Do you believe a relationship between incident and reflected angles would occur even if the medium interface were curved, like a curved mirror?

Answer:

the gravity was pulling the cup to the front of the window even though the wind was pushing it the other way.

Explanation: the gravity must be strong

By using the Newton's first law of Motion, it can be explained why the coffee spilt all over the windshield. This is because there is gravitational force which acts upon it and it pushes the substances in the downward direction towards the Earth.

Newton's first law of Motion states that a body remains in the same state of rest or uniform motion in a straight line unless and until an external force is applied on it. This means that a body will not start moving by itself until and unless an external force acts on it.

In this case, lachance's daughter is trying to pick her coffee cup, the coffee cup at the windshield is spilt which makes it difficult for her to see. This is because, there is the gravitational force or gravity which is pulling the coffee cup to the front of the window even though the wind was pushing it in the other way.

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Answer:

340m/s

Explanation:

Given parameters:

Wavelength  = 2m

Frequency   = 170Hz

Unknown:

Velocity of the wave  = ?

Solution:

The velocity of the wave is the product of frequency and wavelength of the wave;

          V  = F λ

V is the velocity

 F is the frequency

λ is the wavelength

  Insert the parameters and solve;

          V = 2  x 170 = 340m/s

The velocity of the wave with the given wavelength and frequency is 340m/s.

Given the data in the question;

Velocity; \(v =\ ?\)

To determine the velocity of the wave, we use the expression for the relations between wavelength, frequency and speed.

\(\lambda = \frac{v}{f}\)

Where \(\lambda\) is wavelength, f is frequency and v is speed.

We substitute our given values into the equation

\(2m = \frac{v}{170s^{-1}}\\\\v = 2m * 170s^{-1}\\\\v = 340m/s\)

Therefore, the velocity of the wave with the given wavelength and frequency is 340m/s.

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The maximum speed of the block is 14.41m/s and the acceleration of the block at a position of 5.5 cm away from the equilibrium is 7.025m/s².

The spring has a mass 0.1 kg attached to it.

The value of the spring constant is 13.1N/m.

The amplitude of the spring is 11 cm.

The maximum speed is given by,

V = AW

A is the amplitude of the spring and W is the angular frequency which is given by,

so,

W = √(k/m)

Where,

K is the spring constant,

m is the mass of the block attached to the spring.

V = 13.1 x 0.11/0.1

V = 14.41 m/s.

Now, we know, the acceleration is given by,

a = -W²x

Where,

x is the distance from equilibrium position and W is the angular frequency of the spring,

We have to find the acceleration of the block at a distance of 5.5cm away from the equilibrium position.

So, putting the values accordingly.

a = (k/m)x

a = 13.1 x 0.055/0.1

a = 7.205m/s².

The acceleration of the block is 7.205 m/s²

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At 5.80 metres, a pole vaulter just clears the bar before tumbling to the ground. 3.70 103 j worth of potential energy is lost by the vaulter during the fall. The weight of the pole-vaulter is 3.70 × 10³ N (Newtons).

To determine the vaulter's weight, we can use the equation for potential energy:

ΔPE = mgh

Where ΔPE is the change in potential energy, m is the mass of the vaulter, g is the acceleration due to gravity, and h is the height.

Given:

ΔPE = -3.70 × 10³ J (negative value indicates a decrease in potential energy)

h = 5.80 m

Using the equation, we can rearrange it to solve for weight:

mgh = ΔPE

mg = ΔPE / h

Substituting the given values:

mg = (-3.70 × 10³ J) / 5.80 m

Solving for mg, we find:

mg = -6.38 × 10² kg·m/s²

Therefore, the vaulter's weight is approximately -6.38 × 10² N. The negative sign indicates that the weight acts in the opposite direction of the vaulter's motion, i.e., downward.

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The device that involves the use of plasma in technology is an arc welder. Plasma is used in a variety of technological applications. The correct option is A.

Arc welder involves the use of plasma in technology.

An arc welder is a welding tool that employs electricity to create an electrical discharge between an electrode and a base metal to generate heat. The heat generated by the arc is capable of melting and fusing metal parts.

