2as\\s = \frac{v+u}{2}t\\s = vt - \frac{1}{2}at^2\)

We have \(u\), \(v\), \(a\) and we want to find the time for how long it takes the truck to stop.

We can use \(v = u + at\)

\(v = u + at\\0 = 22.5 - 2.27 \times t\\\frac{-22.5}{-2.27} = t\\t = 9.91...\ \text{s}\)

To find the distance (displacement), we can use \(s = ut + \frac{1}{2}at^2\)

\(s = ut + \frac{1}{2}at^2\\s = 22.5 + \frac{1}{2} \times -2.27 \times 9.91^2\\s = -88.9661935\ \ \text{(we make it positive since you can't have negative distance)}\\s = 88.97...\ \text{m}\)

To find the distance travelled 3 seconds after breaks are applied;

We just use the same formula, but with \(t = 3\)

\(s = ut + \frac{1}{2}at^2\\s = 22.5 \times 3 + \frac{1}{2} \times -2.27 \times 3^2\\s = 12.285\ \text{m}\)

2,302.74 J is the heat generated.

Current electricity is the electricity produced by the movement of electrons. Static electricity is the electricity that accumulates on a substance's surface. Power plants and batteries are used to produce the current electricity.

Electric current in a wire, where electrons serve as the charge carriers, is a measurement of the amount of charge that moves through any point of the wire in a given amount of time.

The mass of the aluminum is m = 0.25 kg.

The difference in temperature is T=10 C.

The following is a list of aluminum's specific heat capacities:

c=921.096 J/kg∘C

Therefore, we apply the following formula in this instance:

Q=mcΔT

We replace with:

Q=(0.25kg)(921.096J/kg∘C)(10∘C)

Thus, we will receive the heat produced:

Q=2,302.74 J

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The field strength can be calculated by using the equation B = mv/qr, where B is the magnetic field strength, m is the mass of the proton, v is the velocity of the proton, q is the charge of the proton, and r is the radius of the circular path.

In this case, the field strength is equal to 3.34 x 10-13 T.

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the charge's own velocity and the magnetic field acts on it when the charge is travelling through a magnetic field.

Iron fillings can be utilized to reveal this field, which is invisible to the human eye. The north pole and the south pole are the two endpoints of every magnet. Magnetic objects are either drawn to or pushed away by magnetism. When two magnets with the same poles are placed close to one another, they push apart and repel.

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Mass of body = 8kg

Momentum of body = \(30kgms^{-1}\)

Force = 20N

Time for which force acts = 5s

Impulse of the force = Force × time for which force acts

= 20 × 5= 100Ns

Change of momentum = Impulse of the force= 100Ns

Therefore, the impulse of the force= 100Ns

Change of momentum is 100Ns

The final momentum of the body = 100Ns
The final velocity of the body is 5m/s

What is momentum?

Momentum is the result of a particle's mass and velocity. Being a vector quantity, momentum possesses both magnitude and direction.

According to Isaac Newton's second equation of motion, the force applied on a particle is equal to the time rate of change of momentum. Check out Newton's laws of motion.

According to Newton's second law, if a particle is subjected to a constant force for a specific amount of time, the result of the force and time (referred to as the impulse) is equal to the change in momentum.

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The amount of load lifted by the pulley when the efficiency is 60% and effort is 50 N is determined as 30 N.

The amount of load lifted by the pulley is calculated by applying the formula for efficiency of a machine as follows;

E = L / E   x  100%

where;

The amount of load lifted by the pulley is calculated as;

60 = L / 50   x 100%

60 = 100L / 50

100L = 50 x 60

100 L = 3000

L = 3000 / 100

L = 30 N

Thus, the amount of load lifted by the pulley is 30 N.

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Answer:

false I think

Explanation:

hope that help

so it's not divided in 3 regions

Answer:

Explanation:

ake is 1.2 x 10^12 J. Only 6.2 x 10^11 J of electrical energy is generated when the water is released. Calculate the efficiency of this energy

Gerard's average velocity for the ride is 6 meters per second.

To find Gerard's average velocity for the ride, we can use the formula:

Average velocity = Total displacement / Total time

First, we need to convert the distance traveled from kilometers to meters:

7.20 kilometers * 1000 = 7200 meters

Next, we convert the time from minutes to seconds:

20.0 minutes * 60 = 1200 seconds

Now, we can calculate the total displacement by subtracting the initial position from the final position. Since Gerard is riding directly east, there is no change in the east-west direction, so the displacement is equal to the distance traveled:

Total displacement = 7200 meters

Finally, we substitute the values into the average velocity formula:

Average velocity = 7200 meters / 1200 seconds

Average velocity = 6 meters per second

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Given data:

* The mass of the block is m.

* The initial velocity of the block is v.

Solution:

According to the law of conservation of momentum,

where p_f is the final momentum and p_i is the initial momentum,

The initial momentum of the block is,

Thus, the final momentum of the block is,

where v_f is the final velocity of the block,

Thus, the final momentum of the block is v.

Hence, option B is the correct answer.

Answer:

31.84

Explanation:

To find the magnitude of the sum of the three vectors, first, we need to add the vectors component-wise. Then, we can find the magnitude of the resulting vector.

Add the vectors component-wise:

Vector A + Vector B + Vector C = [13+13+0, 8+0+1, 0+8+8] = [26, 9, 16]

Find the magnitude of the resulting vector:

The magnitude of a vector [x, y, z] is given by the formula:

magnitude = sqrt(x^2 + y^2 + z^2)

Plugging in the values from the resulting vector:

magnitude = sqrt(26^2 + 9^2 + 16^2)

magnitude = sqrt(676 + 81 + 256)

magnitude = sqrt(1013)

magnitude ≈ 31.84

The magnitude of the sum of the three vectors is approximately 31.84.

Hope this helps!

When only source A is on, the intensity of the light on the screen is ia, which is the intensity of light from source A.

Intensity is a measure of the strength or power of a stimulus, usually referring to sound, light, or a force. It is measured in terms of the amount of energy or power per unit area, and is often expressed in decibels (dB) for sound, or watts per square meter (W/m2) for light. Intensity is an important concept in physics, as it affects the way energy is transmitted and absorbed. In everyday life, intensity can be used to describe the volume or brightness of a sound or light, or the strength of an emotion or feeling.

This is because the screen is far enough from the sources that each source individually illuminates the screen with the same intensity everywhere on the screen. Since source A is more intense than source B, the intensity of light on the screen from source A would be higher than from source B.

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Answer:

Newton's first law: An object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force.