A 4-kg cat is resting on a bookshelf that is 2 m high. What is the cats gravitational potential energy relative to the floor if the acceleration due to gravity is 9.8m/s^2?

a. 6 J

b. 8 J

c. 20 J

d. 78 J

What warning signs and alerts should we be aware of for tornadoes?

The way in which a piece of writing moves to create suspense, excitement or other emotions is called A. chronology. B. pacing. C. flashback. D. foreshadowing.

Magnesium (+2) chloride (-1) is an ionic compound. Which is the chemical formula for magnesium chloride? A. Mg2Cl B. (MgCl) 2 C. MgCl2 D. Mg2Cl

What are some examples of convection in our daily lives

A box of books has lessequalmore inertia than a box of cotton balls.

Estimate how long it would take one person to mow a football field using an ordinary home lawn mower. suppose that the mower moves with a 1-km/h speed, has a 0.5-m width, and a field is 360 ft long and 160 ft wide. 1 m = 3.281 ft.

Badri makes the table below to review the factors that affect the electric force between objects. Which change will correct the error in Badri's table?

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet

A weather balloon is inflated to a volume of 2.2 x 10^3 L with 374 g of helium. What is the density of helium in grams per liter?

What is the result of a mutation during replication A: the strands are different B: the strands are identical c: the strands are broken D: the strands are continuous