You are designing a solar car with a total roof area for solar cells of 6.4m². Calculate the electrical power available, assuming total cell efficiency of 17% and a constant light intensity of 980 W/ m².
Q: Consider the electromagnetic radiation inside a kiln, with a volume of 1 m3 and a temperature of…
A: Volume, V=1 m3 Temperature, T=1500 K Total energy of this radiation, U=8π5kT415hc3V where, k is…
Q: Evaluate the intensity of solar radiation for 27 August 2020, given solar constant (Isc) =1800 W/m2.
A:
Q: What pressure does light emitted uniformly in all directions from a 100-W incandescent light bulb…
A:
Q: The intensity of solar radiation at the top of Earth’s atmosphereis 1 370 W/m3. Assuming 60% of the…
A:
Q: When a particular solar cell is exposed to a 6.6 x 1014 Hz light source, it can charge batteries up…
A: This question is based on photo electric effects.
Q: The average intensity of sunlight on Earth’s surface is about 700 W/m2 .(a) Calculate the amount of…
A: Given: Intensity, I =700 W/m2 Area, A = 0.5 m2 time, t = 4 h
Q: Two handheld radio transceivers with dipole antennas are separated by a large fixed distance. If the…
A:
Q: A sun-like star is barely visible to naked-eye observers on earth when it is a distance of 7.0 light…
A:
Q: . Consider a geostationary-orbit satellite at an altitude of 35,784 km above the earth's equa- tor…
A: In this question we have to consider a geostationary-orbit satellite at an altitude of 35,784 km…
Q: If the energy received by 6 m? area in 11 minutes is 4400KJ. Calculate the value of Solar constant ?
A: Given data : Energy = E Time = t Area = A To find :…
Q: A B-emitting radiation source gives 250 units of radiation at a distance of 4.0 m. At what distance…
A: We know thatPower per unit area is called intensity.I=PAArea is given by…
Q: If the energy received by 7 minutes is 4690KJ. 5 m² area in Calculate the value of Solar constant ?
A:
Q: The intensity of sunlight on earth is about 100 mW/cm (that's milli-Watts per cm squared). If you…
A:
Q: What are E0 and B0at a point 2.50 m from a light sourcewhose output is 18 W? Assume the bulb emits…
A: The average intensity of the light source is, Iavg=P4πr2=18 W43.142.50 m2=0.229 W/m2 The maximum…
Q: The average intensity of sunlight on Earth’s surface is about 700 W/m2. (a) Calculate the amount of…
A: Average intensity = 700 W/m2 Area, A = 0.5 m2 time, t = 4 h
Q: The distance between Planet X and a star is 1.8 x 1011 m. At the surface of Planet X, the average…
A:
Q: Using your knowledge of radiation pressure, calculate the force of a laser beam striking a mirror…
A:
Q: What is the frequency of the EM wave emitted most strongly by a glowing element on a stove with…
A: The given data are: T=1550 Kc=3×108 m/s
Q: A 10.0%-efficient array of solar cells collects sunlight with an average intensity of 700W/m2. (a)…
A: Given:Average intensity = 700 W/m2Efficiency =10%Intensity = 700 W/m2 (10%)Power = 100 W
Q: The average intensity of sunlight on Earth’s surface is about 700 W/m2 . (a) Calculate the amount…
A: Intensity, I = 700 W/m2 Area, A = 0.5 m2 time, t = 4 h = 4 x 3600 s
Q: A space probe which is a distance of 2.6×1010 mm from a star measures the total intensity of…
A: Distance=2.6×10^10mm Intensity=5300W/m²
Q: If a radiation source gives 75 units of radiation at a distance of 2.4 m, at what distance does the…
A: The radiation is inversely proportional to the square of the distance.
Q: Assume the mostly infrared radiation from a heat lamp acts like a continuous wave with wavelength…
A: The lamp’s power is, The specific heat is, The increase in the temperature is, The mass of the…
Q: A radiometer has two square vanes (2.0 cm by 2.0 cm), attached to a light horizontal cross arm, and…
A: Given information: Here, I is the light’s intensity.
