What is the name of alfred wegener's hypothesis about moving land masses?

The distance between the earth and the sun is about 2.5x10¹¹m. Express SI prefix in kilometers

In which one of the following locations can a person hear the echo of a sound? *A. * Less than 16.6 meters in front of the reflecting surface *B. * At least 33.2 meters behind the reflecting surface *C. * Less than 33.

Which of these is an example of acceleration? a bicyclist turning around a corner a car traveling south with its cruise control set a bus traveling north at 25m/s a helicopter waiting to take off

A 20N stone rests on a table. What is the force the table exerts on the stone? In what direction?

5) A person walking Oil Vertical when the rain is falling vertically downward why? =) A thorium nucleus is exploded into radium and an alfa particle. After pynlosinn they move in opposite direction. Why?

T=2π√ (l/g) is dimensionally correct

A penny falls from a windowsill which is 25.0 m above the sidewalk. How much time does a passerby on the sidewalk below have to move out of the way before the penny hits the ground?

Show that the Newton has the units of mass times acceleration.

Light travels at 150000000km from the sun to earth in 8 minutes. What speed is this in Km/s

Electricity problem (coulomb's law)