i need a solar panel (or panels together) that’s no bigger than 16" by 10". the panel(s) need to produce a combined total of at least 7 volts and roughly 50 amps (50000 MA) and higher preferably 8 volts 70 amps. i need the panel(s) to be under 0 if possible. now with the wind generator i need something small like salt shaker size or smaller than i can rig to a fan or something

Home has old electric baseboard heat and uses window units for AC. It is a 1985 build cape cod with 1.5 stories. Needs new heating and cooling system. No access to natural gas. Curious as to what it will cost me and recommendations for who to contract the job to. Thanks!

To make the world a better place, what kind of energy would u use to do what ??? example, solar, geothermal, wind etc lets hear some ideas and your reasons!

1. Two pinions of a gear system driven by the same worm will rotate
A. in the same direction as the worm.
B. at right angles to each other.
C. at a higher speed than the worm.
D. in opposite directions.

2. If the driven shaft and the drive are at the same angle but turn in opposite directions, the gearing system is called a
A. worm drive.
B. chain drive.
C. gear and pinion drive.
D. belt drive.

3. When a resistor and capacitor are placed in series, the circuit which results forms a(n)
A. RC time constant.
B. filter.
C. transistor supply.
D. IC regulator.

4. Reciprocating motion in an appliance is obtained from a rotating motor shaft with the aid of
A. a worm and a gear.
B. two gears and a pinion.
C. a counterweight on the gear.
D. an eccentric stud on the gear.

5. Why does an electric knife have a nylon gear and a steel worm?
A. To make the worm last longer
B. To eliminate lubrication of the worm
C. To reduce the load on the worm
D. To make the worm easier to replace

6. Which one of the following lubricants is recommended for use in gearboxes?
A. Light oil
B. Motor oil
C. Cream grease
D. Automobile grease

7. The line cord of a vacuum cleaner must be of the
A. jacketed type.
B. grounded type.
C. cotton-covered type.
D. zip type.

8. What type of speed control system uses a wire-wound potentiometer?
A. SCR
B. TRIAC
C. Free-running oscillator
D. Rheostat

9. If the motor in a geared appliance has a rated speed of 3600 rpm and a gear ratio of 6 to 1, the driven gear will turn at a speed of
A. 600 rpm.
B. 1800 rpm.
C. 3600 rpm.
D. 21,600 rpm.

10. What is the major disadvantage of a free-running oscillator used to trigger an SCR or TRIAC?
A. Limited high-speed operation
B. Limited low-speed operation
C. Excessive motor noise
D. Early motor failure

11. Modern full bag indicators use what type of sensing component?
A. A spring-loaded piston
B. A spring-loaded vane
C. A compression switch
D. A pressure differential switch

12. What is the typical breakover voltage for a DIAC used in an electronic control circuit in which 120 VAC is used with a power output semiconductor device?
A. 6
B. 12
C. 32
D. 70

13. A wet-carpet cleaner that carries its own water supply has water pressure created by a
A. manual valve.
B. solenoid valve.
C. motor-driven pump.
D. faucet mixing valve.

14. What type of device may be used to prevent a food processor’s motor from being damaged by excessive current?
A. A potential relay
B. A current relay
C. A centrifugal governor
D. A DIAC

15. Dull blades of an electric knife should be sharpened with
A. an oilstone.
B. a flat file.
C. a bench grinder.
D. a pattern file.

16. What component of a wet/dry vacuum cleaner is not present in a typical canister-style residential cleaner?
A. A high-speed universal motor
B. A single-pole, single-throw ON/OFF switch
C. A blower port for exhaust air
D. A float switch

17. Vacuum strength is rated in terms of
A. rheostat capacity.
B. cm or in. of water lift.
C. horsepower.
D. torque.

18. The purpose of a capacitor unit in a vacuum cleaner is to
A. suppress radio-frequency interference.
B. increase the motor starting torque.
C. reduce the voltage applied to the rectifier.
D. eliminate brush arcing.

19. In what order does the air flow in a canister vacuum cleaner pass through the following components?
A. Motor, filter, fan, and bag
B. Filter, motor, bag and fan
C. Bag, filter, fan, and motor
D. Bag, motor, fan, and filter

20. A vacuum cleaner can operate at two different speeds because it uses two
A. armatures.
B. starting switches.
C. fan blades.
D. field-coil lengths.

