Which is an example of projectile motion?

a person throwing a rock

a child swinging on a swing set

an athlete running on a track

a teacher picking up a pencil

The figure shows two vectors, u and v. Which law of vector addition should be used to find the resultant of these two vectors? A) Triangle law of vector addition, expressed symbolically as w u +v.

The large, flat piece of wood within a piano serves the same purpose as (a) a bamboo reed (b) a set of wooden drum sticks (c) a guitar pick (d) the hollow box within a violin

Which allows the ear to detect sound? A. electromagnetic waves B. electrical impulses from the ossicles C. auditory nerve impulses to the pinna D. vibrations i think its D but im not sure if it is.

If a student is walking against the wind, would the student be traveling faster or slower than a person walking with the wind and why?

About how many days are in an Earth year? And how many hours in an Earth day?

Which best descibes ionic compound formulas

Explain fully, in your own words, why the temperature during PCR goes through cycles of 94C, 50C, 72C.

4. What is a compound? Name an example.

What is one important role that ocean waters have in heating Earth? absorb and transport solar energy transport nutrients and waste create and emit solar energy wear away rock and soil

Shelly was surprised to learn the dwarf planet Pluto used to be considered a planet. What would have had to be true for Pluto to remain categorized as a planet? Pluto would need to have an atmosphere.