2. The nucleus holds two particles:

a. proton and electron

b. proton and neutron

c. neutron and electron

How can you make spherometer more sensitive

Paleobotany is the study of fossil insects. True False

What type of reaction occurs in the cores of stars to create their tremendous amounts of energy? a. fusion b. fission c. physical d. chemical

if two objects are moved closer together so that the distance between them is one-third the original distance what is the gravitational force after the object is moved

When a potential difference of 20 V is applied to a given wire, it conducts 0.25 A of current.?

If a reaction has a rate constant of 3.7 x 10-3 s-1 at 25oC, and an activation energy of 43.6 kJ/mol, what will be the rate constant for this reaction at 75oC?

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