Which of the following lists the composition of the Earth's outer core?

A. calcium, potassium

B. silicon, aluminum, calcium, sodium and potassium

C. iron, nickel

D. oxygen, magnesium, iron, aluminum, and calcium

If a system has 475 kcal of work done to it, and releases 5.00 * 102 kJ of heat into its surroundings, what is the change in internal energy of the system?

What transfer of energy is occurring between magnetism and electricity

How much heat, in joules and in calories, must be added to a 75.0Â-g iron block with a specific heat of 0.449 j/g °c to increase its temperature from 25 °c to its melting temperature of 1535 °c?

Roman citizenship guaranteed Paul: protection from injustices speedy passport to any distant land under Grecian rule freedom to preach the gospel quick transport to lands under Roman rule

The superheroine Xanaxa, who has a mass of 69.1 kg, is pursuing the 75.3 kg archvillain Lexlax. She leaps from the ground to the top of a 183 m high building then dives off it and comes to rest at the bottom of a 15.

What's earths most precious element?

An example of forced convection is the movement of hot air by a fan. true or false?

An object has a kinetic energy of 233 J and a momentum of magnitude 20.4 kg·m/s. Find the speed and the mass of the object.

What is the average velocity of atoms in 1.00 mol of neon (a monatomic gas) at 465 K? For m, use 0.0202 kg.

What type of visible light spectrum does the sun produce?