The electrode is a metal wire that melts as the current passes through it, producing an arc that fuses the metal parts together.

Arc welding is widely used in the metalworking and construction industries due to its ability to create permanent and robust connections between metal parts.

The most common type of arc welding is stick welding, which employs a flux-covered electrode and an arc welder power source to generate an electrical arc that fuses metal parts together.

Other types of arc welding include TIG (Tungsten Inert Gas) welding and MIG (Metal Inert Gas) welding, which employ different types of electrodes and gas shields to generate an electrical arc that fuses metal parts together.

Plasma cutting is another technique that employs plasma in technology. Plasma cutting involves the use of a plasma torch to cut metal parts. The torch generates a plasma jet that melts and cuts the metal parts, leaving a clean and smooth cut.

Plasma cutting is widely used in the metalworking and construction industries due to its ability to cut metal parts quickly and accurately. Therefore, the correct option is arc welder.

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The distance from a 27 mw point source of electromagnetic waves where the electric field amplitude 0. 060 v/m will be 21.21 m .

Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields.

The highest point of a wave is known as 'crest' , whereas the lowest point is known as 'trough'. Electromagnetic waves can be split into a range of frequencies. This is known as the electromagnetic spectrum.

c = 3 * \(10^{8}\) m/s

∈ = 8.85 * \(10^{- 12}\) \(C^{2}\) / N/ \(m^{2}\)

E = 0. 060 v/m

I = P / 4π\(r^{2}\)

Also , I = c ∈ \(E^{2}\) /2

\(r^{2}\) = P / 4π I                                 equation 1

substituting the value of I in equation 1

\(r^{2}\) = 2 P / 4π (c ∈ \(E^{2}\) )

\(r^{2}\) = 2 * 27 * \(10^{-3}\) / 4 * 3.14 * 3 * \(10^{8}\) * 8.85 * \(10^{- 12}\)  * \((0.06)^{2}\)

r = 21.21 m

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The cylinder's diameter and length must be precisely determined to achieve the necessary performance for a given application.

A pneumatic shock absorber consists of a cylinder with a radius of 1.5 cm and a length that varies from a maximum of 30 cm. In the case of a pneumatic shock absorber, the cylinder's size is a crucial aspect of the design. Pneumatic shock absorbers function by moving air through the cylinder to slow and stabilize the motion of a vehicle or machine, dissipating energy and preventing damage to the system. The absorber's strength is determined by the pressure differential between the cylinder's internal and external pressures. It can vary according to the cylinder's diameter, length, and other factors. Therefore, the cylinder's size, including the radius and length, affects the shock absorber's overall strength and efficiency. The greater the cylinder's length and radius, the stronger the shock absorber and the more significant the system's ability to withstand shock.

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Answer:

MATTER is recognised through measure of MASS

MASS has no particular relation with Temperature

Temperature is a physical property of MATTER

Temperature is the measure of HEAT DENSITY in MATTER

HEAT is of mass being belonged to ENERGY MATTER, one of the three Fundamental categories of SPACE MATTER such as;

MEDIUM MATTER:- Made up of empty bubble like Vacuum Particles Spherical in STRUCTURE and Static with neither Linear nor Rotary dynamics. (Vacuum in the free space and the entrapped vacuum in elementary Particles )

ENERGY MATTER:- The same Vacuum Particles when projected out as Rays of Linear Dynamics are recognised as Energy Mater (Light Photons, Heat Photons, Electrons, Solar Wind etc.)

ATOMIC MATTER:- Made up of bubble like Spherical Particles in STRUCTURE of which Solidity is decided by the MASS of the Interior Rotary DYNAMIC system of subatomic particles. (Atoms, Atoms of the 10^15 dropped scale-Moola Atoms(Neutrinos)

HEAT is the speed slowed state of LIGHT

VACUUM is the speed lost state of the particles of ENERGY MATTER

HEAT is emerged and in contrary, disappeared from confined systems as ENTROPY due to the DYNAMICS in Contraction & Expansion

A combining form for lungs is  "pneum/o".

