Describe the photoelectric effect and explain why it could not be explained by Newtonian physics.

Blocks x and y exerts action-reaction forces on each other with 146.1 N and 53.1 N respectively.

The given parameters:

mass of block x = 10 kg

mass of block y = 5 kg

magnitude of the frictional force of block x = 8 N

magnitude of the frictional force of block y = 4 N

the applied force to the right = 40 N

To find:

The block y pulls block x to the left with the following reaction forces;

Force of block y = force due to its own weight + frictional force

where;

g is the acceleration due to gravity = 9.81 m/s²

Thus, block y reacts on block x with a force of 53.1 N

The block x acts on block y towards the right direction with following forces;

Force of block x on y =  force due to its own weight + frictional force + applied force to the right

Thus, block x acts on block y with a force of 146.1 N

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The average shear stress developed in the shear plane where the collar A and shaft are connected is 50.265 kPa.

The average shear stress can be calculated using the formula:

τ_avg = F / A

where F is the applied axial force of 5 kN and A is the shear area.

The shear area can be calculated using the formula:

A = π * d * t

where d is the diameter of the shaft (60 mm) and t is the thickness of the collar (15 mm).

Substituting the values, we get:

A = π * 60 * 15 * 10^-6 m^2

Calculating the average shear stress:

τ_avg = 5 kN / (π * 60 * 15 * 10^-6 m^2) = 50.265 kPa

Therefore, the average shear stress developed in the shear plane where the collar A and shaft are connected is 50.265 kPa.

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Answer:

yes.................

Answer:

maybe it is the first one

The two bare wires line up with the ground fault interrupter plug's two pins. The ground fault interrupter will off the power if the hot wire comes into contact with water, the ground fault interrupter will disconnect the circuit.

In the scenario when the hot wire provides a 120 VAC current source, the neutral wire provides the hot wire's return path.

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(1) The amount of work done by force of friction on the car is  19,688 J.

(2) The potential energy of the rock  is 352.8 J.

The amount of work done by force of friction on the car is calculated as follows;

W = Ff x d

where;

W = 428 N  x  46 m

W = 19,688 J

The potential energy of the rock  is calculated by applying the following formula as shown below.

P.E = mgh

where;

P.E = 12 x 9.8 x 3

P.E = 352.8 J

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Answer:

None of the animals are from the same species

Explanation:

The exact question is as follows :

Given -

Felis catus

Sylvilagus audubonii

Parus inornatus

Euarctos americanus

Check out the list of scientific names. These names all represent animals. These are all animals but they cannot reproduce to produce fertile offspring with each other.

To find - What conclusion can be drawn from the past statement?

Solution -

The conclusion we can made from past statement is that - None of the animals are from the same species

Reason -

When two members of the same species reproduce, they produce fertile offspring.

According to the scientific names of the animals, there are different genus and species names.

Unit vectors in three-dimensional space have certain properties that are useful in many applications, such as physics, engineering, and computer graphics. These properties include linear independence, orthogonality, and relationships between dot and cross products.

In three-dimensional space, unit vectors are vectors with a magnitude of 1. Therefore, the following statements are true:

1. Any two distinct unit vectors are linearly independent.

2. The cross product of any two distinct unit vectors is also a unit vector that is orthogonal to both.

3. The sum of any two unit vectors may or may not be a unit vector, depending on the angle between them.

4. The dot product of any two unit vectors is equal to the cosine of the angle between them.

In summary, unit vectors in three-dimensional space have certain properties that are useful in many applications, such as physics, engineering, and computer graphics. These properties include linear independence, orthogonality, and relationships between dot and cross products. Understanding these properties can help in solving problems involving vectors and three-dimensional geometry.

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Answer:

r = 50.47 x 10³ m = 50.47 km

Explanation:

Using the formula for the acceleration due to gravity:

\(g = \frac{Gm}{r^2}\)

where,

g = acceleration due to gravity on the surface of asteroid = 0.0288 m/s²

G = Universal Gravitational Constant = 6.67 x 10⁻¹¹ Nm²/kg²

m= mass of asteroid = 1.1 x 10¹⁸ kg

r = radius of asteroid = ?

Therefore,

\(0.0288\ m/s^2 = \frac{(6.67\ x\ 10^{-11}\ Nm^2/kg^2)(1.1\ x\ 10^{18}\ kg)}{r^2} \\\\r = \sqrt{\frac{(6.67\ x\ 10^{-11}\ Nm^2/kg^2)(1.1\ x\ 10^{18}\ kg)}{0.0288\ m/s^2}}\)

r = 50.47 x 10³ m = 50.47 km

Answer:

5.05x10^4

Explanation:

g=(GM)/r^2, so

.0288=(6.67x10^-11*1.10x10^18)/r^2, r=5.05x10^4.

This is correct on Acellus.

The thing to do here is to balance the eqns that is to balance the stoichometric ratios or coefficients of the cpds.

hope you understand. all the best.

