An object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done? A. 47.75 J B. 4,586.4 J C. 468 J D. 764.4 J

How much physical activity do children and trens need? A. 50 minutes at least twice a week B. 50 minutes at least five days a week C. 150 minutes a week D 150 minutes at least five days a week

On a day that the temperature is 21.0°C, a concrete walk is poured in such a way that the ends of the walk are unable to move. Take Young's modulus for concrete to be 7.00 109 N/m2 and the compressive strength to be 2.00 109 N/m2.

A surface receiving sound is moving from its original position to a position three times farther away from the source of the sound. the intensity of the received sound thus becomesA. three times as high. b. nine times as high. c. nine times as low.

A temperature of 50.0 degrees Celsius is the same as a Kelvin temperature of approximately -223 K 223 K 273 K 323 K

How long will a 8 kwh run a 300w speaker?

How do i do this? Draw a Punnett square in your assignment worksheet that shows the results of a cross between a homozygous red bull (RR) and a heterozygous red cow (Rr). Be certain to title your Punnett square and indicate each parent.

An object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done? A. 47.75 J B. 4,586.4 J C. 468 J D. 764.4 J

If an upstairs room is warmer than downstairs, is that a example of convection, conduction, or radiation?

Explain how the metric system is based on a system of tens

What gives the flow of time