21. What is the name of the SCR or TRIAC triggering system that triggers the output device at the same point on each AC cycle?
A. Phase-regulated switching
B. Locked-pulse switching
C. Zero-crossing switching
D. Full-cycle switching

22. Which one of the following statements is TRUE concerning an upright vacuum cleaner?
A. An upright cleaner uses a two-stage filter to prevent motor dirt buildup
B. Upright cleaners are only available in single-speed models
C. Many upright cleaners use a top-fill dust and dirt collection system
D. Upright cleaners use a gear-drive agitator system

23. What would be the most likely cause of an agitator belt showing excessive wear on one side of the belt?
A. Bent drive shaft
B. Dragging agitator bar
C. Improper belt tracking
D. Broken ribs in belt

24. What is the most probable cause of weak suction in a vacuum cleaner if the hose, the bag, and the filter are NOT clogged?
A. Unbalanced fan blades
B. Worn brushes and bearings
C. A shorted armature
D. Leaking gaskets and fittings

25. Why is mechanical feedback of motor speed needed in some large food processors?
A. To prevent motor runaway to an unsafe speed
B. To reduce the overall cost of the appliance
C. To prevent motor stalling in high-torque situations
D. For exact low speed operation without clogging

I have a 06 charger rt, and i’m waiting for my diablosport to come it. The diablo is set up for a 180 degree thermostat, the stock thermostat on my car is 203. What serttings should i set the fans at on the diablo unit i get the 180 thermostat? Also does it make a big difference using the 180tsat with the diablo considering i can change the fans settings on the diablo?

how is wind power produced and how does it work and generate electricity

I’m making homemade chicken alfredo for dinner and I asked my husband to pick up some green beans and he brought home canned, what can I add to make them better

I did all 50 questions and i need help with these thank u.

8.
In a random sample of 250 customers at a fast food restaurant, 84 customers ordered a salad. If the restaurant typically has 1,000 customers in a day, how many customers will probably order a salad? (2 points)
• 386 customers
• 436 customers
• 336 customers
• 261 customers
9.
A survey showed that 56% of car owners prefer four-doors cars, 31% prefer two-door cars, and 13% have no preference. You ask 550 people. How many do you think will prefer four-door cars? (2 points)
• 358 people
• 208 people
• 308 people
• 373 people
10.
Gina has made 40% of her goal kicks in soccer. How could you simulate her next 14 goal kicks? (2 points)
• Flip 1 coin.
• Spin a spinner with 10 equal sections having 4 sections shaded.
• Flip 2 coins.
• Roll a number cube with 9 sides.

12.
A yogurt shop offers 6 different flavors of frozen yogurt and 9 different toppings. How many choices are possible for a single serving of frozen yogurt with one topping? (2 points)
• 54 choices
• 52 choices
• 15 choices
• 57 choices
13.
Jamestown Builders has a development of new homes. There are 5 different floor plans, 11 exterior colors, and an option of either a one-car or a two-car garage. How many choices are there for one home? (2 points)
• 18 choices
• 165 choices
• 110 choices
• 55 choices
14.
If no digit appears more than once, how many 5-digit numbers can be formed from the digits 2, 3, 4, 6, and 7? (2 points)
• 120 numbers
• 24 numbers
• 126 numbers
• 115 numbers
15.
Which events are independent? (2 points)
• You draw 2 colored cards at the same time and get one red and one green.
• You study English 20 minutes nightly, and then you get an A on the next test.
• You toss two coins and get one head, one tail.
• You choose two ice cream flavors.
Short Answer

22.
The owners of an amusement park have hired you to find out if visitors will return to their park. You find that 45,000 people visit the park during a given week. When you ask 1,000 people at random whether or not they will return, 750 say yes, 150 say no, and 100 say they are unsure.

a. Organize the results of your survey into a chart. Note: create a chart on a separate piece of paper.
b. Summarize your findings and explain to the owners how you are able to predict the total number of visitors that plan to return to the park.

ok…

it needs some experimentations, however it seems to work very well…
This NaCl peculiarity comes from its high value of the heat of fusion(about 300 kwh/m3 – in addition a little salt mine can easily contain 100 millions m3 of salt…) .
It means that solar energy can be used to melt the salt, then it can release heat constantly…

Do you agree?………..

Allright guys im 15 and im starting to save up for my first car. I know that once I get my permit at 16 Im gonna use my dads old accord to practice till I get my liscense. Now I dont mean to sound spoiled(bleieve me i think im far from it) but once I get my liscense I want to buy a car with some more muscle in it. Ill be using my own money so it cant be to expensive of a buy (like the dodge viper. From what Ive seen they cost a lot.) As long as the car gets decent gas miliage its ok, im not one of those I need 40mpg people. My one peeve is repairs I hate the idea of buying a lemon. So I guess Im kinda weird in that Im one of the few kids who would rather take power over wind up goood gas mileage, but ur only a teen once, u no? So any way good first muscle cars that wont totally bust my wallet?

when you’re at home?

Also, is it OK to leave fans and AC off during summer time when you’re not at home even during temperatures greater than 80F? If not, what is the best thermostat setting when I’m away from home?

1. what are the other energy sources names?

Some of the ridges in the forest have potential for generating wind electricity. This could benefit the economic and environmental sustainability of Clay county as the majority of the people work outside the county, and most goods and services also must be brought from the outside. However, one challenge to both wind power and a more locally based economy is that the majority of the land in the county is owned by the federal government.
Even though putting windmills in a national forest is far from ideal, a few acres for a windmill is better than getting your energy from Mountain Top Removal mining.

Currently, solar cells are about 30% efficient. How can nanotechnology may change this in the future? What do they expect solar cell efficiency to increase to and what impact would this have on the use of solar cells?