Q: A state highway patrol car radar unit uses a frequency of8.00 * 109Hz. What frequency difference…
A:
Q: To maximize the radiation pressure on the sails of a spacecraft using solar sailing, should the…
A: The first spacecraft to use solar sailing was launched in 2010 by Japan Aerospace Exploration…
Q: If the energy received by 5 m² area in 430 seconds is 5120KJ. Find the value of Solar constant ?
A: Introduction : In this question we are provided with value of area , time and energy . With these…
Q: The average intensity of the solar radiation that strikes normally on a surface just outside Earth’s…
A: Given, Intensity I = 1.4 kW/m2 = 1400 W/m2 And we know radiation pressure here will be given by: Pr…
Q: The intensity of electromagnetic energy from the Sun reaching the Earth is 1,390 W/m². Earth is…
A: Given information: The Intensity of sunlight received by earth (I1) = 1,390 W/m2 The distance of…
Q: Some of the most powerful lasers in the worldare used in nuclear fusion experiments. The NOVA laser…
A: Given Data: The energy produced by NOVA laser is, E=40.0 kJ The time produced by the laser NOVA is,…
Q: A garage is illuminated by a single incandescent lightbulb dangling from a wire. If the bulb…
A: Given data The power is, P=50.0 W The distance is r = 1.00 m The power consumed is, n=5.00% Step 1…
Q: What is the intensity in W/m2 of a laser beam used to burn away cancerous tissue that puts 374 J…
A: To determine,The intensity(I) in Wm-2 of a laser beam.given,Energy of laser beam(E)=374 Jdiameter…
Q: An intense light source radiates uniformly in all directions. At a distance of 5.0m from source, the…
A:
Q: Which of the following parameters is included in the expression for radiation heat current? * O…
A: Radiation heat current depends on Cross section area , temperature gradient
Q: If the energy received by 3 m2 area in 450 seconds is 4280KJ. Find the value of Solar constant ?
A: Given data : Area = A Time…
Q: (a)The signal retrieved in an optical fiber reduces at its output to one-tenth of its input power.…
A:
Q: The intensity of sunlight hitting the earth is about 1300 W{m2. If sunlight strike a perfect…
A:
Q: The Earth reflects approximately 38.0% of the incidentsunlight from its clouds and surface. (a)…
A: Write the expression for pressure due to the reflected light
Q: If the energy received by 7 m? area in 6 minutes is 4290KJ. Calculate the value of Solar constant ?
A: Energy recieved (E) = 4290 kJ Area (A) = 7 m2Time (t) = 6 minutes
Q: If a (10 mJ) laser pointer creates a spot that is 5 mm in diameter in a 30 second, determine the…
A: The energy of the laser pointer creates E = 10 mJ The diameter of the laser pointer d= 5 mm the…
Q: Queston 5 An example of Electromagnetic wave which is imvisible to human eye is Not yet anpered…
A: (5)Electromagnetic waves are also known as EM waves. Electromagnetic radiations are composed of…
Q: When driving on the upper level of the Bay Bridge, westbound from Oakland to San Francisco, you can…
A: When driving on the upper level of the Bay Bridge, westbound from Oakland to San Francisco, you can…
Q: A photovoltaic array of (solar cells) is 10.0% efficient in gathering solar energy and converting it…
A: Given: Power = 100 W Efficiency e = 10% Intensity = 70 Wm2 Formula used: I=PA here, A is the area. E…
Q: White dwarf stars have been observed with a surface temperature as hot as 200,000°C. What is the…
A: Given data *The surface temperature of the dwarf star is T = 200,000°C = (200000 + 273) K = 200273 K…
Q: At what distance from the Sun is the intensity of sunlight three times the value at the Earth? (The…
A:
Step by step
Solved in 2 steps with 2 images
- you are standing 2.5 m from a 150-W lightbulb. If the pupil of your eye is a circle 5.0 mm diameter, how much energy enters your eye per second? (assume 5.0% of the lightbulb's power is converted to light)In a particular city, electrical energy costs $0.13 per kilowatt-hour. (Round your answers, in dollars, to at least two decimal places.) (a) How much does it cost to operate an old-style incandescent 40.0-W light bulb continuously for 24 hours? $ (b) A modern LED light bulb that emits as much visible light as a 40.0-W incandescent only draws 4.50 W of power. How much does it cost to operate this bulb for 24 hours? $ (c) A particular electric oven requires a potential difference of 220 V and draws 20.0 A of current when operating. How much does it cost to operate the oven for 4.30 hours? $A solar panel measures 80 cm x 50 cm. In direct sunlight, the panel delivers 3.2 A at 15 V. If the intensity of sunlight is 1 000 W/m2, what is the efficiency of the solar panel in converting solar energy into electrical energy?
