Phương trình chuyển động của một chất điểm dọc theo trục Ox có dạng:x = 5 + 60t , x tính bằng mét (m), t đo bằng giờ (h).Chất điểm đó xuất phát từ điểm nào, chuyển động với vận tốc bằng bao nhiêu?

Argon, neon, and xenon are examples of

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)

Steelhead trout migrate up stream to spawn. occasionally they need to leap up small waterfalls to continue their journey. fortunately, steelhead are remarkable jumpers, capable of leaving the water at a speed of 8.0 m/s. a. what is the maximum height a steelhead trout can jump? b. leaving the water at 8.0 m/s, the trout lands on top of the water fall 1.8 m high. how long was it in the air?