Light waves from the sun can travel through outer space and reach the earth. This suggests that light is a (n)

A) mechanical wave.

B) compression wave

C) Longitudinal wave

D) electromagnetic wave

What do geographers explore

A car Rounds a curve while maintaining a constant speed. Is there a net force on the car as it rounds the curve? A: it depends on the sharpness of the curve and speed of the car. B: no - it's speed is constant C: yes

Which gland in the endorcine system involved in dwarfism

Science can answer questions about what is good or evil. True False

Two boys searching for buried treasure are standing underneath the same tree. One boy walks 18 m east and then 18 m north. The other boy walks 16 m west and then 11 m north. Find the scalar product of their net displacements from the tree.

Why is it important to develop alternative energy sources

Which of the following subatomic particles does not have a charge? A.) electron B.) proton C.) neutron D.) positron

How do we use light in space?

What units are used for gravitational potential energy? Write the name, not the symbol.

A 7.5 kg block is placed on a table. If it's bottom surface area is 0.6m2, how much pressure does the block exert on the tabletop? A. 376.5 Pa B. 73.5 Pa C. 226.5 Pa D. 122.5 Pa