PHYSICS HIGH SCHOOL

How do you complete this mixed circuit?
How do you complete this mixed circuit? - 1

Answers

Answer 1
Answer:

For the resistor closest to the battery, drawn vertical in the diagram, I = 8 A and P = 320 watts.

Also, the battery voltage is 40 V.

There isn't enough information included in the picture to fill in any of the missing items for the other two resistors.

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How do the speeds v0, v1, and v2 (at times t0, t1, and t2) compare?a: v0 = v1 = v2 > 0b: v0 = v2 > v1 = 0c: v0 = v2 > v1 > 0d: v0 > v1 > v2 > 0e: v0 > v2 > v1 = 0

How are the types of energy in the electromagnetic spectrum defined? (Points : 3)by their atomic structure

by their color

by their amplitude

by their wavelength

Answers

The energy associated with the electromagnetic spectrum is given by the wavelength of the spectrum.

Further Explanation:

The electromagnetic waves are the waves which travel through the space and do not require any medium for their propagation. The Electromagnetic waves are the waves which are transverse in nature.

There are several waves of various wavelength and frequency present in the Electromagnetic spectrum. The different waves present in the electromagnetic spectrum are:

  • Gamma rays.
  • X-rays.
  • Ultraviolet rays.
  • Visible rays.
  • Infrared rays.
  • Micro waves.
  • Radio waves.

The wavelength and the frequency of the electromagnetic waves are the key properties of the wave which describe several other parameters of the waves like intensity, power, energy of the wave etc.

The energy associated with the electromagnetic radiation is given by:

 E=\frac{{hc}}{\lambda}

Here, E  is the energy of the radiation, h  is the plank’s constant, c  is the speed of the light and \lambda  is the wavelength of the radiation.

Therefore, the above expression shows that the energy of the electromagnetic spectrum depends on the wavelength of the spectrum.

Thus, Option (d) is correct. The energy of the electromagnetic spectrum is defined by their wavelength.

Learn More:

1. What is the threshold frequency ν0 of cesium brainly.com/question/6953278

2. Calculate the wavelength of an electron (m = 9.11 × 10-28 g) moving at 3.66 × 106 m/s brainly.com/question/1979815

3. What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays brainly.com/question/9059731

Answer Details:

Grade: High School

Subject: Physics

Physics: Electromagnetic spectrum

Keywords:

Electromagnetic spectrum, energy, frequency, wavelength, radiation, speed of light, defined by their wavelength, E=hc/lamda, waves, transverse nature.

The correct answer to the question is : C) By their wavelength

EXPLANATION:

Before going to answer this question, first we have to understand the electromagnetic spectrum.

An electromagnetic wave is the transverse wave which contains time varying electric field and magnetic field which are perpendicular to each other as well as perpendicular to the direction of propagation.

There are various electromagnetic waves which are named as gamma ray, X-ray, U.V ray, visible light, infrared wave, micro wave and radio waves respectively. Out of these waves, only visible light can be visualized by human eye.

Every electromagnetic wave is characterized by its wavelength. Different waves have different range of wavelength.

The electromagnetic spectrum is the the arrangement of electromagnetic waves either in ascending order of wavelength or in descending order.

The gamma ray has the minimum wavelength in the spectrum, and radio wave has the maximum wavelength.

The energy carried by electromagnetic waves having wavelength \lambda is calculated as-

                  Energy = (hc)/(\lambda)

Here, c is the velocity of light and h is the Planck' s constant.

Hence, the correct answer to the question is wavelength which will signify the energy of different types of electromagnetic waves.

Develop a mnemonic for branches of physics.

Answers

Answer:

  1. For physics, a common mnemonic is "My Very Earnest Mother Just Served Us Nine Pizzas" to help remember the order of the planets in our solar system (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto).
  2. "SOH CAH TOA" - This helps remember the trigonometric ratios in a right triangle: Sine = Opposite/Hypotenuse, Cosine = Adjacent/Hypotenuse, Tangent = Opposite/Adjacent.
  3. "King Henry Died Drinking Chocolate Milk" - This is used to remember the metric system prefixes in order of magnitude: Kilo, Hecto, Deca, (Base Unit), Deci, Centi, Milli.
  4. "ROY G. BIV" - This helps remember the colors of the visible light spectrum: Red, Orange, Yellow, Green, Blue, Indigo, Violet.
  5. "F = ma" - This equation represents Newton's second law of motion, stating that Force equals mass times acceleration.
  6. "E = mc²" - This equation represents Einstein's theory of relativity, stating that Energy equals mass times the speed of light squared.
  7. "PEMDAS" - This mnemonic helps remember the order of operations in math: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).
  8. "VIRUS" - This helps remember the formula for Ohm's Law: V (Voltage) = I (Current) x R (Resistance) or V = IR.
  9. "KE = 1/2 mv²" - This mnemonic represents the formula for kinetic energy: Kinetic Energy = 1/2 x mass x velocity squared.
  10. "PE = mgh" - This helps remember the formula for gravitational potential energy: Potential Energy = mass x gravitational acceleration x height.
  11. "F = G(m₁m₂/r²)" - This mnemonic represents Newton's law of universal gravitation, where F is the force between two masses, G is the gravitational constant, m₁ and m₂ are the masses, and r is the distance between the centers of the masses.
  12. "P = IV" - This mnemonic helps remember the formula for power in an electrical circuit: Power = Current x Voltage.
  13. "E = hf" - This represents the formula for energy of a photon, where E is energy, h is Planck's constant, and f is the frequency of the electromagnetic wave.

Convert 1 mm of Hg into pascal

Answers

1 millimeter of mercury is 133.322 pascals

A thin rod rotates at a constant angular speed. Consider the tangential speed of each point on the rod for the case when the axis of rotation is perpendicular to the rod at its center and at one end. Explain for each case whether there are any points on the rod that have the same tangential speeds.

Answers

Answer:

    v = R w    

With this expression we see that for each point at different radius the tangential velocity is different

Explanation:

They indicate that the angular velocity is constant, that is

            w = dθ / dt

Where θ is the radius swept angle and t the time taken.

The tangential velocity is linear or

           v = dx / dt

Where x is the distance traveled in time (t)

 

In the definition of radians

          θ = s / R

Where s is the arc traveled and R the radius vector from the pivot point, if the angle is small the arc (s) and the length (x) are almost equal

         θ = x / R

We substitute in the speed equation

         v = d (θ R) / dt

The radius is a constant for each point

         v = R dθ / dt

         v = R w

With this expression we see that for each point at different radius the tangential velocity is different

What if a wave reaches a type of matter it cannot pass through? Does
it just stop moving? If not, where does
it go?

Answers

It is bounced back. Like echoing, it's basically the sound wave hitting the matter it can't go through and bounce back.
if it hit the matter that it cannot pass through.....according to the velocity of wave..it might get reflected back....we can find sound waves reflecting back in closed rooms...because of the presence of the matter through which it cannot pass....and...it's because of this tht...echo is observed 

Emotional abuse is less harmful than physical abuse.
a. True
b. False

Answers

B) False
 There is emerging evidence that emotional abuse is in fact, more harmful, than physical abuse. A study conducted by the Trauma Center at the Justice Resource Institute shows that because of the long-term nature of emotional and psychological abuse, victims score higher on a measure of a variety of negative risk factors and behaviors.

False, just because it's not physical, doesn't mean it's any less harmful than emotional.
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