Answer:his tension is 262 N
Explanation:1) Call T the tension of the rope2) Split T into its horizontal and vertical components.3) Horizontal component of the tension, Tx = T cos(55°)4) Vertical component of the tension, Ty = T sin (55°)5) Force equilibrium in the vertical direcction:∑Fy = 0Ty + normal force - weight of the sled = 0Call N the normal forceTy + N - 56 kg * 9.8 m/s^2Ty + N = 56 kg * 9.8 m/s^2Ty + N = 548.8NT sin(55) + N = 548.8N6) Force equilibrium in the horizontal directionconstant velocity => ∑Fx = 0Tx - Fx = 0Tcos(55) - Fx = 07) Fx is the friction force.The friction force and the normal force are related by the kinetic friction coefficient.Call μk the friction coefficientFx = μk N=> Tcos(55) - μk N = 0Tcos(55) - 0.45N = 08) Solve the system of two equations:Eq (1) T sin(55) + N = 548.8Eq (2) T cos(55) - 0.45N = 0Eq(1) 0.819T + N = 548.8Eq(2) 0.574T - 0.45N = 0The solution of the system is T = 262.01 N and N = 334.21 NThen T ≈ 262N
<span>Most important information when passing near a lighthouse is the water depth.
</span>Today there are many complex navigation instruments,but in the past the lighthouse were the only navigation sailors had. However, the lighthouse still is very important in the navigation. There is an information chart on every lighthouse that gives information about <span> the location of the lighthouses and the depth of the water. With these information an experienced sailor can navigate even without modern instruments.</span><span>
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Answer:
If you threw a baseball at the speed of light, the ball would move 299,792,458 kilometers per second. Unlike light, a baseball has mass as it approaches the speed of light, its mass would increase towards infinity. As nothing can go faster than the speed of light, it is known as the speed limit of the universe.
Explanation:
Answer:
299,792,458 m/s = speed of light
Explanation:
Answer:
1. C. The change is easily reversible
2. A. a physical change
Explanation:
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