Draw free-body diagrams and identify all missing forces, including net force, for each situation: You push a 15 kg box with 45 N and it has a net force of 20 N acting on it

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.

The speed of light can be used to measure the

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)