A medium-sized air conditioning unit is rated at 900 W. How much energy will the AC unit require in order to operate for 2.0 hours?
1800 J | |
450 J | |
1.08x105 J | |
6.48x106 J |
A medium-sized air conditioning unit is rated at 900 W. How much energy will the AC...
10 of 20 Student A lifts a box of mass m to a height of h. Student B lifts a box of mass 2 m to a height of h/2. Which student exerted the greatest power? Student A Student B Neither student A nor student B (The students exerted the same power.) Not enough information 12 of 20 How much energy is stored in spring that has been compressed 0.20 m if the spring constant is 300 N/m? 9000 J...
A 1500-kg air conditioning unit is being lifted by a crane onto the roof of a building. The unit starts on the ground and is raised straight up to a height of 12.0 m by a cable attached to the crane. The tension in the cable during the lift is 1.54 × 104 N. (Reminders: a free body diagram will probably be helpful, and work can be positive or negative.) (a) How much work is done on the air conditioning...
A 180 W street lamp is operated for 13 hours a day. How much energy does it take to operate the lamp for 70 days? Express your answer in kW*h Express your answer in joules.
If a 500 W engine operates for 5 seconds, how much energy will it produce? A. 250 J B. 25,000 J C. 2500 J D. 500 J ________________________________________________________ What distance do I cover if I travel 10 m E, then 6 m W, then 12 m E? A. 16 m B. 28 m E C. 28 m D. 16 m E ________________________________________________________________________
Problem 3-12 (Algorithmic) Quality Air Conditioning manufactures three home air conditioners: an economy model, a standard model, and a deluxe model. The profits per unit are $67, $93, and $129, respectively. The production requirements per unit are as follows: Number of Manufacturing Number of Cooling Coils Time (hours) Fans Economy Standard 12 Deluxe 14 For the coming production period, the company has 250 fan motors, 360 cooling coils, and 1800 hours of manufacturing time available. How many economy models (E),...
Your roommate leaves a 120 W fan running in your apartment. Over the course of an hour, how much thermal energy does the fan add to the air?
11. How much energy does a 100-W light bulb use in 8.0 hours? (Note: 1kWh = 3.6x106 Jor 1kWx 1hour) O 800 kWh O 13 kWh O 0.008 kWh O 0.8 kWh
Expand Your Critical Thinking 24-02 a-d Ana Carillo and Associates is a medium-sized company located near a large metropolitan area in the Midwest. The company manufactures cabinets of mahogany, oak, and other fine woods for use in expensive homes, restaurants, and hotels. Although some of the work is custom, many of the cabinets are standard size. One such non-custom model is called Luxury Base Frame. Normal production is 1,000 units. Each unit has a direct labor hour standard of 5...
An Air Conditioning manufactures three varieties of home air conditioners: an economy model, a standard model, and a deluxe model. The profit per unit is SAR 63, 95, and 135, respectively. The production requirements per unit are as follows: Number of Fans Number of Cooling Coils manufacturing Time (hours) Economy 1 1 8 Standard 1 2 12 Deluxe 1 4 14 For the coming production period, the company has 200 fan motors, 320 cooling coils, and 2400 hours of manufacturing...
This is a fermi problem that we are suppose to learn how to do estimation with, I am stuck on this one question though. der of this kW 1000 W 11/kWhr. The Here are sone r i are tome relations and numbers that will help you with the rem One watt (W) is In the U.S., the number of kilowatts you consume in utility companies charge consumers at a rate of about 11 is read "kilowatt-hour and it is a...