What causes water to become denser when it is carried to the poles by surface currents

Simpson makes one 144 Km trip in his car with an average velocity of 48.0 Km/h to the east, how much time in hours would he save if he were to increase his velocity to 56.0 Km/hr?

How did the sun moon and the earth make seasons?

A superball of mass m is dropped vertically from a height, h. if the impact time with the floor is t, what is the average force on the ball

Describe how substance move from one state to another

A platinum sphere with radius 0.0199 m is totally immersed in mercury. Find the weight of the sphere, the buoyant force acting on the sphere, and the sphere's apparent weight. The densities of platinum and mercury are 2.14*104 kg/m3 and 1.

Why should scientists write reports and give oral presentations of the steps and results of their in investigations?

Which of these rocks are formed by volcanic activity? select the two correct answers. a. marble b. basalt c. limestone d. granite e. sandstone

Which source is most likely an authority on the subject? Dr. Vale, a pediatrician, discusses electrical circuitry on her home-improvement website. Jonah, an amateur cook, teaches his son how to make the best grilled cheese sandwiches.

What methods can be used to break down substances into elements

8. A gas is contained in a horizontal piston-cylinder apparatus at a pressure of 350 kPa and a volume of 0.02 m3. Determine the work done by the piston on the gas if the cylinder volume is increased to 0.15 m3 through heating.