Monday

January 26, 2015

January 26, 2015

Posted by **Blessig iliya** on Wednesday, October 12, 2011 at 4:05pm.

- physics -
**Henry**, Thursday, October 13, 2011 at 9:01pmFb = mg = 100kg * 9.8N/kg = 980N. = Force of the boxes.

Po = Fb*d / t = 980 * 20 / 20 = 980W. =

Power output.

Eff. = (Po / Pi)* 100%,

Eff. = (980 / 1200) * 100% = 81.67%.

**Answer this Question**

**Related Questions**

math - there are 30 boxes to be moved out of a house bob can carry 3 boxes at a ...

physics - Ten boxes, each 16.0 cm high and weighing 250 N, initially are all ...

math - Find the total weight of the boxes of pecans in a shipment of 3 lb boxes ...

Math - The Pack-U-Up Moving Company uses several different size boxes,but the ...

math 6 grade - The Pack-U-Up Moving Company uses several different size boxes,...

Physics - 7. A stock person at the local grocery store has the job of 1) picking...

Math (for Damon) - Nathan and Steven stacked boxes on a shelf. Nathan lifted 13 ...

Mathematics - Nathan and Steven stacked boxes on a shelf. Nathan lifted 13 boxes...

math - Nathan and Steven stacked boxes on a shelf. Nathan lifted 13 boxes and ...

physics - 1.when a person diet's is their goal to lose weight?explain. 2.a man ...