Explain the conditions for total internal reflection. (A) The conditions for total internal reflection are the the light is travelling from an optically denser medium (higher refractive index) to an optically less dense medium (lower refractive index) and that the angle of incidence is greater than the critical angle. (B) The angle of incidence in the denser medium must be greater than the critical angle for that pair of media. The ray of light must travel from a denser medium into a rarer medium. (C) The change in direction of a wave at a boundary between two different media, so that the wave moves back into the medium it came from. (D) This phenomenon is known as refraction. Snell's Law states that the ratio of the angles of incidence and refraction is equal to the inverse ratio of the indices of refraction.

Q: Give example of each class of lever in human body.

A: Step 1A lever is generally a rigid object used to make it easier to move.  There are three classes…

Q: Judy exercises for 15 minutes and uses up 185 kJ of energy. Her efficiency of pedaling is 35% A.…

A: The efficiency of pedaling is calculated as the ratio of output energy to the input energy, that is…

Q: About how many cups of coffee you make with 569,600 J of energy

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Q: An 83kg man eats a banana of energy content 1.00x10^3 kcal. If all of the energy from the banana is…

A: Given that:-Mass, m=83 kgEnergy, E=1.00×103 kCalInitial velocity, v0=0 m/swe know…

Q: You and a friend are walking across a grassy field and a rain storm is coming.  Suddenly all your…

A: You and your friend are walking outside and a rain storm is coming . If suddenly all your hairs…

Q: Outline the physical activity recommendations for older adults who cannot do the regular adult…

A: We have to outline the physical activity recommendations for older adults who cannot do the regular…

Q: A 68-kg woman is planning to bicycle for an hour. If she is to meet her entire energy needs while…

A: A 68-kg woman is planning to bicycle for an hour. If she is to meet her entire energy needs while…

Q: What is source of energy in sunshine?

A: It makes great effect to understand how the Sun can put out so much energy for so long.

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Q: 9. If it requires 10.0 J of work to stretch a particular spring by 20 mm from its equilibrium…

A:

Q: What sort of energy does flying bird posses?

A: Kinetic energy and potential energy

Q: means the repair work done to keep the system in good working condition.

A: To determine: What means the repair work done to keep the system in good working condition.

Q: Flapping flight is very energy intensive. A wind tunnel test on an 89 g starling showed that the…

A:

Q: Imagine a sinking ship with 15 people. There are two lifeboats. One lifeboat can fit 9 people and…

A: Answer a. No, the lottery wouldn't be an ethically acceptable way of determining access to resources…

Q: what is physical form of energy.

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Q: A PHYS 1510 student was working on a robotics project. The joints on the machine they were building…

A:

Q: . At the first stage of a roller coaster ride, the 1200kg roller coaster ends up 50 m above its…

A: Mass of the roller coaster(m)=1200kg Height(h)=50m

Q: https://www.compadre.org/PQP/applications/prob14_5.cfm

A: Step 1:Step 2:Step 3: Step 4:

Q: o explain Why, climbing a set of stairs either by walking up or by running up requires approximately…

A: Metabolic energy is the energy used by the body in a particular activity. It depends on size of the…

Q: Which could use up more energy A. Running a distance of 1.4 kilometers of 7.4 m/s which uses up…

A: distance = speed x time  Energy = power x time

Q: Define the term potential energy of a body. Name its two forms and give one example of each.

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Q: The energy a body has by virtue of its location is known as

A: Asked: What the energy of a body due to virtue of its location known.

Q: demonstrates a direct energy transfer? demonstrates a direct energy transfer? When the traffic…

A:

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Q: 20- Under resting conditions, the body energy which is being used by the brain is 19%. true false

A:

Q: A body in motion essentially acquires A) Kinetic energy B) Potential energy C) Mechanical energy D)…

A: Kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the…

Q: A 45 watt light bulb runs for 78 seconds. How much energy does it use?

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Q: Define kilowatt-hour and state its value in SI unit?

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Q: As a steel beam is winched up to the top floor of a new building, the mechanical energy is being…

A: The mechanical energy used to lift the steal beam helps it in lifting to top floor.

Q: Giant electric eels can deliver a voltage shock of 5.00 × 10² V and up to 1.00 A of current for a…

A:

Q: A 100 watt light bulb runs for 120 seconds. How much energy does it use?

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Q: What various forms of energy are present as you shoot a bow and arrow?

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Q: The energy a body has by virtue of its location is known as .

A: Required: The name of energy of a body that is due to virtue of its location

Q: The energy a body has by virtue of its motion is known as .

A: The energy a body by virtue of its motion is known as kinetic Energy.

Q: Dimitris car has a fuel efficiency of 21 miles per gallon. His tank is full with 12 gallons of gas.…

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Fluid Pressure

The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.

Gauge Pressure

Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.