A wave with a long wavelength has what kind of frequency and energy

A vertical wire carries current in the upward direction. an electron is traveling parallel to the wire. what is the angle α between the velocity of the electron and the magnetic field of the wire?

A characteristic necessary to give a physical object movement?

A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What multiple of Earth's radius RE gives the radial distance (from the Earth's center) the projectile reaches if (a) its initial speed is 0.

What is the energy equivalent of an object with a mass of 1.83 kg? 1.65 * 1017 J 2.92 * 1017 J 3.10 * 1017 J 5.49 * 1017 J

Which reaction fuels the burning of the sun

Changing the direction of current will or will not affect the strength of an electromagnet

A swimming pool has the dimensions of 10 meters, 5 meters, and 1 meter. What is the pool's volume? 50 m 50 m3 50 m2 25 m3

A child pushes horizontally on a box of mass m which moves with constant speed v across a horizontal floor. The coefficient of friction between the box and the floor is μ. At what rate does the child do work on the box?

What two qauntities must be known to calculate the density of a sample of matter

An element's atomic number is 38. How many protons would an atom of this element have?