Báo cáo thực hành Bài 1: Sóng trên dây: https://phet. colorado. edu/vi/simulation/wave-on-a-string< br /> Bài 2: Cầu cân bằng: https://phet. colorado. edu/sims/html/circuit-construction- kit-dc-virtual-lab/latest/circuit-c onstruction-kit-dc-virtual-lab_vi. html

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s