An alpha particle has an atomic mass of
1 amu
2 amu
3 amu
4 amu

4 amu

Explanation:

Rutherford verified that the alpha particle is a set of two protons and two neutrons, that is, it is the nucleus of the helium atom. It has an electric charge equal to + 2e, and a mass of 4.002764 units of atomic mass (amu), that is, almost 4 times the mass of the hydrogen atom.

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

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.