A rocket can change direction in space by utilizing the principle of conservation of momentum and employing various propulsion techniques.

Newton's third law states that for every action, there is an equal and opposite reaction. Rockets take advantage of this principle by expelling high-velocity exhaust gases in one direction, resulting in a reactive force that propels the rocket in the opposite direction, allowing it to change its direction of motion.

To change direction, a rocket can use thrusters or engine gimballing. Thrusters are small engines that can be fired in different directions to provide the necessary force for altering the rocket's path. Engine gimballing involves swiveling the rocket engine, allowing the exhaust gases to be expelled at an angle, thus changing the direction of the rocket.

Another method involves gravity assists or slingshot maneuvers. By utilizing the gravitational pull of celestial bodies, such as planets or moons, a spacecraft can change its trajectory and direction. The spacecraft can perform a carefully calculated flyby, using the gravity of the celestial body to gain speed or alter its trajectory.

In summary, rockets change direction in space by utilizing the principles of conservation of momentum, Newton's third law, and employing techniques like thrusters, engine gimballing, or gravity assists. These methods enable the spacecraft to alter its course and navigate effectively even in the vacuum of space.

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Answer:it takes approximately 148.8 seconds to achieve. The average person in a free-fall will hit the ground going at 9.66 m/s from the top of the Empire State Building.

Explanation:

Answer:1,000,000 Kids

Explanation:Dragon

Answer:

Approximately \(2.69\; {\rm A}\).

Explanation:

Ensure that all values are measured in standard units. Charge should be measured in coulombs, while time should be measured in seconds:

\(\begin{aligned}t &= 3.0\; {\rm hr} \times \frac{3600\; {\rm s}}{1\; {\rm hr}} = 10800\; {\rm s}\end{aligned}\).

Electric current \(I\) is the rate of flow of electric charge.

In order to find the electric current, divide electric charge \(q\) by the time \(t\) required to transfer these charge. If charge \(q\!\) is measured in coulombs and time \(t\!\) is measured in seconds, the unit of current \(I\)would be amperes:

\(\begin{aligned}I & = \frac{q}{t} \\ &= \frac{29000\; {\rm C}}{10800\; {\rm s}} \approx 2.69\; {\rm A}\end{aligned}\).

The characteristics of the electric fields that have variable strength with the voltage suppressed allow us to find how a pattern is formed and how two signals can be synchronized in the oscilloscope.

     1) The pattern is a copy of the voltage pattern applied to the plates

    2) The Stacionary pattern is adidition of the signal to be measured and a perpendicular saw signal synchronized, .

1)  The electric field is an area of ​​space where there is an electric force, in this area any electric charge that enters undergoes a Coulomb force.

                F = q E

Where F is the force, q the charge and E the electric field.

The electric field created by two parallel deflection plates is uniform and moves an electric charge. If the voltage of the plates is controlled, the position of the charges can be controlled when they reach the screen, in general the screens are fluorescent, the emission time is long. As we move the voltage we will see a pattern determined by the pattern of the voltage change.

2)  An oscilloscope is an extremely useful instrument that has vertical channels for applied voltages and a horizontal channel where time is measured.

A sawtooth signal is applied to the horizontal channel. The periodic signal to be measured and the sawtooth signal are additing and must comply with the fact that they start at the same point, in general zero voltage and that the maximum of the two coincide, this causes the signal in each cycle to repeat and overlap the above showing a single measurement signal.

With the characteristics of the electric fields we can find how a pattern is formed and how two signals can be synchronized in the oscilloscope.

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Answer:

There is some sort of "rollers" on the trail part that is used to make the roller coaster move when it is going up. Then because of that, the speed gets quicker when it drops down, so then it could move for a longer time until it reaches the next arch.

Explanation:

hope this helps :)

The time cannot be calculated without those values but if we take R= 1 and C= 1, the switch opens at almost 4 milliseconds according to the question.

The time constant, τ, of the RC circuit would be τ = R × C = 1 × 1 = 1 (Where R denotes the resistance and C the capacitance).

The time it takes for the energy stored in the capacitor to fall to 79% of its final value after the switch opens is approximately equal to

4 × τ = 4 × 1 = 4 milliseconds.

After the switch opens, it takes around 4 times for the energy stored in the capacitor to decrease to 79% of its final amount.

Therefore, knowing the values of R and C is necessary in order to calculate the time in milliseconds. The time cannot be calculated without those values.

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The following measurement means "no limitation". This measurement indicates the range of motion for wrist flexion, which is the movement of the wrist towards the palm of the hand.

What is wrist flexion?

Wrist flexion is the movement of the wrist towards the palm of the hand. It is the opposite movement of wrist extension, which is the movement of the wrist away from the palm of the hand. Wrist flexion is an important motion for many daily activities such as typing, writing, and holding objects.

What does 15-85 degrees of wrist flexion mean?

