masses m1 and m2 are stacked together on a level surface that has friction. The blocks are accelerating together to the right. There is static friction between the two blocks. Analyze the forces on each block
In: Physics
1. Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.)
The area to the right of z = 1.50 is _________
2. Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.)
The area to the left of z = −1.33 is ________
3. Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.)
The area between z = −2.25 and z = 1.41 is ________
4.Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.)
The area between z = −2.48 and z = −1.80 is ________
5. Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.)
μ = 5.0; σ = 2.4.
P(3 ≤ x ≤ 6) = ________
6. Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.)
μ = 109; σ = 12
P(x ≥ 90) = ________
In: Math
What is the pH of a 203 mL sample of 3.601 M acetic acid (CH3COOH) (Ka = 1.8 x 10-5)?
In: Chemistry
An educational psychologist is examining response times to an on-screen stimulus. The researcher believes there might be a weak effect from age, but expects a more pronounced effect for different color contrasts. She decides to examine a black on white (B/W) combination compared to 2 alternatives: red on white (R/W) and yellow on blue (Y/B). Here is the data for response times (in milliseconds):
Color Scheme | ||||
---|---|---|---|---|
B/W | R/W | Y/B | ||
Age | 16–17 | 10 26 16 22 11 36 31 22 |
20 19 31 7 43 16 20 23 |
7 20 33 43 3 22 24 19 |
18–19 | 26 18 25 13 34 15 17 21 |
17 35 37 39 47 36 15 19 |
30 30 44 22 35 35 27 22 |
|
20–21 | 20 29 29 18 23 25 41 26 |
28 19 25 18 40 30 26 28 |
16 38 27 25 42 42 35 39 |
Using MS Excel, conduct a 2-way ANOVA with α=0.05α=0.05. Fill in the summary table: P-values should be accurate to 4 decimal places and all other values accurate to 3 decimal places.
Source | SS | df | MS | F-ratio | P-value | Partial η2η2 |
---|---|---|---|---|---|---|
Age (AA) | 2 | |||||
Color (BB) | 2 | |||||
Interaction (A×B)(A×B) | 4 | |||||
Error | 63 |
In: Math
In: Accounting
The table lists the sugar content of two types of apples from three different orchards. At , test the claim that the sugar content of the apples and the orchard where they were grown are not related. Sugar Content Orchard 1 Orchard 2 Orchard 3 Apple Type 1 4 2 6 Apple Type 2 28 10 14
In: Math
Three charges are placed in the following locations: Q1 of -90.0µC at the origin; Q2 of +94.5µC at (0, 40.0 cm); and Q3 of +69.6 µC at (68.0 cm, 0).
a) Determine the total electric field at “P” located at (68.0 cm, 40.0 cm).
b) A fourth charge, q4 of +52.0 µC is placed at P. Find the total force on q4.
c) Determine the total potential V at P.
d) Does q4 have any electrical potential energy at P?
e) How much work is involved to move q4 from P to a new location “S” at (136 cm, 0)? Did the electric field do the work or was an outside agent involved to get q4 from P to S?
Please be as clear and detailed as possible, explaining each step if possible
In: Physics
Terrain navigation is a key component in the design of unmanned aerial vehicles (UAVs). Vehichles such as a robot or a car, can travel on land; and vehiches such as a drone or a plane can fly above the land. A UAV system contains an on board computer that has stored the terrain information for the area in which it is to be operated, Because it knows where it is at all times (often using a global positioning system (GPS) receiver), the vehicle can then select the best path to get to a designed spot. If the destination changes, the vehicle can refer to its internal maps and recompute the new path. The computer software that guides these vechicles must be tested over a variety of land formations and topologies. Elevvation information for large grids of land is available in computer databases. One way of measuring the "difficulty" of a lanad grid with respect to terrain navigation is to determine the number of peaks in the grid, where a peak is a point that has lower elevations all around it. For this problem, we want to determine whether the value in grid position [m] [n] is peak. Assume that the values in the four positions shown are adjacent to grid position [m] [n]
grid [m-1] [n] | ||
---|---|---|
grid [m][n-1] | grid [m][n] | grid [m][n+1] |
grid [m+1] [n] |
Write a program in C PROGRAMMING that reads elevation data from a data file named grid1. txt. (this file you have to create and name it as grid 1.txt.) data as shown below which represent elevation for a grid that has 6 points along the side and seven points along the top ( the peaks have been highlighted and underlined):
5039 5127 5238 5259 5248 5310 5299
5150 5392 5410 5401 5352 5820 5321
5290 5560 5490 5421 5530 5831 5210
5110 5429 5430 5411 5459 5630 5319
4920 5129 4921 5821 4722 4921 5129
5023 5129 4822 4872 4794 4862 4245
Then prints the number of peaks and their locations. Assume that the first line of the data file contains the number of rows and the number of columns for the grid of information. These values are then followed by the elevation values, in row order. The maximum size of the grid is 25 rows by 25 columns.
