A child wants to pump up a bicycle tire so that its pressure is 1.2 × 105 Pa above that of atmospheric pressure. If the child uses a pump with a circular piston 0.035 m in diameter, what force must the child exert?
Select one:
A. 120 N
B. 89 N
C. 76 N
D. 54 N
E. 240 N
In: Physics
One kilogram of water in a piston-cylinder assembly undergoes the two internally reversible processes in series. P1 = 0.1 MPa, T1 = 100C, s1 = s2 = 7.3164 kJ/kg*K, P2 = 0.5 MPa, T2 = T3, P3 = 1.5 MPa, and u1 = 2506.7 kJ/kg. Find T2. Legibly show and explain all work, units, and formulas.
In: Mechanical Engineering
14) Suppose a low-boiling liquid like ammonia is placed in a heat reservoir and part of the energy of the surroundings is used to vaporize the liquid.The adiabatically expanding gas does work by driving a piston and during the expansion the gas cools until it condenses to a liquid, the liquid is once again vaporized using energy available from the surroundings, and the cycle is repeated. Can such an engine be made operational?
In: Chemistry
Consider the reaction
A(g)+B(g)->C(g)
For which Kc=1.30*102
Assume that .406 mole C(g) is placed in a cylinder. The temperature is 300 K and the barometirc pressure on the piston (which is assumed to be massless and frictionless) is constant at 1.00 atm. The original volume (before the C(g) begins to decompose) is 10.00 L. What is the volume of the container at equilibrium?
In: Chemistry
Type or paste que
One mole of an ideal gas CP=7R2 in a closed piston/cylinder arrangement is compressed from Ti=200 K , Pi=0.5 MPa to Pf=5 MPa by following paths:.
Calculate ΔU, ΔH, Q and WEC for both paths.
NOTE: Keep the answers in terms of ‘R’.
stion here
In: Other
An ideal gas (which is is a hypothetical gas that conforms to the laws governing gas behavior) confined to a container with a massless piston at the top. (Figure 2) A massless wire is attached to the piston. When an external pressure of 2.00 atm is applied to the wire, the gas compresses from 5.90 to 2.95 L . When the external pressure is increased to 2.50 atm, the gas further compresses from 2.95 to 2.36 L .
In a separate experiment with the same initial conditions, a pressure of 2.50 atm was applied to the ideal gas, decreasing its volume from 5.90 to 2.36 L in one step.
If the final temperature was the same for both processes, what is the difference between q for the two-step process and q for the one-step process in joules?
part A:
An ideal gaseous reaction (which is a hypothetical gaseous reaction that conforms to the laws governing gas behavior) occurs at a constant pressure of 50.0 atm and releases 63.1 kJ of heat. Before the reaction, the volume of the system was 9.00 L . After the reaction, the volume of the system was 2.60 L .
Calculate the total internal energy change, ΔE, in kilojoules.
Part B:
In: Chemistry
Python3
Write a program to implement the Pokemon game should ask the user to enter their type and compare it with a randomly chosen computer type and correctly display who wins/ties.
In: Computer Science
According to an airline, flights on a certain route are on time 80% of the time. Suppose 20 fights are randomly selected and the number of on-time flights is recorded
(a) Explain why this is a binomial experiment
(b) Find and interpret the probability that exactly 12 flights are on time.
(c) Find and interpret the probability that fewer than 12 flights are on time
(d) Find and interpret the probability that at least 12 flights are on time
(e) Find and interpret the probability that between 10 and 12 flights, inclusive, are on time.
(a) Identify the statements that explain why this is a binomial experiment Select all that apply
A. The experimentis performed until a desired number of successes is reached
B. The probability of success is the same for each trial of the experiment,
C. There are three mutually exclusive possibly outcomes, arriving on time, arriving early, and arriving late
D. The experiment is performed a fixed number of times
E There are two mutually exclusive outcomes, success or failure.
F. The trials are independent G. Each trial depends on the previous trial
In: Math
Question 10
The probability that a student uses Smarthinking Online Tutoring on a regular basis is 0.44 . In a group of 18 students, what is the probability that exactly 6 of them use Smarthinking Online Tutoring on a regular basis?
Write only a number as your answer. Round to 4 decimal places (for example 0.2416). Do not write as a percentage.
Question 11
The probability that a randomly selected commuter listens to audiobooks during their commute is 0.44 . Suppose that a sample of 10 commuters is selected, what is the probability that at most 3 of them listen to audiobooks?
Write only a number as your answer. Round to 2 decimal places (for example 0.24). Do not write as a percentage.
Question 12
At a car rental agency, 0.34 of the cars are returned on time. A sample of 11 car rentals is studied. What is the probability that more than 3 of them are returned on time?
Write only a number as your answer. Round to 2 decimal places (for example 0.24). Do not write as a percentage.
In: Statistics and Probability
Initial Post Instructions Topic: Poisson Probability Distribution The Poisson Distribution is a discrete probability distribution where the number of occurrences in one interval (time or area) is independent of the number of occurrences in other intervals. April Showers bring May Flowers!! Research the "Average Amount of Days of Precipitation in April" for a city of your choice. In your initial post, Introduce Introduce the City and State. Let us know a fun fact! Tell us the average number of days of precipitation in that city for the month of April. Cite your Source Calculations What is the probability of having exactly 10 days of precipitation in the month of April? What is the probability of having less than three days of precipitation in the month of April? What is the probability of having more than 15 days of precipitation in the month of April? Analysis Write a sentence for each of the probabilities explaining what those probabilities mean in context of days of precipitation in your chosen city. Would any of the situations be considered unusual? Why or Why Not? Use Atlanta GA
In: Statistics and Probability