In medical terminology, a combining form is a word part that is added to the beginning or end of a root word to modify its meaning. The combining form "pneum/o" is used to refer to the lungs, air, or respiration.

Some common medical terms that use the combining form "pneum/o" include:

Pneumonia: An infection of the lungs that can cause inflammation, coughing, and difficulty breathing.

Pneumothorax: A condition in which air leaks into the space between the lung and chest wall, causing the lung to collapse.

Pneumonectomy: A surgical procedure in which one or more lobes of the lung are removed.

Pneumology: The study of the lungs and respiratory system.

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The law of conservation of energy

Energy cannot be created or destroyed, but it can be changed from one form to another.

KE + PE = constant

The plates become sufficiently stable by convection. The almost liquid rocks are moved by the convection currents' growing heat, hence option C is correct.

Rocks flex under the pressure of convection until they entirely fracture. Radiation decay in the core causes convection currents, which are produced by heat rising and sinking inside the mantle.

In convection currents, the plates are moved. The separation of plates occurs when convection currents split close to the Earth's crust.

Therefore, the convergence of convection currents causes plates to move in the same direction.

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Tms works by  : (c)   passing an electric current through a wire coil into the brain whose shape determines the properties and the size of the resulting magnetic field.

What is the TMS's mechanism of action?

By introducing a brief capacitor discharge of electrical current into a stimulated coil, which then generates a magnetic field and induces neural cell membrane potentials, transcranial magnetic stimulation (TMS) is a flexible technique that non-invasively modifies neural processing in the brain.

This coil emits magnetic pulses that activate the brain's mood-control and depressive disorder-related nerve cells. It is believed to stimulate brain areas whose activity declines during depression. Similar to an MRI scanner, the majority of TMS magnets produce magnetic fields that are 1.5T to 2T in strength. However, because the TMS magnet is so much smaller than an MRI, the magnetic field's surface area is considerably less.

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Answer:

4.8 A

Explanation:

Voltage = current x resistance

(V = IR)

12 = I (0.5 +2)

I = 4.8 A

Answer:

I believe the answer would be kinetic energy to thermal energy.

Explanation:

Thermal energy is the heat of the brakes, and the kinetic energy would be when the car is in motion before stopping.

Answer:

true

Explanation:

Answer: True

Explanation:

Answer:

Although both metals had the same mass, the silver had a larger volume; therefore, it displaced more water than did the gold. That's because the silver was less dense than gold.

Explanation:

Answer:

this is ur answer

Answer:

a. Liquid state

b. At point R. The physical state of water at its boiling point temperature of 100 degree Celsius will be both liquid state as well as gaseous state.

c. at 110 degrees it is in gaseous state

Given data:

* the displacement of the box in the horizontal direction is 5 m.

* The force applied on the box at an angle of 45 degree is 20 N.

Solution:

The representation of the given system is,

The work done by the force during the displacement is,

Substituting the known values,

Thus, the work done on the box by the force F during the given displacement is 70.71 J.

The speed of the block after 3.4 m is 2.68 m/s. Speed can be defined as the change in the position of an object over time.

The position of an object changes with time, and this is what is meant by speed.

Calculate the acceleration first,

Vf²- Vi²=2aΔs,

Where,

Vf is final speed = 3.80 m/s

Vi is initial speed = 0

Δs is Distance traveled = 7.4 mm

A is acceleration

Fill out the formula with the values,

Vf²- Vi²=2aΔs,

(3.80 m/s)² - 0² = 2xa x6.8 mm

1.061 m/s² = a

Put the value of acceleration,

Vf²- Vi²=2aΔs,- Vi²=2aΔs

Vf²= 2aΔs + Vi²

Vf² =  2x 1.061 m/s² x 3.4mm + 0²

Vf²= 7.22

Vf=2.68 m/s

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The potential difference between xi=20cmxi=20cm and xf=40cmxf=40cm in the uniform electric field ex=3000v/mex=3000v/m is 60V.

What is the electric field?

The electric field is a field that has an effect on electrically charged objects within the field. When electrically charged particles interact with the electric field, they experience a force. The force is proportional to the electric charge on the particle and the electric field strength.