- What area is needed for a solar collector to absorb 45.0 kW of power from the Sun's radiation if the collector is 75.0% efficient? (At the surface of Earth, sunlight has an average intensity of 1.00 × 10³ W/m².)A farmer wants to install a solar energy system for pumping water through a standalone PV system situated in his farm land. His irrigation time is usually when the zenith angle is at15o. The transmittances of all gases is 71% and the water vapor absorption is 4% and the transmission of aerosol is 92%. a) Compute the power density then find the solar efficiency at that time. b) The farmer power requirement is 3.2 KW. The effective available area for the PV modules is 20 m2. What is minimum level of PV panel efficiency he is supposed to shoot for at the conditions of question a)? c) The proposed Panel has ( Vmax= 36 V and Imax = 5.55 A), while the 3.2 KW water pump DC motor require at least 280 V DC to run, What is your PV system modules configuration for this case ?In a particular town, electrical energy costs $0.12 per kilowatt-hour. (Round your answers, in dollars, to at least two decimal places.) (a) How much does it cost to operate an old-style incandescent 100-W light bulb continuously for 24 hours? $ (b) A modern LED light bulb that emits as much visible light as a 100-W incandescent only draws 16.0 W of power. How much does it cost to operate this bulb for 24 hours? $ (c) A particular electric oven requires a potential difference of 220 V and draws 20.0 A of current when operating. How much does it cost to operate the oven for 4.80 hours? $
- In a particular area of the country, electrical energy costs $0.18 per kilowatt-hour. (Round your answers, in dollars, to at least two decimal places.) (a) How much does it cost to operate an old-style incandescent 60.0-W light bulb continuously for 24 hours? $ (b) A modern LED light bulb that emits as much visible light as a 60.0-W incandescent only draws 8.50 W of power. How much does it cost to operate this bulb for 24 hours? $ (c) A particular electric oven requires a potential difference of 220 V and draws 20.0 A of current when operating. How much does it cost to operate the oven for 3.90 hours? $The 20-W LED bulb can provide the same amount of light output as the 100-W incandescent light bulb. How much percentage you could save for using the LED bulb in place of the incandescent bulb for one year, assuming ₱7.50 per kilowatt-hour is the average energy rate charged by the power company? Assume that the bulb is turned on for 7 hours a day. a.) 20% b.) 80% c.) 150% d.) none of the aboveA 9 W led lightbulb emits the same light as a 60 W standard lightbulb. If a power company charges 10 cents per kW.h, then how much money do you save by using the led lightbulb instead of the standard lightbulb for 30 days?
- If the energy received by 5 m² area in 430 seconds is 5120KJ. Find the value of Solar constant ?An incandescent lightbulb is an inexpensive but highly inefficient device that converts electrical energy into light. It converts about 10 percent of the electrical energy it consumes into light while converting the remaining 90 percent into heat. The glass bulb of the lamp heats up very quickly as a result of absorbing all that heat and dissipating it to the surroundings by convection and radiation. Consider an 8-cm-diameter 60-W lightbulb in a room at 25°C. The emissivity of the glass is 0.9. Assuming that 10 percent of the energy passes through the glass bulb as light with negligible absorption and the rest of the energy is absorbed and dissipated by the bulb itself by natural convection and radiation, determine the equilibrium temperature of the glass bulb. Assume the interior surfaces of the room to be at room temperature.Suppose a battery operates a 2.25 W electric clock for 19.5 months. 1. What is the available energy content, in joules, of the battery? 2. How many years can a battery that supplies 7.75 × 104 J run a pocket calculator that consumes energy at the rate of 1.05 × 10-3 W?