Hints:
In: Computer Science
Identify three different schools of Buddhism. How are these schools similar in their beliefs and practices? How do they differ? Cite supporting information from the topic materials.
In: Psychology
def sequentialSearch(theList, item):
#**** to be changed:
# counts the iterations of the while loop and
returns this value
found = False
index = 0
while index < len(theList) and not
found:
if theList[index] ==
item:
found = True
index = index +
1
return
found
def binarySearch(theList, item):
#**** to be changed:
# counts the iterations of the while loop and
returns this value
startIndex = 0
endIndex = len(theList)- 1
found = False
while startIndex <= endIndex and not
found:
middleIndex =
(startIndex + endIndex)//2
if item ==
theList[middleIndex]:
found = True
elif item >
theList[middleIndex]:
startIndex = middleIndex + 1
else:
endIndex = middleIndex - 1
return found
# program for testing the search algorithms
dataSet = [-200, -190, -180, -170, -160, -110, -105, -74, -30, -17,
-12, -1, 4, 5, 13, 26, 37, 42, 62, 96, 100, 110, 120,130]
print("\nSuccessful sequential search - all elements of the data
set")
totalComparisons = 0
#**** to be completed:
# list traversal on the dataSet list:
# for each item: perform a sequential
search and
#
display the number of comparisons,
# count the total number of
comparisons
print("Average number of comparisons:
"+str(totalComparisons/len(dataSet)))
print("\nUn-successful sequential search")
target =
196
# target not in the dataSet
comparisons = 0 #**** to be changed: perform a sequential search
for target
print ("target " + str(target), "\t comparisons used " +
str(comparisons))
print("\nSuccessful binary search - all elements of the data
set")
totalComparisons = 0
#**** to be completed:
# list traversal on the dataSet list:
# for each item: perform a binary search
and
#
display the number of comparisons,
# count the total number of
comparisons
print("Average number of comparisons:
"+str(totalComparisons/len(dataSet)))
print("\nUn-successful binary search")
target =
196
# target not in the dataSet
comparisons = 0 #**** to be changed: perform a binary search for
target
print ("target " + str(target), "\t comparisons used " +
str(comparisons))
make some change to the python according to the comment line and complete the following question.
Sequential Search Algorithm |
Binary Search Algorithm |
||
Successful searches |
Successful searches |
||
Average number of comparisons |
Average number of comparisons |
||
Maximum number of comparisons found at index _____________ |
Maximum number of comparisons found at index _____________ |
||
Minimum number of comparisons found at index____________ |
Minimum number of comparisons found at index____________ |
||
Un-Successful search |
Un-Successful search |
||
Number of comparisons |
Number of comparisons |
In: Computer Science
1. Using the standard enthalpies of formation, what is the standard enthalpy of reaction?
CO(g) + H2O(g) --> CO2(g) + H2(g)
2. Calculate the standard enthalpy change for the following reaction at 25 �C.
HCl(g) + NaOH(s) --> NaCl(s) + H2O(l)
3. For a particular isomer of C8H18, the following reaction produces 5113.3 kJ of heat per mole of C8H18(g) consumed, under standard conditions.
C8H18(g) + 25/2O2(g) --> 8CO2(g) + 9H2O(g) (deltarxn = -5113.3 kJ)
What is the standard enthalpy of formation of this isomer of C8H18(g)?
4. Many power plants produce energy by burning carbon-based fuels, which also produces carbon dioxide. Carbon dioxide is a greenhouse gas, so over-production can have negative effects on the environment. Use enthalpy of formation data to calculate the number of moles of CO2(g) produced per megajoule of heat released from the combustion of each fuel under standard conditions (1 atm and 25 �C).
coal, C(s, graphite):
natural gas, CH4(g):
propane, C3H8(g):
octane, C8H18(l) (?Hf� = �250.1 kJ �mol-1):
In: Chemistry
A 460 turn solenoid, 25 cm long, has a diameter of 2.2 cm. A short 2.6 cm diameter 12 turn coil is wound around the solenoid at its midpoint. What rate of change of current in the solenoid, will cause a 220
In: Physics
In: Operations Management
Do the type-D and JK flip flops respond to the same clock edge?
Explain how toggle mode is the same as division by two.
What is the difference between a synchronous input (D, J, or K) and an asynchronous input (PR or CLR)?
*please no handwritten answers
In: Computer Science
A freight company uses a compressed spring to shoot 1.90kg packages up a
v = |
Yes | |
No |
In: Physics