What is the potential energy of a 2kg hammer which is 0.4 meter up

How many neutrons does element x have if it's atomic number is 31 and it's mass number is 88?

The worldwide leading source of electrical power is:

What protect and support the cell in a animal cell

Which species below is an ionic compound? A) NaF B) CO2 C) AlAs D) OF2

A person walks 12 meters to the west and then 16 meters back to the east. what is the distance covered and the direction of displacement

A 15.0 m long plane is inclined at 30.0 degrees. If the coefficient of friction is 0.426, what force is required to move a 40.0 kg mass from rest at the bottom on the plane to the top of the plane with a final velocity of 8.00 m/s?

In a pig-calling contest, a caller produces a sound with an intensity level of 60 db. how many such callers would be required to reach the pain level of 120 db? 2 incorrect: your answer is incorrect.

Why is the use of scientific names important in biology?

1) what is a calorie?

January 1st 37°F January 7th 48°F January 14th 52°F January 18th 51°F January 21st 45°F January 25th 41°F January 31st 55°F When looking at a data set of numbers, the mean is the average. Look at the table above.