What is the pH of neutral substance?

Which of the following correctly describes a longitudinal wave?

O horizon is also known as

A roller coaster is at the top of a hill and rolls to the top of a lower hill. if mechanical energy is conserved on the top of which hill in the kinetic energy of the roller coaster large

A 55.0-g aluminum block initially at 27.5 degree C absorbs 725 J of heat. What is the final temperature of the aluminum? Express your answer in degrees Celsius to one decimal place.

If the magnetic field strength in the spectrometer is increased, will the spacing between where the 235u and 238u ions strike increase, decrease, or stay the same?

A 200-kg boulder is 1000-m above the ground. what is its potential energy?

The law of reflection states that if the angle of incidence is 81 degrees, the angle of reflection is ___ degrees.

Do you mind if I use this example for my assignment?

A squirrel runs along an overhead telephone wire that stretches from the top of one pole to the next. It is initially at position xi=3.37 mxi=3.37 m, as measured from the center of the wire segment. It then undergoes a displacement of Δx=-6.

Imagine a 10 kg block moving with a velocity of 20 m/s to the left. calculate the kinetic energy of this block