Which two layers of Earth are mainly composed of metallic elements such as nickel and iron, which are abundant in meteoroids and comets?

Inner core

outer core

lower mantle

upper mantle

crust

Which voice can produce a pitch that has a speed of 343 m/s and a wavelength of 0.68 m? Check all that apply. bass baritone tenor contralto sopran

What type of particles flow between objects when they are charged by friction or conduction?

1) Alchohol, a commonly used psychoactive drug, is a Select one: A. depressant B. stimulant x C. opiate D. hallucinogen 2) in a party, a friend invited Letia to try taking a drug. She told Letia, "This is great stuff.

What remains constant during the trajectory of an object

How long does light take to travel from the sun to earth? heres the exact question: light travels at 300,000 km. s. The sun is a total of 148 million kilometres from the earth. How long does it take light to travel from the sun to the earth

What is a magnetic field and how does it interact with magnetic materials?

What is significant about holden sitting on the radiator?

Which of the following occurs in meiosis that does not occur in mitosis 1 fertilization occur 2 body cells are made 3 sex cells are made 4 cell division occurs

A hot air balloon is hovering in the air when it drops a 40 Kg food package to some lost golfers. If the package is dropped from an altitude of 500 m and air resistance can be neglected, how fast is the package moving when it hits the ground?

you often hear people particularly TV announcers talk about "high rate of speed" what do you think they mean according to the specifics of physics definitions what are they really saying