A van increased in speed from 20 km/h to 30 km/h in 5s. Calculate the acceleration

An artillery shell is fired at an angle of 56.1 degrees above the horizontal ground with an initial speed of 1660 m/s. The acceleration of gravity is 9.8 m/s^2. Find its horizontal range, neglecting air resistance. Answer in units of km.

Magnetic levitation has been used to innovate which aspect of life? Give examples

How are aquatic ecosystems classified?

If the line spectrum of lithium has a red line at 670.8 nm. How much energy does a a photon with this wavelength have?

In space, astronauts use an electrical medium to talk to each other ... Why?

What is the value of g in m/s^2, rounded to one decimal place

There is a naturally occurring electric field near the surface of the Earth whose magnitude is 80√pi V/m. How much energy is stored per cubic meter in this field?

During the Pleistocene, a land bridge connected Alaska and Asia. What could have caused this bridge to from? the ending of an ice age the beginning of an ice age the erosion of the Alaskan coastline the erosion of the Asian coastline

A rock is shot vertically upward from the edge of the top of a tall building. The rock reaches its maximum height above the top of the building 1.60 s after being shot.

Which of the following effects does low nitrogen availability most likely have on the carbon cycle? a. more carbon dioxide is taken up by plants b. carbon dioxide is trapped in the soil around plants c.