In a probe that uses the Hall effect to measure magnetic fields, a 13.4 A current passes through a 1.72 cm -wide 1.12 mm -thick strip of sodium metal. If the Hall emf is 1.72 μV , what is the magnitude of the magnetic field (take it perpendicular to the flat face of the strip)? Assume one free electron per atom of Na, and take its specific gravity to be 0.971

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.

conservation of mass

mass before something happens = mass afterwards