When measuring wrist flexion, the range of motion is measured in degrees. In this case, the measurement is 15-85 degrees. This means that the normal range of motion for wrist flexion is between 15 and 85 degrees. If the measurement falls within this range, then there is no limitation in wrist flexion. However, if the measurement falls outside of this range, then there may be a limitation in wrist flexion.A limitation in extension refers to a decreased range of motion when moving the wrist away from the palm of the hand. A limitation in flexion refers to a decreased range of motion when moving the wrist towards the palm of the hand. A limitation in both flexion and extension refers to a decreased range of motion in both movements.

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The temperature of the air determines how much energy does air molecules have, and we use thermometers to determine the temperature of the air molecules.

The temperature of the air around a person is known as air temperature, and it is commonly expressed in degrees Celsius (°C) or degrees Fahrenheit (°F). Thermocouples and thermistors have been utilised more recently, although mercury in glass thermometers have historically been used to measure it.

Devices that measure temperature or a temperature gradient are known as thermometers (the degree of hotness or coldness of an object). A thermometer contains two crucial components: a temperature sensor, which changes in response to changes in temperature (for example, the bulb of a mercury-in-glass thermometer or the pyrometric sensor in an infrared thermometer).

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Answer:

Acceleration would be \(1.96\) times the initial value.

Explanation:

The vehicle is in a centripetal motion as it rounds the circular curve. Acceleration of the vehicle during the motion would be:

\(\displaystyle a = \frac{v^{2}}{r}\),

Where:

In this question, \(r\) stays the same since the vehicle is rounding the same curve. Acceleration of the vehicle would be proportional to the square of velocity.

The new velocity of the vehicle is \((70 / 50)\) times the original one. Hence, the new acceleration would be \((70 / 50)^{2} = 1.96\) times the original value.

Answer:

B. heat and kinetic energy

Explanation:

Heat is a form of energy that flows with respect to temperature difference. Thus, heat energy would flow from an object with higher temperature to that at lower temperature. It generally cascades from a high temperature body to lower temperature body through a medium or when in contact.

Kinetic energy is the energy that is inherent in a moving object. Thus, it can be converted to other forms or transferred between objects. Example, a moving object can transfer part of its kinetic energy to an object at rest on collision. This may cause the motion of the initial stationary object.

Therefore, heat and kinetic energy can be used to describe transfer of energy to or from a substance.

Answer:

Edmond Locard

Explanation:

Hope this helps :)

L = I, where L is angular momentum, I is rotational inertia, and (the Greek letter omega) is angular velocity, is the formula for angular momentum.

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The brain is part of the central nervous system because it sends the signals out to the nerves.

option A.

The central nervous system is made up of the brain and spinal cord.

The brain controls how we think, learn, move, and feel.

The spinal cord carries messages back and forth between the brain and the nerves that run throughout the body.

Thus, we can conclude that the brain itself does not contain nerves, but it sends the signals out to the nerves hence it is part of the central nervous system.

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Answer:

An interval is a distinct measure of time or the physical or temporal distance between two things.

Explanation:

The force required if a pressure of 5Pa is exerted on an area of 15m² is 75N.

Pressure is a force applied to a surface. It is measured in Pascals denotes by Pa. It can also be defined as the physical force exerted on an object.

The force applied is perpendicular to the surface of objects per unit area. The formula for calculating pressure is as follows:

Pressure = Force ÷ Area

According to this question, the pressure of 5Pa is exerted on an area of 15m². The force required is as follows:

Force = 5Pa × 15m²

Force = 75N

Therefore, the force required is 75N

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(1.) The Phenomena of Refraction Occurs when a Ray (Here Light) enters a Relatively Denser or Rarer Medium and Due to the Change in Density, the Speed of the Incident Ray Decreases or Increases Respectively.

(2.) If a light ray projected through a diamond, the light would refract drastically.

The amount of lateral strain in a tension member can be calculated using Poisson's ratio.

To calculate the lateral strain, we can use the equation: ε_lateral = -ν * ε_longitudinal

Where:

ε_lateral = Lateral strain

ν = Poisson's ratio

ε_longitudinal = Longitudinal strain

Poisson's ratio (ν) is a material property that describes the ratio of lateral strain to longitudinal strain when a material is subjected to an axial load. It is defined as the negative ratio of the transverse strain to the longitudinal strain.

Calculating the lateral strain involves determining the longitudinal strain, which can be calculated using the equation:ε_longitudinal = ΔL / L

Where:

ε_longitudinal = Longitudinal strain

ΔL = Change in length of the tension member

L = Original length of the tension member

Once the longitudinal strain is calculated, we can use Poisson's ratio to determine the lateral strain by multiplying the longitudinal strain by the negative value of Poisson's ratio.

It is important to note that the lateral strain is typically very small compared to the longitudinal strain in a tension member, especially for materials with a low Poisson's ratio.

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