How long ago did homo sapiens first appeared in the fossil record? Identify the era in which this occurred.

Why is energy required to compress a spring? A) the spring has chemical bonds B) the spring is at room temperature C) thé position of the spring is being changed D) the spring is metal

What is the nature of the distance time graph for motion of an object.

What happens to energy when the mass of an object increases due to potential energy

if the air is only holding one-third as much moisture as it can possibly hold, what is the relative humidity?

Circuit that has only one path for the current to follow

What investigations provide large amounts of information about a wide range of variables.

Why would Sodium (Na) and Chlorine (CI) want to form a lonic Bond? -to achieve a full inner valence shell -to achieve a equal amount of protons & electrons in their nucleus -to achieve an stable amount of protons & neutrons in their nucleus -to

A digital thermometer reads 15 degrees Celsius, what is the uncertainty?

Determine the magnitude of the effective value of g⃗ at a latitude of 60 ∘ on the earth. assume the earth is a rotating sphere.

What characteristic of a planet determines the acceleration due to gravity on it?