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Bookmark or Share- A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall ...dy/dt=0.6 m/s . At the specified moment in the problem, the man is standing at point D with his head at point E. At that moment, his shadow on the wall is y=BC. The two right triangles DeltaABC and DeltaADE are similar triangles. As such, their corresponding sides have equal ratios: (AD)/(AB)=(DE)/(BC) 8/12=2/y, :. y=3 meters If we consider the distance of the man from the building as x then ...
- A family has 3 children. Find the probabilities. A) all boys B) All ...We have 3 children, with each one possibly being a boy or a girl. And so for each child, the probability of being a boy is #1/2# as is the probability of being a girl #1/2#
- Combinations and Permutations - Statistics - SocraticAt a restaurant, you can choose from 2 appetizers, 4 main courses, and 3 desserts. How many different meals, each consisting of one appetizer, one main course, and one dessert, can be created?
- A farmer has 200 m of fencing with which he wishes to ... - Socratic5000m^2 is the required area. I have used elementary concepts of maxima and minima. Let area be A and the sides of rectangular field be x and y; So, A=x*y Now, one side of the rectangle is already made with a fence. There are 4 sides, two sides of x meters and two sides of y meters. Let a side of y meters be already fenced. Then, the remaining three sides are to be fenced with a fence of 200m ...
- For s, p, d, and f orbitals, how many electrons can each hold?See below. The subshells s, p, d, and f contain the following number of orbitals respectively, where every orbital can hold up to two electrons maximum: s: 1 orbital, 2 electrons. p: 3 orbitals, 6 electrons. d: 5 orbitals, 10 electrons. f: 7 orbitals, 14 electrons.
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