Which element, represented by x, reacts with fluorine to produce the compound xf2? (1) aluminum (3) calcium (2) argon (4) sodium

What two variables are multiplied together to calculate mass?

What is the best way to define work? a. applying force for a period of time. b. moving a certain distamce c. appying a force over a distance d. appying force at a given speed?

How Much Potential Energy Does A 50kg block of Ice a Height of 4m Have?

An infinite line of charge with linear density λ1 = - 6.6μC/m is positioned along the axis of a thick conducting shell of inner radius a = 2.7 cm and outer radius b = 4.5 cm and infinite length.

You throw a baseball horizontally, and Jill catches it. Neglect air resistance. The energy transformation that occurs during the catch is A) kinetic E ⇒ chemical E. B) kinetic E ⇒ thermal E. C) chemical E ⇒ kinetic E. D) thermal E ⇒ kinetic E.

Two sounds are played for you. The first has a frequency of 196 Hz. The second has a frequency of 392 Hz. Which sound will be "higher" to your ear? A) The First B) The Second C) They will sound the same

When is an object that has been dropped from a great height through the air closest to vein in a free fall? At it's terminal velocity < - - this one?

A 0.300-kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.200-kg puck moving initially along the x axis with a speed of 2.00 m/s. After the collision, the 0.200-kg puck has a speed of 1.00 m/s at an angle of? = 52.0

Ariella drove 40 miles to see her cousin. The trip took Ariella 2 hours. Then drove from her cousins house to a store for 30 miles. It took Ariella to hours to Ariella to arrive at the store. What was the average speed of the trip

A meandering river is flowing in a broad, alluvial valley and the river is silt-laden but also moves sand and a small amount of gravel. The government decides to build a dam across the valley for power and flood control.