In which scenario does radiation occur? warming soup on a stove drying towels at the beach cooking eggs in boiling water warming a sore muscle with a hot pack

The speed of the wind from the east with 3.7 m/s is pushing the paper airplane that flies with a velocity of 1.5 m/s north. Then the resultant velocity of the plane is 3.9 m/s.

Velocity is a physical quantity measuring the distance travelled by an object per unit time. It is a vector quantity thus characterized by a magnitude and direction.

The velocity of an object moving north relative to wind towards east can be expressed as a resultant velocity or relative velocity of the former as:

v = √v1² + v2²

Given v1 = 1.5 m/s

v2 = 3.7 m/s

then v = √1.5² + 3.7² = 3.9 m/s

Therefore, the total velocity of the paper airplane is 3.9 m/s.

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Explanation:

q = mCΔT

where m is mass,

C is specific heat capacity,

and ΔT is change in temperature.

Make sure all your units match.  Assuming the substance is water, C = 4186 J/kg/°C.

Trial 1:

q = (0.4 kg) (4186 J/kg/°C) (78°C)

q = 130,600 J

Trial 2:

q = (0.6 kg) (4186 J/kg/°C) (78°C)

q = 195,900 J

Trial 3:

q = (0.45 kg) (4186 J/kg/°C) (75°C)

q = 141,300 J

Developers provide a way of rewarding desired behaviours and penalizing undesirable behaviours in reinforcement learning.

Thus, In order to motivate the agent, this technique assigns positive values to desired activities and negative values to undesirable behaviours and learning.

This trains the agent to seek maximal overall reward over the long run in order to arrive at the best possible outcome.

The agent is prevented from stagnating on smaller tasks by these long-term objectives. The agent eventually learns to steer clear of the negative and look for the positive. Artificial intelligence (AI) has adopted this learning strategy as a technique to control unsupervised machine learning using rewards and penalties.

Thus, Developers provide a way of rewarding desired behaviours and penalizing undesirable behaviours in reinforcement learning.

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The type of cartilage that can withstand the strongest compression and tension forces is fibrocartilage.

Fibrocartilage is a type of cartilage that is found in areas of the body that are subjected to heavy loads and constant movement. It is made up of dense, fibrous tissue and is able to withstand strong compression and tension forces due to its unique structure.

Fibrocartilage is found in areas such as the intervertebral discs, pubic symphysis, and the knee joint. These areas are subjected to constant pressure and movement, and the fibrocartilage is able to absorb shock and distribute forces evenly. This helps to prevent damage to the surrounding tissues and ensures that the joint or area remains stable.

Fibrocartilage is also important in the healing process of certain injuries, such as a torn meniscus in the knee. When an injury occurs, the body will produce fibrocartilage to help repair the damaged tissue and stabilize the area.

In conclusion, fibrocartilage is the type of cartilage that is able to withstand the strongest compression and tension forces due to its dense, fibrous structure. It plays a crucial role in maintaining stability in areas of the body that are subjected to heavy loads and constant movement, and is also important in the healing process of certain injuries.

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Answer:

Air Resistance

Explanation:

Because air gives a much greater resistance to the falling motion of the feather than it does to the brick.

The physical pendulum consists of a meter stick that is pivoted at a small hole drilled through the stick a distance 0.056mfrom the 50 cm mark

The period of a physical pendulum is given by T = 2π √(L/g), where L is the length of the pendulum and g is the acceleration due to gravity. We can use this formula to find the distance d.

To find d, we use the formula:

T = 2π √(L/g)

Where T is the period, L is the length of the pendulum, and g is the acceleration due to gravity.

We know that T = 2.5 s, g = 9.8 \(m/s^2\) and L is the distance from the pivot point to the center of gravity of the pendulum which is the 50 cm mark on the meter stick, so L = 0.5m.

We can rearrange the formula to solve for d :

d = L * √(\(T^2/4$\pi^2\) -1/g)

With the given values we can substitute in the formula

d = 0.5* √(\(2.5^2/4$\pi^2\) -1/9.8)

d = 0.056m

Therefore, The distance d from the 50cm mark is approximately 0.056m.

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The minute hand of a clock has an angular speed of 0.0105 rad/s, and it moves with a counterclockwise direction. The angular acceleration vector of the minute hand is zero since it moves with a constant angular speed.

Given:

Amplitude (A) = 0.57 m

Velocity at equilibrium (v) = 2 m/s

To find:

A) Velocity (v) when KE is one-third of the total energy

B) Angular frequency (ω)

Solution:

The total energy of a block in SHM is given by the equation:

E = (1/2)kA²

where k is the spring constant and A is the amplitude.