What is the potential difference?

The potential difference is the difference in electric potential between two points in an electric field. The electric potential difference is calculated by subtracting the electric potential at the initial point from the electric potential at the final point. Mathematically, it is represented as ΔV = Vf - Vi.

Given that the electric field ex = 3000V/m.

The potential difference between xi = 20cm and xf = 40cm can be calculated as follows:

Given that xf = 40cm and xi = 20cm, the Potential difference, ΔV = Vf - Vi.

The potential difference can be calculated as ΔV = ExΔxΔV = 3000V/m (40cm - 20cm)ΔV = 3000V/m (0.2m)ΔV = 600VTherefore, the potential difference between xi = 20cm and xf = 40cm in the uniform electric field ex = 3000V/m is 60V.

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The mechanical energy of the oscillator is lost in each cycle is 3.06%

The mechanical energy lost by the oscillator per cycle can be found using the given information that the amplitude of a lightly damped oscillator decreases by 3.06% during each cycle. Thus, the percentage of mechanical energy lost in each cycle can be given as follows: Damping factorβ = 0.0306 per cycle

Therefore, the mechanical energy lost per cycle is given by:

Mechanical energy lost per cycle = β × Initial mechanical energy= 0.0306 × Initial mechanical energy

Therefore, the percentage of mechanical energy lost per cycle is given by:

Percentage of mechanical energy lost per cycle = Mechanical energy lost per cycle × 100 / Initial mechanical energy= (0.0306 × Initial mechanical energy) × 100 / Initial mechanical energy= 3.06%.

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The Yaesu FTM-300DR's optional wires-X connection cable kit is the SCU-39. The cables and adapters needed to use the wires-X digital communication mode and link the transceiver to a PC are included in this kit.

WIRES-X. An Internet communication system called WIRES (Wide-coverage Internet Repeater Enhancement System) increases the range of amateur radio communication. In WIRES-X, the wireless communication is connected to the Internet through the use of an amateur node station acting as an access point.

Requires a transceiver with the Yaesu C4FM Portable Digital Node capability (FT5D, FT3D, FT2D, FTM-400XD, FTM-300D, FTM-200D, FTM-100D: as of 8/2021 or Firmware update, FTM-400D: Requires Firmware update), a USB connection cable, and a computer with the WIRES-X software and WIRES-X.

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Explanation:

If u mix 1g of salt with 100 ml of water, both dissolves but at the same time the mass of the solution increases.

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants. The law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses, such the amount of gas consumed or produced during a reaction

Answer:

The law of conservation of mass was crucial to the progression of chemistry, as it helped scientists understand that substances did not disappear as result of a reaction as they may appear to do; rather, they transform into another substance of equal mass.

Explanation:

The horizontal distance travelled by the football is 3.1 m.

The angle of projection of the football is calculated as follows;

tan ( θ ) = Vy / Vx

where;

tan ( θ ) = 5 / 3

tan ( θ ) = 1.667

θ = arc tan (1.667)

θ = 59⁰

The resultant velocity of the ball is calculated as follows;

v = √ (Vx² + Vy²)

v = √ (3² + 5²)

v = 5.83 m/s

The horizontal distance travelled by the football is calculated as follows;

x = v² sin(2θ) /g

where;

x = [ (5.83)² sin(2 x 59) /9.8 ]

x = 3.1 m

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The recommended dietary protein intake for individuals, including athletes, can vary depending on factors such as age, sex, activity level, and specific goals. However, a commonly used guideline for protein intake is to consume around 0.8 grams of protein per kilogram of body weight per day for the general population.

Using this guideline, we can calculate the minimum protein requirement for the 54kg female athlete:
Minimum protein requirement = 0.8 grams/kg/day × body weight
Minimum protein requirement = 0.8 grams/kg/day × 54 kg
Minimum protein requirement = 43.2 grams/day
Therefore, the minimum protein requirement for the 54kg female athlete would be

.
Based on the provided answer options, none of them match the calculated minimum protein requirement.

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