If 4 letters are put at random into 4 envelopes, what is the probability that at least one letter gets into the correct envelope?
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If 4 letters are put at random into 4 envelopes, what is the probability that at least one letter gets into the correct envelope?
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- Problem 7: You place your ear onto a steel railroad track and hear the sound of a distant train through the rails At = 2.6 seconds before you do through the air. The speed of sound in steel is v, 6100 m/s, and and the air temperature is 24.5° C. Find the distance, D, to the train in meters. D= sin() cotan() cos() asin() atan() acotan() cosh() tan() ♫ ( acos() sinh() tanh() cotanh() Degrees O Radians Hints: 2% deduction per hint. Hints remaining: 2 Submit Hint 7 8 4 5 2 0 BACKSPACE EMA + - VO Feedback 9 6 3 HOME END CLEAR I give up! Feedback: 2% deduction per feedback.What would this one be I need help.One mole of atoms consist of 6.02 × 10^23 individual atoms. If one mole of unicorn atoms were spread uniformly over the surface of a sphere the size of the Earth, approximately how many atoms would be found per square meter? The average radius of the Earth is 6.38 × 10^3 km.
- The headway h is the average time between vehicles. On a highway carrying an average of 500 vehicles per hour, the probability P that the headway is at least t seconds is given by the following formula.t P = 0.87 (a) What is the limiting value of P? Explain what this means in practical terms. This means that the probability of finding very large headways is small (b) The headway can be calculated as the quotient of the spacing f in feet, which is the average distance between vehicles, and the average speed v, in feet per second, of traffic. Thus, the probability that spacing is at least f feet is the same as the probability that the headway is at least f/v seconds. Use function composition to find a formula for the probability Q that the spacing is at least f feet. Note: Your formula will involve both fand v. Q = (c) If the average speed is 90 feet per second, what is the probability that the spacing between two vehicles is at least 41 feet? (Round your answer to the nearest whole…Estimate the number of people in the world who are suffering from the common cold on any given day. (Remember that a person suffers from a cold for about a week, and assume that the average person catches a cold twice a year. The population of Earth is approximately seven billion.) O 10² O 105 O 108 O 10¹341-50. The speed of a file transfer from a server on campus to a personal computer at a student's home on a weekday evening is normally distributed with a mean of 60 kilobits per second and a standard deviation of 4 kilobits per second. (a) What is the probability that the file will transfer at a speed of 70 kilobits per second or more? (b) What is the probability that the file will transfer at a speed of less than 58 kilobits per second? (c) If the file is 1 megabyte, what is the average time it will take to transfer the file? (Assume eight bits per byte.)
- how do I calculate an average energy when there are three psi unknowns? PSI= c1*psi1(x) + c2*psi2(x) + c3*psi3(x) also, how do I calculate probability when there is an energy given?Using the same procedure to determine the fundamental equation of chemical thermodynamics (dG = –SdT + VdP) from the Gibbs free energy of a system (G = H – TS), can you please explain how to find the analogous fundamental equation for (A=U-TS)? Also, can you please handwrite the formula down instead of typing? I get confused with typed formulas sometime.A relationship is found between the number density of cars on a freeway during rush hour, N, and distance. The relationship can be written as k a'N No dr? From this you can conclude that O w = V No O v = No No O v =