At any point during SHM, the kinetic energy (KE) of the block is given by:

KE = (1/2)mv²

where m is the mass of the block and v is its velocity.

The potential energy (PE) of the block is given by:

PE = E - KE

At the equilibrium position, all the energy is potential energy, and at the ends of the oscillation, all the energy is kinetic.

Since the block is at the equilibrium position when it has a velocity of 2 m/s, its maximum velocity (v_max) can be found using the conservation of energy as follows:

Total energy = Potential energy at maximum displacement

(1/2)mv_max² + (1/2)kA² = (1/2)k(2A)²

Simplifying:

v_max = A√(k/m)

The angular frequency (ω) can be found using the formula:

ω = √(k/m)

Substituting the value of v_max in the above equation, we get:

ω = √(k/m) = v_max/A

A) To find the velocity (v) when KE is one-third of the total energy, we can use the conservation of energy as follows:

Total energy = KE + PE

(1/2)mv² + (1/2)kx² = (1/2)kA²

where x is the displacement of the block from the equilibrium position.

Since KE is one-third of the total energy, we can write:

(1/2)mv² = (1/3)(1/2)kA²

Simplifying:

v² = (1/3)(k/m)A²

Taking the square root of both sides:

v = √[(1/3)(k/m)]A

Substituting the value of ω, we get:

v = √[(1/3)ω²A²]

Substituting the given values of A and ω, we get:

v = √[(1/3)(k/m)(0.57)²]/(0.57)

v ≈ 1.48 m/s (rounded to two decimal places)

Therefore, the velocity of the block when its KE is one-third of the total energy is approximately 1.48 m/s.

B) Substituting the given values of A and v_max in the formula for ω, we get:

ω = v_max/A = A√(k/m)/A = √(k/m)

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Answer:

A vector in physics is a quantity that has both magnitude and direction.

Answer:

a line that usually veers and can be the result of force. Examples of Vector in a sentence. Military aviators study the vector between their aircraft and the enemy in order to calculate how to intercept.

Explanation:

Answer:

wave length is 1.2m

Explanation:

since formula of wave length is v/f

v(speed of sound in air at stp is 300ms^-1)

f(frequency 250hertz)

then wave length is 300÷250 which give 1.2m

Sound waves with a constant frequency of 250 hertz are traveling through air at stp. what is the wavelength of the sound waves is 1.32 m.

Wave is is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down. Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.

Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform. There are two types of the wave longitudinal wave and transverse wave. Longitudinal wave : in which, vibration of the medium (particle) is parallel to propagation of the wave. Sound wave is a longitudinal wave. Transverse wave : in which, vibration of the medium (particle) is perpendicular to propagation of the wave.

speed of the wave,

c = νλ

330 m/s = 250λ

λ = 330/250 = 1.32 m

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Answer:

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

\(v=\sqrt{a*r}\)

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

Explanation:

This is the formula for centripetal acceleration in terms of the tangential velocity (v) and the radius of the circular motion (r).  The expression for the acceleration is already given, so simply type it as shown:

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

For the velocity (v) multiply by "r" both sides and then use the square root to solve for v:

\(a*r=v^2\\v=\sqrt{a*r}\)

For the radius multiply both sides by r and then divide both sides by the acceleration (a) in order to isolate r completely:

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

a) The picture of the action from above and sketch the path of the car is shown below: We have to draw the two given velocity vectors where they occur on the path.  These are the 2 vectors: 25 m/s west 35 m/s north. The two given velocity vectors on the path are shown below:

b) The acceleration is given as a = (v2-v1)/t, where v2 is the final velocity, v1 is the initial velocity and t is the time. Given that the car is traveling west at 25 m/s and one minute later it is driving north at 35 m/s. Therefore the final velocity, v2 = 35 m/s and initial velocity, v1 = 25 m/s and time, t = 1 min = 60 seconds.

i) The graphical vector addition is shown below: Therefore, the approximate correct direction of average acceleration is towards the north-east.

ii) The chosen coordinate system is shown below:

Therefore, the component of velocity along the x-axis is 25 m/s (towards west) and the component of velocity along the y-axis is 35 m/s (towards north).Therefore, acceleration along x-axis, a_x = 0 and acceleration along y-axis, a_y = (v2 - v1)/t = (35-25)/60 = 1/6 m/s²Therefore, the average acceleration of the car over this one minute time interval is, a = (a_x² + a_y²)1/2 = (0² + (1/6)²)1/2 = 1/6 m/s².

iii) As magnitude and precise direction: The magnitude of acceleration, a = (v2 - v1)/t = (35-25)/60 = 1/6 m/s²The angle between the acceleration vector and the x-axis (in degrees) is given as tan⁻¹(a_y/a_x) = tan⁻¹(1/6/0) = 90°Therefore, the precise direction of average acceleration is towards north.

