What is the highest phoney bees beat their wings, making a buzzing sound at a frequency of 2.3 × 102 hertz. what is the period of a bee's wing beat? oint on a wave called?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

Which of these metals are magnetic?

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward