Which of the following is the basis for arranging the elements in the modern periodic table?

A) alphabetical order

B) masses of atoms

C) number of protons

D) date of discovery

A rollercoster car and passengers of total mass 1800kg starts from rest at 80m above the ground. Ignoring air resistance and friction what will the speed be: At ground level At top of the next peak which has height of 30m Take gravity 10N/kg i

Wind resistance is jointly proportional to velocity and surface area of the object. If an object is traveling 45 mph and has a surface area of 49 square feet it will experience a wind resistance of 496.125 Newtons.

If gravity is always pushing down on you, what prevents you from sinking down into the ground? A. The ground is pushing you but with a greater force. B. The ground is pushing you up with a lesser force. C.

What name is given to the wall of water that makes landfall just ahead of a hurricane? a. storm surge b. tsunami c. cyclone wave d. hurricane flood?

According to the Big Bang theory, after the "Bang", the universe remained dark until about ___ later, when neutral atoms began form. *three minutes *one billion years *300,000 years *three billion years

The contamination that results from the spread of bacteria from meat to vegetables is called

A rock has a mass of 5 kg on the moon. What is the mass of the rock on the earth

A battery applies 45 volts to a circuit, while an ammeter reads 10 ma. later, the ammeter reading drops to 7 ma. assuming the resistance has not changed, the voltage must have

A 150-kg object takes 1.5 minutes to travel a 2,500 - meter straight path. It begins the trip traveling 120 m/s and decelerates to a velocity of 20 m/s. What is the acceleration?

Lava is rock that has undergone a physical change and has liquefied. What is known about this change?