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

You can increase the strength of an electromagnet's field by a. decreasing the current in the solenoid. b. decreasing the number of loops in the solenoid. c. using a stronger ferromagnetic material for the core. d. winding the coils more loosely.

Given a temperature of 25 Kelvin, what is the approximate temperature in degrees Celsius? A. - 348°C B. - 273°C C. - 248°C D. 398°C

Which situation is the BEST example of inertia?

A 200-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope.

If element X has 33 protons, how many electrons does it have?

What is a descriptions of an animal cell's nucleus?

What did Issac Newton think he could describe?

Which two states share the property of changing shape in different containers? A. Liquids and gases B. Gases and solids C. Solids and liquids D. Solids and plasmas

Which type of soil is the most permeable? A. sand B. silt C. loam D. clay

If your mass is 20kg, and you stand on the scale (witch is your force), and the acceleration due to gravity is10m/s^2, what does the scale says your weight is?