Which is the major source of energy for most of earth's processes

(1) radioactive decay within earth's interior

(2) convection currents in earth's mantle

(3) radiation received from the sun

(4) earthquakes along fault zones

The contribution of Tycho Brahe was primarily his calculations observation inventions theories

If an object of mass 6 kg has an acceleratoon of 9 m/s2, what is the unbalanced force acting on it?

A 34-turn circular coil of radius 5.00 cm and resistance 1.00 Ω is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.010 0t + 0.

Given that a ball has a mass of 0.16kg calculate it's weight take gravity 10N/kg

A ray of light is incident on a flat surface of a block of polystyrene, with an index of refraction of 1.49, that is submerged in water. The ray is split at the surface, where the angle of refraction of the transmitted ray is 19.1°.

What besides mass and gravity, what other factor affects gravitational potential energy?

A satellite is in a circular orbit about the Earth at a distance of one Earth radius above the surface. What is the speed of the satellite? (The radius of the Earth is 6.4 * 106 m, and G = 6.67 * 10-11 N⋅m 2 / kg2.)

What is the meaning of the washing motion of the younger monk? is it the same when dobbins does it?

A teacher pulls a box of books on a horizontal floor with a force of 290 N directed 40.9 degrese above the horizontal. the coefficiant of kinetic friction between the box and the floor is 0.184. the mass of the box and books is 44.5 kg.

The dark colored belts on jupiter are brighter than the surrounding regions and the light colored zones when viewed in infrared or heat radiation because