A ball is thrown horizontally from the top of a building 30.1 m high. The ball strikes the ground at a point 66.8 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s
November 8, 2014
A player throws a ball up and toward a wall that is 17 feet high. The height h in feet of the ball after t seconds after it leaves the player's hand is modeled by h=-16t^2+25t+6. If the ball makes it to where the wall is, will it go over the wall or hit the wall?
November 2, 2014
Suppose you are given an endless supply of qubits in the state (1/√2)|00>+(e^iϕ/√2)|10>. To estimate the phase angle ϕ, you run Fourier sampling (i.e. Hadamard on each qubit followed by a standard basis measurement) on this state repeatedly. After ...
October 12, 2013
A block of mass m is released from a height of R. The block slides down along the path ABC. At point C the block collides a spring of stiness k. (a) If the circular arc AB is frictionless and the coecient of kinetic friction between the block and surface BC is k...
March 26, 2013
An elevator's cable is cut causing the elevator to slide down thhe elevator shaft on the emergency brakes and wheels. Suppose that the mass of the elevator and passengers were 1500 kg, and the frictional force (wheels on tracks)was 9000N Draw a force diagram determine the ...
December 9, 2012
An amusement park charges $20 up front to rent a canoe. There is an additional charge of 150 cents per hour. Write an equation that relates the total amount of rent R in cents to time h in hours.
October 11, 2011
Is there a rule to figure out if this is a true or false statement? A sample size of 900 is not large enough to conclude that the sampling distribution of p is a normal distribution, when the estimate of the population proportion is .995.
October 24, 2010
When you are interviewed, be relaxed and friendly. Write a thank-you note to the potential employer when the interview is over. The most effictive combination of sentences 10 and 11 would include which of the following groups of words? a)friendly;but write b)friendly;the write...
May 11, 2010
Familiarize oneself with the types of jobs most often available, with the various employment offices, and with the skills most in demand. what correction should be made? a)change Familiarize to Familiarized b)replace oneself with yourself c)insert a comma after various d)...
May 11, 2010
First, you should study the openings posted in the local newspapers-subscribe to all of them if possible, or read it at the public library. what correction should be made? a)replace you with one b)replace you with they c)insert a comma after openings d)replace it with them e)...
May 11, 2010
If I have a square and I draw two lines across the middle that interestect what would be the interior angles of that intersection. I know the square itself is 360 degrees and the inner corners are all 45 degrees. I am not sure how to calculate the interior ones. ex Suppose ...
February 1, 2010
Replace ?s with prepositions à, de, pour, etc. or some phrases do not need prepositions. Are these correct? Nous sommes sûrs ???de??? gagner auz prochaines elections. Je ferai ????? installer un lave-vaisselle cet été no preposition ...
January 26, 2010
I am working on a crossword puzzle involvin northern climes and the question I have is, what is the foreclosure of academic studies (sometimes associated with a blizzard). The word or phrase is 14 letters long and the 5th letter is and o the 8th letter is an l and the 14th ...
December 26, 2009
True beyond a reasonable doubt; it may be that consumption will drop in the future or that discovery of new reserves will increase, but as long as consumption at some level continues, eventually all the oil will be used up.
April 14, 2008
who is the doctor that is working on the first car that will drive in th sky Since this is not my area of expertise, I searched Google under the key words "flying car history" to get these possible sources: http://travel.howstuffworks.com/flying-car1.htm http://en....
March 27, 2007
oh no!!! i have a report on the Blarney castle in Ireland due tomorrow and i don't know how i should write it to make it sound good!!! what should i do to get it done?? i need a quick answer!!! help!!!!!!!! Here is the best site on the web on writing an essay...http://www....
November 1, 2006
There has to be a precipitate of calcium nitrate, Ca(NO3)2, and sodium chloride, NaCl because when I clicked none, it came out wrong. Please help http://en.wikipedia.org/wiki/Solubility check the solubility table there. Nitrates, and chlorides are soluble.
October 29, 2006