Emptied by the main pump in four hours
An oil tanker can be emptied by the main pump in four hours. an auxilary pump can empty the tanker in 9 hours. If the main pump started at 9a.m., when should the auxiliary pump be started so the tanker is emptied by noon?
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Eight students in a class are asked how many of other seven students they know. One student knows all other students but only two students know the same number of students. Describe that these two students know each other.
Describe that K6 haves three spanning trees T1 , T2 , and T3 such that { E(T1), E(T2) , E(T3) } is the partition of E(K6) and the degrees of the vertices of each tree are 3, 3, 1, 1, 1, 1.
Assume that we have the collection of six coins, exactly one of which is counterfeit and weighs less than each authentic coin. Use a decision tree to describe a method for indentifying the conunterfeit coin using two weighings of a balance scale.
Two gasoline, type A and type B, have octane ratings of 80 and 92 respectively. Type A costs $2.13 per gallon as well as type B costs $3.28 per gallon. Find out the blend of minimum cost with an octane rating of at least 90. Determine the minimum
Two cars are approaching an intersection. One is 3 miles South of the intersection and is moving at a constant speed of 40 mph. At the same time, the other car is 4 miles East of the intersection and is moving at a constant speed of 50 mph.
Let R be relation on Z such that xRy if and only if x.y is even. For each and every of the following question, if your answer is "no" provide counter example. If your answer is "yes" prove that relation has that property.
Sugggest a mass-spring system with unit mass (m = 1), spring constant k = 9, critically damped, and no external force. Suppose that the oscillator starts at rest, and slightly compressed, at the point minus two. What is y(t)?
A car leaves san diego at 1 pm traveling at the constant rate of 40 mph toward los angeles. Thirty minutes later, another car leaves san diego traveling toward los angeles at the constant speed of 55 mph. After what time is the distance between t
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Risky social support Another way in which the Internet can increase children's and adolescents' mental health problems is by fostering communication
When developing a grant proposal, it's important to set clear and measurable goals. One way to do this is by making sure your goals follow the SMARTIE system
Although the Internet can be a helpful outlet for some youth in terms of exploring their sexual identify (e.g., LBGT youth who live in small, conservative commu
Cyberbullying An additional risk of Internet communication is cyberbullying, which is when someone engages in behavior to hurt someone
Respond to at least two of your colleagues (one assigned to each of the other two disorders) on two different days and compare your assigned disorder
Its key advantage is high internal validity; its disadvantage is that randomization is often ethically or practically impossible.
Reflect: Briefly describe a personal belief or opinion you hold (e.g., a stance on a political issue, a preference for a certain type of media).