A train travels 53 kilometers in 4 hours, and then 90 kilometers in 3 hours. What is the average speed

The 400 kg mine car is hoisted up the incline using the cable and motor M. For a short time, the force in the cable is F = (3200) N, where t is in seconds.

Which is required for convection to occur? A. a solid substance B. a heat source C. boiling water D. air molecules

Choose the word from the drop-down menu that completes each sentence. A/An__star system is made of two stars. A/An__star system is made of no more than a few thousand stars. A/An__star system is made of more than a million stars.

An atmospheric discharge of static electricity is called

True or false velocity is the slope of the acceleration versus time graph

Which of the following are the top two job expectations of people who career plan? Select all that apply. A. Hours B. benefits C. type of work D. coworkers E. security

Define the term volt.

A baseball player was hit by a baseball in the left eye and complains of double vision. What should you do? A. Restrict spinal movement B. Assess pupillary response C. Perform a detailed exam D. Apply ice to orbit

An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?