A 2-kg object is dropped from a height of 10 m. Just before hitting the ground, what is its kinetic energy? Assume no air resistance. Use g = 9.8 m/s².

The diagram shows two point charges. Charge A has +4 μC and charge B has +2 μC. They are separated by 0.10 m. What...

The diagram shows electric field lines around two point charges. What is the sign of each charge?

In the circuit shown, a 12 V battery drives current through two resistors in series: R₁ = 4 Ω and R₂ = 8 Ω. What is...

The diagram shows a straight wire carrying current I to the right, placed in a magnetic field B pointing INTO the...