Answer it correctly please. I A cannonball is shot from the edge of a 20-m-high vertical cliff with an initial speed of 50 mis at an angle of 40° above the horizontal. Assumethat the ground at the bottom of the clfis flat and level. How long will the cannonball be in the air? (See the diagram below.) Assume that g =9.8 mis?Vo =50 m/sCannonball40020 mCa. 9.1sOb.8.1Oc7.16Od. 5.1sOe.6.1s

Given data Velocity of canon ball (vo) = 50 m/s angle of projection (θ) = 40o To determine Time…

Answered: A cannonball is shot from the edge of a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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When rowing downstream consider the following scenario. The current of the water is moving at 2 m/s in the direction you are rowing. The coefficient of drag between your boat and the water is 1.2, the area in contact with the water is 0.1 m2 and the density of the water is 1000 kg/m3. You are moving at a velocity of 4 m/s into a head wind of 4 m/s. Your coefficient of drag between you and the air is 1.4, the area in contact with the air is 0.4 m2 and the density of the air is 1.2 kg/m3. Your goal is to create a net force moving downstream that is equal to 100 N. How much force must you exert with the oar and in what direction to achieve this net force downstream?
A horizontal water jet with a 2.5 cm diameter and a speed of V =40 m/s relative to the ground is deflected by a 60° stationary cone whose base di ameter is 25 cm The height of water along the cone is 0.125cm. Disregarding the effect of gravity and the shear forces, the horizontal force F needed to hold the cone stationary is
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Consider two different flows over geometrically similar airfoil shapes,one airfoil being twice the size of the other. The flow over the smallerairfoil has freestream properties given by T∞ = 200 K, ρ∞ = 1.23 kg/m3,and V∞ = 100 m/s. The flow over the larger airfoil is described byT∞ = 800 K, ρ∞ = 1.739 kg/m3, and V∞ = 200 m/s. Assume thatboth μ and a are proportional to T 1/2. Are the two flows dynamicallysimilar?
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