A baseball bat has a mass of 0.8 kg and is 0.7 m long. It's held vertically and then allowed to fall. What is the bat's angular acceleration when it has reached 55.6 ° from the vertical? (Model the bat as a uniform rod).

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.

In a hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. how many unique charge-pairs are there (without double counting)?

Debris produced by mining is called