If the weight of an object of mass "m" is "mg," then the weight of an object of mass "2m" is

A. mg/2

B. mg

C. 2mg

D. 4mg

A child is sliding down the slide at the playground is the mechanical energy conserved why or why not

Use the data provided to calculate the amount of heat generated for each cylinder height.

Whick of the following is an advantage for a single celled organism (A it can become very large) (B it can reproduce quickly) (C it does not have to maintain its structure) (D it can tolerate all the environmental conditions)

Two planets p1 and p2 orbit around a star s in circular orbits with speeds v1 = 44.0 km/s, and v2 = 56.2 km/s respectively. (a) if the period of the first planet p1 is 700 years what is the mass, in kg, of the star it orbits around? kg

What is occurring with light waves to allow you to observe the color of your friends shirt

gaseous h2 and br2 are added to an evacuated 1.15L container kept at 298K. The intial partial pressurre of H2 (g) is 0.782 atm and that of Br2 (g) is 0.493 atm. Find the partial pressures of HBr when the system reaches equilibrium

Why do people use Earth's motions to determine units of time?

Both matter and energy can eneter and exit which of the following systems? A. open only B. both open and closed C. isolated only D. both closed and isolated

As you travel from a spreading center towards a coastline what happens to the age of the rocks of the sea floor

To prevent accidental electric shock, most electrical equipment is A. painted. B. isolated. C. coated. D. grounded.