Monday
September 1, 2014

Posts by Randall


Total # Posts: 22

Physics
So far, I have only come up with an equation where the velocity is defined as a = (V^2)/R aR = V^2 V = √(aR) Need help relating angle and mass to the resultant acceleration of radial and tangential acceleration.
July 30, 2014

Physics
A 3.0g bead has been threaded onto a vertical, frictionless, circular hoop with a 20cm radius. The bead is released from rest at 25º below the vertical. (a) Find the speed of the bead when it is 70° below the vertical. (b) Using the free-body diagram technique, find ...
July 30, 2014

Physics
An aluminum calorimetry cup [mc = 0.6 kg, cc = 0.22 kcal/(kgC)] is filled with water [mw = 2.4 kg, cw = 1 kcal/(kgC)]. It is at a temperature of 30C. A sample of an unknown substance with mass mm = 2.34 kg, originally at a temperature of 210C, is added. After a while, the ...
January 31, 2014

Physics
How much (in Celsius degrees) is the temperature of 1.3 kg of alcohol raised by adding 4.1 kcal of heat? The following piece of information may come in handy: specific heat of alcohol is 0.58 kcal/kgC.
January 17, 2014

Physics
An aluminum calorimetry cup [mc = 0.6 kg, cc = 0.22 kcal/(kgC)] is filled with water [mw = 2.4 kg, cw = 1 kcal/(kgC)]. It is at a temperature of 30C. A sample of an unknown substance with mass mm = 2.34 kg, originally at a temperature of 210C, is added. After a while, the ...
January 17, 2014

Physics
A weightlifter manages to lift a 133 kg (that's 293 pounds, which sounds much more impressive) weight a distance of 1.4 m. How many kcal of heat energy is equivalent to this lift?
January 17, 2014

Physics
I got 1, is that right?
January 17, 2014

Chemistry
A weightlifter manages to lift a 133 kg (that's 293 pounds, which sounds much more impressive) weight a distance of 1.4 m. How many kcal of heat energy is equivalent to this lift?
January 15, 2014

Physics
By what amount will a 178 m long concrete slab on the Mackinac Bridge contract when going from +39C to -35C? The linear expansion coefficient is 10^-5 per C.
January 15, 2014

physics
A car enters the freeway with a speed of 6.4 m/s and accelerates uniformly for 2.9 km in3.4 min. How fast is the car moving after this time? Answer in units of m/s
October 1, 2013

Organic Chem
The rh=Nrh dillute the mixture diyrate the miixture by boiling to 150-160 tepure feheight for 45 minutes crank the water high to dulite.'
April 16, 2012

Math-verify~
A parallelogram is defined by vectors OA=(4,3) and OB=(1,1). Determine the length of the diagonals OA+OB=(4,3)+(1,1) =(5,4) sqrt(5^2+4^2) =6.403 OA-OB=(3,2) sqrt(3^2+2^2)=3.60 Therefore the length of diagonals are 6.40 and 3.60 units.
March 27, 2012

Math
I have to solve the equation by finding the exact solution. Please Help. 1/4 log(x)-log(10000)=4
October 30, 2011

Math Homework
A car dealer carries out the following calculations. What is the annual percentage rate? (Round your answer to the nearest tenth.) List price $ 5,368.00 Options $ 1,625.00 Destination charges $ 200.00 Subtotal $ 7,193.00 Tax $ 431.58 Less trade-in $ 2,932.00 Amount to be ...
October 30, 2011

Cultural Anthropology
How has this social institution of Family affected the culture of "North America," of "Asia," and/or "Europe
October 24, 2010

PLEASE HELP Math
At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 24 knots and ship B is sailing north at 22 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per hour.)
March 15, 2009

11th grade
during what holiday did german and english soldiers observe an informal truce they shared their food buried theri dead and sang together
January 31, 2009

U.S.History
during what holiday did german and english soldiers observe an informal truce they shared their food buried their dead and sang together
January 31, 2009

U.S.History
during what holiday did german and english soldiers observe an informal turce
January 31, 2009

Critical Thinking
What are some example of prejudical rhetorical device and nonprejudical devices.
September 12, 2008

MATH
23.4
September 12, 2008

math fifth grade
this number is a factor of 48. this number is even. this number is a multiple of 6 the sum of the digitsof this number equals 3
September 23, 2007

Pages: 1

Search
Members