A 81.1 W monochromatic lamp that is 14.8% efficient produces photons with wavelength 957 nm. Find the number of photons emitted by this lamp each second.

Q: Electrical Energy is the energy of: A) Protons B) Neutrons C) Electrons D) All the above

A: Electrical Energy is the energy of: A) Protons B) Neutrons C) Electrons D) All the above

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A: Given : Resistance (R) = 10 ohms Voltage (V) = 110 V

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Q: Computed Voltage, Volts Measured Voltage, Volts 1.8 V 1.8 V 8.25 V 7.8 V 10 V 9.6 V Computed…

A: The measured values of voltage and current may be different from their calculated values due to any…

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A: For an unbiased coin, it has probability one half when it comes up head and probability one half…

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Q: Q4. Convert these into proper vector notation: Westward velocity of 42 km/h. Position 6.5 measured…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Ftens 30 N Frens-30 N 45 Based on this diagram, the weight of the picture = O 21.2 N O 25.5 N O 32.8…

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Q: What energy powers a lightbulb? A. Electrical B. Sound C. Mechanical D. Heat

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Q: Frick's law

A: Frick's law states that the diffusion of particles from the higher concentration region to a lower…

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Q: What is the equivalent resistance of a 200 Ohm and an 800 Ohm resistor connected in parallel?

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Q: What is the current in a DC circuit with 120-volts and a 60-watt light bulb?

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Q: Cam energy be created

A: Law of conservation of energy states that

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A: A projectile is any object thrown into space upon which the only acting force is gravity. The…

Q: is the flow of an electric charge through a conductor.   a) Thermodynamic temperature b) Luminous…

A: Answer ___ is the flow of an electric charge through a conductor

Q: A flashlight bulb uses 15 watts at a voltage of 12 volts. Calculate the current (in amps) used by…

A:

Q: A lamp operated at 118V with a current of 0.58A. What is the lamp’s resistance to two decimal places

A: Given,  lamp operated at 118V  so v=118 volt current=i=0.58 Ohm Let R be the lamp resistance From…

Q: A 10.-kilogram rubber block is pulled horizontally at constant velocity across a sheet of ice.…

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Q: What is the current draw for ceiling fan/light

A: Given: To determine the current that is drawn from the ceiling fan/light as follows,

Q: A resistance of 30 ohms is connected to a 15 V battery calculate the heat energy in joules generated…

A: Given data :               Voltage  =  V               Time  =  t               Resistance  =  R…

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A: Given that the magnetic field is describes by the formula, at z=y, The area of a strip is given…

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Q: The rate at which electric work is done called

A: The rate at which the work is done is called power. The unit of power is watt.

Q: Astone is thrown upward from a cliff at an angle of 35 degrees above the horizont with a speed of 47…

A: Height of cliff can be found by using equation of motion .

Q: Can 10 20 20 resultant be zero?

A: The sum of the first two sides should be greater than or equal to the third side. a+b≥c  Here…

Q: Ohm’s law is a fundamental law of nature. State true or false. a) True b) False

A: B

Q: Calculate the current in a 1500-W hairdryer when it is plugged in to 120 V.

A: Power in hairdryer:P=I2RP=VIso,v2R=VIwhere I=currentV=voltage=120 vP=power=1500 w

Q: 2. Explain the different types display devices with a neat diagram.

A: A display device is used to present information in visual or tactile form. Electronic visual…

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Q: A 20-kg roll of paper, originally at rest, is pin supported at its ends to bracket AB. The roll rest…

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Q: The application of physics in the field of Occupational Safety and Health (OSH).

A: The importance of occupational health and safety cannot be overstated. For the promotion and…

Q: RTD is a temperature and speed

A: RTD is a Resistance Temperature Detector . RTD is a temperature sensor. Working principle of RTD is…

Q: if A=3i-2j B=-i-4j find : a) diecrtion of A b) direction of B

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