A train travels 67 kilometers in 1 hours, and then 81 kilometers in 5 hours. What is its average speed?

If I accidentally touch a stove and burn myself, which type of heat transfer is occurring? radiation conduction convection thermal

A race car starts from rest on a circular track. The car increases its speed at a constant rate at as it goes 4.25 times around the track.

The majority of geologists believe that the sedimentary rock require 25,000 years to accumulate. true or false

A light-year is: a. the distance light travels in one year b. about 19 trillion miles c. based on the distance from the earth to the sun d. all of the above

Oil can be used to reduce friction. true or fales take 100 mark for solving gg

Which of the following statements does not describe the structure of an atom? a. An atom has a small, dense center called the nucleus. b. Inside the nucleus of an atom are protons and electrons. c. Protons are positively charged sub-atomic particles.

A. Which skill related fitness component is your strongest and weakest?

A 100 N box is placed on an inclined plane that makes a 30° angle with the horizontal. Calculate the component of gravitational force that acts down the inclined plane. A. 25 N B. 50 N C. 87 N D. 100 N

Approximately how many kelvins are equal to 60 c? a. 289k b. 323k c. 333k d. 413k

What are two ways to change velocity?