Therefore, the average acceleration of the car over this one minute time interval using the graphical vector addition is towards the north-east and as a magnitude and precise direction is towards the north. Also, the acceleration of the car over this one minute time interval with components relative to the chosen coordinate system is a_x = 0 and a_y = 1/6 m/s². The average acceleration in all the three cases is same and has a magnitude of 1/6 m/s² and the direction is towards the north.

Therefore, it is calculated that the average acceleration of the car over this one minute time interval is towards the north with a magnitude of 1/6 m/s² and is calculated by using three different methods. The chosen methods are graphical vector addition, components relative to a chosen coordinate system and as a magnitude and precise direction.

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Answer:

If a coin and a feather are dropped from the same height at the same time on the moon’s surface, they fall together. Ans: It is because Gravity of the moon is six times less than that of the earth, therefore coin and a feather are fall together.

The electric field created by a point charge is given by the equation E = k * (Q / \(r^{2}\)).The charge of object A is -1.11 × \(10^{-9}\) C (option b).

In this case, the electric field at point P is 40.0 N/C directed to the south. Since the field is directed towards the south, the charge of object A must be negative. Plugging the given values into the equation, we have:

40.0 N/C = (9 × \(10^{9}\) N \(m^2/C^2\)) * (Q / (0.250 \(m)^2)\)

Simplifying the equation, we can solve for Q:

Q = (40.0 N/C) * (0.250 \(m)^2\) / (9 × 10^9 N \(m^2/C^2)\)

Calculating the expression, we find Q ≈ -1.11 × \(10^{-9}\) C. Therefore, the charge of object A is approximately -1.11 × \(10^{-9}\) C, which corresponds to option b.

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Answer:

22/0.50=44

Explanation:

average speed= distance / time

To find the refractive index of medium 'Z' with respect to medium 'X' (n(Z/X)), we can use the formula:

n(Z/X) = n(Z/Y) * n(Y/X)

Given:

n(X/Y) = 2/3

n(Y/Z) = 4/3

Plugging these values into the formula, we get:

n(Z/X) = (4/3) * (2/3)

To simplify the expression, we multiply the numerators and denominators:

n(Z/X) = (4 * 2) / (3 * 3)

= 8 / 9

Therefore, the refractive index of medium 'Z' with respect to medium 'X' is 8/9.

Answer:

V = 0.87 volt

Explanation:

Given that,

Charge, \(q=7.3\times 10^{-17}\ C\)

Electric potential energy, \(U=6.4\times 10^{-17}\ J\)

We need to find the value of electric potential at a point. The relation is as follows :

\(V=\dfrac{U}{q}\)

Where

V is electric potential

So,

\(V=\dfrac{6.4\times 10^{-17}}{7.3\times 10^{-17}}\\\\V=0.87\ V\)

So, the value of the electric potential at a point is equal to 0.87 Volts.

Answer:

See the answers below.

Explanation:

The total power of the circuit is equal to the sum of the powers of each lamp.

\(P=60+100\\P=160 [W]\)

Now we have a voltage source equal to 240 [V], so by means of the following equation we can find the current circulating in the circuit.

\(P=V*I\)

where:

P = power [W]

V = voltage [V]

I = current [amp]

\(I = P/V\\I=160/240\\I=0.67 [amp]\)

So this is the answer for c) I = 0.67 [amp]

We know that the voltage of each lamp is 240 [V]. Therefore using ohm's law which is equal to the product of resistance by current we can find the voltage of each lamp.

a)

\(V=I*R\)

where:

V = voltage [V]

I = current [amp]

R = resistance [ohms]

Therefore we replace this equation in the first to have the current as a function of the resistance and not the voltage.

\(P=V*I\\and\\V = I*R\\P = (I*R)*I\\P=I^{2}*R\)

\(60 = (0.67)^{2}*R\\R_{60}=133.66[ohm] \\and\\100=(0.67)^{2} *R\\R_{100}=100/(0.66^{2} )\\R_{100}=225 [ohm]\)

b)

The effective resistance of a series circuit is equal to the sum of the resistors connected in series.

\(R = 133.66 + 225\\R = 358.67 [ohms]\)

To assess your health status, it is necessary to take the physical fitness test, which will determine how healthy you are, according to some questions, such as how often you have seen a doctor, how is your heart, etc.

