Answer:
Refraction
Explanation:
Refraction is the change in direction of waves that occurs when waves travel from one medium to another. Refraction is always accompanied by a wavelength and speed change. Diffraction is the bending of waves around obstacles and openings.
C. Forces act in pairs, so when the red ball pushes the blue ball forward, the the blue ball exerts an equal and opposite force on the red ball.
The density of seawater plays a vital role in causing ocean currents and circulating heat because of the fact that dense water sinks below less dense. long story short, seawater is the problem because its denser than pure water.
Answer:
3.9 m
Explanation:
Assuming no energy losses then all kinetic energy is converted to potential energy
and making h the subject of the formula
where m is the mass of bike rider and bike, v is the velocity, and g is acceleration due to gravity. Taking g as 9.81 m/s2, v as 8.5 m/s then