How might the human heart benefit birds?

Which explanation best describes a wave?

An electron is traveling through a uniform electric field. The field is constant and given by E⃗ = (2.00*10-11N/C) i^ - (1.20*10-11N/C) j^. At t=0, the electron is at the origin and traveling in the x direction with a speed of 2.10 m/s.

A national college researcher reported that 67%of students who graduated from high school in 2012 enrolled in college.

What velocity will it take to slingshot a planet with 9.8m/s gravity

Systems engineers began as a field for which reason? To aid with large-scaled defense systems in the 1950s. To facilitate space travel in the 1960s. To discover new sources of fuel in the 1970s.

34. A steam engine operates between 300K and 600K, the maximum possible efficiency of this engine is a. 100% b. 75% c. 50% d. 25%

How many moles of phosphorus trichloride are in 200 grams of the molecule? 62.67 mol 27,466.6 mol 1.46 mol 0.69 mol

A starship passes Earth at 80% of the speed of light and sends a drone ship forward at half the speed of light rela - tive to itself. Show that the drone travels at 93% of the speed of light relative to Earth.

Rubies are used in electronics

Two kids are on a merry-go-round that is turning at a constant rate. ariel is near the outer edge, and bob is closer to the center. ariel has answer (smaller, the same, or greater angular speed?