calculate the lighting efficiency of this bulb and determine whether this is more or less efficient than a traditional incandescent lightbulb.

Q: p glows red because

A: A neon lamp glows red because

Q: true or false. the red light has more energy than the green light

A:

Q: Which type of lighting system has the highest efficacy?

A: The expression for efficacy (E) is: E=Light produced in lumensEnergy consumed in watts

Q: 2 3 4 7. Using the diagram to the right, calculate the total resistance of the circuit, the current…

A: Ohm Law  V=IR and parallel circuit net resistance formula

Q: solar

A:

Q: We consider an object of mass m moving in one spatial dimension. We denote its position by r(t) in a…

A:

Q: Microwave is ______ in frequency than infrared.  (Lower,higher,shorter,and longer)

A: The frequency of microwave is from 10Hz (1GHz) to 100GHz.But the frequency range of infrared is from…

Q: An individual Si solar cell has an open-circuit voltage of 0.5-0.6 volts. What is the physical…

A: The open-circuit voltage of a silicon solar cell is the maximum voltage that can be generated by the…

Q: Q1 A) A 70 W bulb is on for one hour. Find the energy converted in 1. watthours 2. watt seconds 3.…

A: Given data The power of the bulb is P = 70 W The duration of the bulb in which it is on is t = 1 h

Q: It is 25 degrees before heating. After 26 seconds of heating it is 32 degrees. After 52 seconds it…

A: According to Newton's law of cooling (or heating), the time rate of change of temperature of a…

Q: 1-Consider an electric circuit comprised of a 10.0 2 resistor connected to an AC voltage source that…

A: Instantaneous voltage, ∆v = 18.0 sin(12.4πt)     - - - - - - -  (i)  Standard equation of…

Q: Mineral-insulated cables are not used in. O computers O smoke control systems O alarm circuits O…

A: Mineral insulated cables are made using copper conductors put inside sheath of copper. Inorganic…

Q: What is the wavelength of light if its frequency is 3.2 x 1014 hz?

A: Given data- frequency of light f=3.2 x 1014 hz

Q: Three rooms of a house contain lamps that have the following wattage: living room, 350 watts; dining…

A: Lamps have wattage:living room, 350 watts; dining room, 225 watts; bathroom, 175 watts.

Q: What would the power (Watts) be for a speaker if it draws 3.0 Amps of current when connected to a…

A: Given that, Current  I=3.0 A Voltage  V=12.0 V The expression for power is given by P=VI=12.0 V3.0…

Q: Light waves come in different wavelengths and frequencies. The color of the light we see is…

A: When the sunlight strikes on a falling drop of water the light get refracted, the light continues…

Q: 5. When an object is far away, a projectivity collapses into a perspectivity with only 6 degrees of…

A:

Q: if you turn on a 6w lamp how many seconds was it on if you applied 36000 j to it?

A: Power (P) = 6w Energy (E) = 36000J

Q: Why do fluorescent lamps in the Philippines flicker 60 times per second? Why can’t we see it…

A: Light flickering is the rapid change in brightness or intensity of the light over the time. It…

Q: Three balls with masses of 3.0 kg, 1.0 kg, and 2.0 kg are located at coordinates (5.5m,5.5m),…

A:

Q: If the speed of light in a medium is 204,081,633 m/s, what is the index of refraction of the medium?…

A:

Q: Lab Procedure Step 1) Watch the following videos to gain a better understanding of the conservation…

A: When the wheel with moment of inertia I has a nonzero angular velocity ω to begin with, then the…

Q: if a microwave of a radar system has wavelength of 1 mm, what is its frequency?

A:

Q: 11. Three kitchen appliances are used for varying amounts of time. A 1200 W microwave is operated…

A: We have to rank( Greatest to least) for the three kitchen appliances on the basis of their…

Q: Maria's torch uses 3 dry cells. how many volts does it need to operate?

A: Current is dependent on voltage between 2 terminals. This is called Ohm's law. More is the potential…

Q: car is moving towards a person at 0.02 km/s. The speed of light is 300,000 km/s. What speed would…

A: Given speed of car =0.02 km/s Speed of light = 300000 km/s

Q: rate of bubble production /bubbles number of bubbles distance of the light source from the plant/cm…

A: we consider distance of the light source along X-Axis, and rate of bubble production along Y-Axis.

Q: A radio station transmits radio waves with a frequency of 1200 kHz. What is the wavelength of the…

A: Given that; f=1200 kHz=12 ×105 Hzc=3×108 m/sλ=?

Q: How far will a beam of laser light travel in 59.5 nanoseconds? (1 nanosecond = 10-9 seconds) 1 x

A: we know that  distance =velocity*timeherev=c=3*108m/s and t=59.5nm

Q: If three resistors are connected across a 12V battery and the voltage drop across one resistor is 3V…

A: Given that,Voltage of battery :V=12 V  Voltage drop across one resistor : V1= 3 (V) Voltage drop…

Q: A microwave oven cooks food with microwaves of wavelength 17 cm. What is the frequency of these…

A: The relation between the wavelength and frequency is  f = cλ where, c is the velocity of light.

Q: The light bulbs at your new office operate at 3,459 K. Calculate the frequency in kHz that the…

A: Given,The operating temperature, T = 3459 KFrom Wien's displacement law,λmaxT = 2.898×10-3 mK

Q: Explain what lighting is

A: The light we refer to usually is known as the visible light. It is the electromagnetic radiation…