We choose one of the words in the following sentence

We choose one of the words in the following sentence uniormly in random and then choose of the letters of that word.

a.) Find the probability that the chosen letter is R

b.) Let X denote the length of the chosen word. Determine the Probabilty mass function of X.

An arrow starting from rest leaves the bow with a speed of : an arrow starting from rest leaves the bow with a speed of 10.0 ms. if the average force exerted on the arrow by the

How many haircuts worth of hair must be saved to soak up a : human hair is very good at soaking up oil spills absorbing 15 of its own weight in oil. an average human hair measures

Three of the 30 balls are selected at random played with : there are 30 tennis balls in a box of which 18 are new and have never been used. three of the 30 balls are selected at

What is the magnitude and direction of the electric field : what is the magnitude and direction of the electric field at a point midway through -8microc and a 6microc charge 4cm

We choose one of the words in the following sentence : we choose one of the words in the following sentence uniormly in random and then choose of the letters of that word.a.

The rest exits at another location with a pressure of 006 : steam at 160 bar 520 degrees celsius and with a mass flow rate of 250 kgs enters a turbine operating at steady state

After the gas is ejected the mass of the astronaut now : an astronaut in his space suit and with a propulsion empty of gas propellant stapped to his back has a mass of 146kg.

Calculate the ratio of the exit flow area to the inlet flow : air enters an insulated diffuser operating at steady state with a pressure of 105 nm2 and a temperature of 57 degrees

Calculate the uncertainty level under a 99 of confidence : a certain length measurement is made with the following resultsreading 1 2 3 4 5 6 7 8 9 10x m 12.54 12.73 12.44 12.51