Some sample questions to assess your health status are:

Therefore, the physical fitness test is necessary so that a person can perform physical activities safely, avoiding injuries and other associated risks.

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Answer:

23.63985719

Explanation:

pls dont ask it was painfull

The incident angle that light reflected from the surface of this glass completely polarized if the glass is immersed in air is called Polarization Angle.

Brewster's angle, also known as the polarization angle, is the incidence angle at which light with a specific polarization is perfectly transmitted through a clear dielectric surface without reflection. When unpolarized light strikes the surface at this angle, the light reflected from the surface is perfectly polarized. This unique incidence angle is named after the Scottish physicist Sir David Brewster (1781–1868).

Brewster's angle is commonly known as the "polarizing angle" because light that reflects from a surface at this angle is completely polarized perpendicular to the plane of incidence ("s-polarized"). Therefore, a glass plate or stack of glass plates placed at Brewster's angle in a light beam can function as a polarizer.

THE CONCEPT

The concept of a polarizing angle can be extended to the concept of a Brewster wave number in order to account for planar interfaces between two linear bianisotropic materials. In Brewster's angle reflection, the reflected and refracted rays are mutually perpendicular.

Brewster's angle can only exist for one of the incident wave polarizations in magnetic materials, as specified by the relative strengths of dielectric permittivity and magnetic permeability. This has ramifications for the presence of Brewster angles that are generalized for dielectric metasurfaces.

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Answer:

4.2 N. S

Explanation:

Impulse =Force X Time

                35 X 0.12

                 4.2 N

Maximum distance that it moves down is 26 cm, when block hangs at rest with the spring stretched by 13.0 cm.

In the formula, F = -k x :  k is called the spring constant and is a measure of the spring's stiffness. When a spring is stretched or compressed,  its length changes by an amount x from  equilibrium length, and then it exerts a force F = -kx in a direction towards the equilibrium position.

Given that the equilibrium position is 13 cm below the starting point. As motion is symmetric about the equilibrium position, so the two turning points are 26 cm apart.

13 *2 = 26cm

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Answer: He came up with this by using theories like  the photoelectric effect, the second offered experimental proof of the existence of atoms, and the third introduced the theory of special relativity.

Explanation: He was explaing the realationship between energy and mass.

Me: Hope this helps!!! May I have brainlist!?

Answer:

C) Mitochondrial DNA

Explanation:

Mitochondrial DNA can help forensic scientists in recovering the follicular tissue that is attached to the hair, they can find out the specific suspect from that hair.

Mitochondrial DNA is maternally inherited and enables forensic scientists to trace maternal lineage.

Answer:

Mitochondrial DNA

Explanation:

Mitochondrial DNA should be used to prove that the hair in the victim's fist belonged to a specific suspect. Mitochondrial DNA enables scientists to trace maternal lineage from which it can be known that who is the suspect.

The weight of the transformer is 138.46 N.

Weight can be calculated by dividing workdone by height

To calculate the weight of the transformer, we use the formula below.

Formula:

Where:

Substitute these values into equation 1

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The requried different types of electromagnetic radiation listed by frequency, in increasing order have been shown.

A wave is a disturbance or oscillation that travels through space and time, carrying energy from one place to another without permanently transporting matter.

Here,
Here are the different types of electromagnetic radiation listed by frequency, in increasing order:

Long-wavelength infrared radiation

Short-wavelength infrared light

Yellow photon

Greenlight

Microwave radiation

It's worth noting that a low-pitched sound wave is not a form of electromagnetic radiation, as it is a mechanical wave that requires a medium (such as air or water) to travel through, whereas electromagnetic radiation can travel through a vacuum.

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When working through these problems, think about the heat in terms of movement of the molecules of water.

Heat is transferred from the water to the surroundings --- water molecules slowing down.

Heat is transferred to the water from the surroundings --- water molecules heating up.

Heat transfer is the transfer of energy due to the difference of temperature between two different places. The main discussion in heat transfer is how the energy in heat can move places and the rate of transfer under certain conditions. Heat transfer includes the processes of inflow and outflow of heat. In industrial processes, heat transfer is used to achieve the required temperature in the industrial process and maintain the required temperature throughout the process.

Heat transfer from one object to another can occur by conduction, convection, and radiation. The determinant of heat transfer is the temperature difference. The direction of heat transfer starts from a medium with a high temperature to a medium with a lower temperature. Heat transfer can occur with a single process or multiple processes.

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Answer:

but I don't know what the answesorryr

Answer:

the force of attraction between them???

Answer:

answer

Explanation:

this is the answer with annotation and law