Sebuah benda melakukan gerak harmonik dengan persamaan simpangan y=5 sin 6πt dengan satuan SI. tentukan a. persamaan kecepatan
b. kecepatan getaran pada saat 2 sekon
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Um vetor representa um deslocamento cujo módulo é 20 m. se v faz um ângulo de 60 graus com a horizontal, qual é o valor das componentes horizontal e vertical deste vetor?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Select all the correct answers. which three statements about electromagnetic radiation are true?