mt
Popular questions and responses by mt
physics
While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.53 m/s. The stone subsequently falls to the ground, which is 14.7 m below the point where the stone leaves your hand. At what speed does the stone
asked on May 2, 2013 
Stats
I roll a pair of fair dice and compute the number of spots on the two sides facing up. Denote this total by X. The probability distribution of X is X Prob 2 1/36 3 2/36 4 3/36 5 4/36 6 5/36 7 6/36 8 5/36 9 4/36 10 3/36 11 2/36 12 1/36 The probability that
asked on July 2, 2013 
STATS HELP
Final averages are typically approximately normally distributed with a mean of 72 and a standard deviation of 12.5. Your professor says that the top 8% of the class will receive an A, the next 20% a B, the next 42% a C, the next 18% a D, and the bottom 12%
asked on April 16, 2015 
Physics
The angular speed of an automobile engine is increased at a constant rate from 1200rev/min to 3000rev/min in 12s. How many revolutions does the engine make in this 12s interval? I worked it out to be 25200 rev. Is that right?
asked on December 16, 2010 
probability problem
The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of a fatal accident over a lifetime? Explain your reasoning
asked on September 16, 2008 
Statistics
1. In a study of heart disease in male federal employees, researchers classified 170 volunteer subjects according to their socioeconomic status (SES) and their smoking habits. SES categorized as high and low. Individuals were asked whether they were
asked on June 26, 2014 
MITx: 2.01x
Q2_1: QUIZ 2, PROBLEM #1 The shaft ABC is a solid circular cylinder of constant outer diameter 2R and length 3L. The shaft is fixed between walls at A and C and it is composed of two segments made of different materials. The left third of the shaft (AB) is
asked on July 26, 2013 
math
Reza is helping En Shah to make a box without the top.The box is made by cutting away four squares from the corners of a 30cm square piece of cardboard as shown in Figure 1 and bending up the resulting cardboard to form the walls of the box.
asked on June 8, 2015 
Calc 2
I'm asked to find the arc length of the curve y=3+(1/2)sinh(2x) from 0 to 1. I figured it out up to the integral of sqr(1+(cosh(2x))^2) from 0 to 1, but I'm not sure how to go on to solve it.
asked on April 3, 2012 
math
A market research company finds that traffic in a local mall over the course of a day could be estimated by the function P(t)=1800cos(𝝅/𝟔𝒕)+𝟏𝟖𝟎𝟎 where P,is the number of people going to the mall ,and t is the time, in hours ,after the
asked on June 8, 2015 
Stats
The incomes in a certain lg. population of college teachers have a normal distribution with a mean of $35,000 and st. dev. of $5000. Four teachers are randomly selected. What is the probability their average salary will exceed $40,000?
asked on July 2, 2013 
Science
A newspaper story on AIDS reports that an allele (R) confers complete resistance to HIV when homozygous and that 1% of the human population is resistant (RR). The story also states that 20% of the population carries one copy of the resistance allele (i.e.,
asked on April 7, 2013 
math
given a right triangle ABC with the right angle at B find AB if AC = 25 in and BC = 6 in Approximate the length of AB to two decimal places
asked on May 4, 2012 
math
A market research company finds that traffic in a local mall over the course of a day could be estimated by the function P(t)=1800cos((pie(9))/6 t)+1800 where P,is the number of people going to the mall ,and t is the time, in hours ,after the mall opens.
asked on June 8, 2015 
MITx: 2.01x
Q2_2: QUIZ 2, PROBLEM #2 The composite beam AB, of length L=2m, is free at A (x=0) and fixed at B (x=L) and is composed of a round cylindrical core of constant radius R0=1cm bonded inside a sleeve of thickness R0 (outer radius 2R0=2cm). The beam is loaded,
asked on July 26, 2013 
history
how did the migration to florida introduced new farming practices
asked on September 22, 2010 
Physics
How do I find tangential speed with just radius, time and angular acceleration?
asked on January 3, 2011 
maths
solve Z^5  1 =0 where Z is a complex number
asked on July 23, 2009 
math
Aaron own a shipping company. He plans to move into his new office which is near to the city centre. He needs some filing cabinets to organize his files. Cabinet x which costs RM100 per unit, requires 0.6 square meters of the floor space and can hold 0.8
asked on June 9, 2015 
math
Aaron own a shipping company. He plans to move into his new office which is near to the city centre. He needs some filing cabinets to organize his files. Cabinet x which costs RM100 per unit, requires 0.6 square meters of the floor space and can hold 0.8
asked on June 8, 2015

Physics
help
posted on March 30, 2019 
biology
NO
posted on November 24, 2018 
statistics
A) 0.79 B) 1.55
posted on October 26, 2016 
math
P(t)=1800cos((pie(n))/6 t)+1800
posted on June 8, 2015 
math
sTEVE I CANT UNDERSTAND
posted on June 8, 2015 
physics
F=m*((v^2)/r) Therefore (18.1^2m/s)/80m*3800=F Therefore F=15561N
posted on March 30, 2014 
Improving Your Writing
This is more a comment,I am also in this boat, its very confusing if your only responsibility is Ruth and Jack why with all the names of four other employees. Why would they give you so much info you really don't need, and want you to makeup part of the
posted on September 29, 2013 
MIT 2.01x
ww.imagehousing. com/imageupload.php?id=1149147
posted on July 26, 2013 
MIT 2.01x
here imagehousing. com /imageupload.php?id=1149147
posted on July 26, 2013 
MIT 2.01x
I put this Q2_1_1 Answer but the answer its wrong i put this t_0*(L/3) and the answer is wrong
posted on July 26, 2013 
Physics
My bad... I meant the angular acceleration  I was given rad/sec^2 as the units.
posted on January 3, 2011 
Physics
Can I just do that when my radius is in radians?
posted on January 3, 2011 
Physics
Er, wait. That is probably wrong. I think I have to go back and convert a few things around.
posted on December 16, 2010 
Physics
Oh, I had to find it in rev/min^2.
posted on December 16, 2010