百度试题 结果1 题目A computer uses 150 watts of power per hour. How many watts does it use in 4 hours? A. 500 B. 550 C. 600 D. 650 相关知识点: 试题来源: 解析 C。每小时 150 瓦,4 小时用电 150×4 = 600 瓦。反馈 收藏 ...
C How much heat can dancers produce? Can the heat energy be stored or used? The SWG3 Arts Centre in Glasgow. Scotland uses a system called Bodyheat, which can use body heat of the dancers as a source of energy.In the arts centre, there are some air collectors taking in the heat pro...
What is the difference between power kW and energy kWh? A KiloWatt, or kW, is the power used by an appliance or produced by the solar kit. 1kW is one kilowatt or one thousand watts. Most homes can accept from 24,000 watts to 48,000 watts of power from the utility at any moment. ...
If you’re wondering, “How many watts does a TV use per hour?”, most modern TVs use between50 to 200 watts on average. Of course, this can vary based on the type, screen size, and settings of your TV, but this is a good baseline for most LED and LCD models. Plasma and larger...
Of that energy, approximately 5 percent is vampire power [source: University of California, Berkeley]. To put that in perspective, that's between 200 and 400 terawatt hours -- roughly as much electricity as the entire country of Italy consumes in a year [source: Smyth]. All this energy ...
How much power in watts...A 116-lb student races up stairs with a vertical height of 5.7 m in 5.5 s to get to a class on the second floor. How much power in watts does the student expend in doing work against gravity?___ WFollow...
It is how many watts of power a 1kg battery can produce. Energy storage systems and transducers such as electric motors have both a gravimetric and volumetric power density. The gravimetric power density of a given device is defined as the ratio of its power output to its weight. This is ...
A solar panel's output rating, or wattage, is the best indicator of its power production. The amount of electricity your solar panels produce directly impacts your long-term savings—f it doesn't cover your electric bill, it will take much longer to break even on your solar investment......
You may know how much you’re spending – but are you aware of how much energy you’re consuming daily or monthly? Or the average electrical energy consumption of a typical household in the U.S.? Do you know how many watts it takes to power a house? Or how many kWh does a house ...
If you were pushing on something with a force of 1 N, and it moved at a speed of 1 m/s, your power output would be 1 watt. An interesting way to figure out how much power you can output is to see how quickly you can run up a flight of stairs. Measure the height of a set ...