HELP ILL MARK BRAINLIEST!! Match these items words on the left with the statement that best describes it.
force
1. force used to generate electricity
muscular
2. the force that attracts any object to another
3. a push or a pull action
water
4. a property of all matter at work
gravity
5. force used to walk up the steps
newton-meter
6. English measurement of work
foot-pound
7. the metric measurement of work
motion

What is the answer to these problems 30 pt

How much hereditary information is contain in a human sex cell

Athin electrical heater is inserted between a long circular rod and a concentric tube with inner and outer radii of 20 and 40 mm. the rod (a) has a thermal conductivity of ka = 0.15 w/(m*k), while the tube (b) has a thermal conductivity of kb = 0.8 w/(m*k) and its outer surface is subjected to convection with a fluid of temperature t= -15°c and heat transfer coefficient 60 w/(m2 *k). the thermal contact resistance between the cylinder surfaces and the heater is negligible. (a) determine the electrical power per unit length of the cylinders (w/m) that is required to maintain the outer surface of cylinder b at 15°c. (b) what is the temperature at the center of cylinder a?