Thursday
December 8, 2016

Total # Posts: 25

Physics
The system starts at rest. A mass of 20kg (m1) is connected to a pulley of uniform mass m=5kg and radius 10cm and a mass of 30kg (m2) hangs on the other side of the pulley hanging 2m above the ledge Find the tension of the strings I tried to find the acceleration by finding ...
September 21, 2016

Physics
At the beginning of a roller coaster ride the car is staionary at the top of a 30m high hill and then begins to fall. Neglect any resistive forces. Calculate the speed of the car when it reaches the top of the second hill on the roller coaster. The second hill has abheight of 12m
August 20, 2016

Science
A simple pendulum oscillates with an amplitude of 30 degrees. If the length of the string is 1.0m. Calculate the velocity of the pendulum bob at its lowest point.
August 20, 2016

The Giver
Kenxie you are a life saver!! I love u!!
May 22, 2015

math help me
Just did the quiz and here are the answers: 1.C 2.B 3.D 4.B 5.D 6.B 7.B 8.B 9.C 10.A
April 30, 2015

math help me
THHHXXXX? Are they right?
April 30, 2015

math help me
Hellloooooo is anyone there????
April 30, 2015

math help me
Here they are!!! B D A D B D B A C B
April 30, 2015

math help me
Solve: 6C3 (1 point) 120 720 20 240 2. Which is not a combination? (1 point) choosing 3 toppings for your pizza lining 3 students up in a row choosing 2 desserts from a tray of 10 choosing 5 students to represent a class of 30 3. How many ways can you choose 3 dishes from a ...
April 30, 2015

math comparing fractions
James says that 5/5 is greater than 9/10 is he correct
February 3, 2015

Math
A spinner with 10 equal sections, numbered 1 to 10, is spun. Then a coin is flipped. What is the probability that the spinner will land on 3 and the coin will land on heads?
June 16, 2014

physics
A car travelling 19.4m/s passes apolice car at rest.As it passes, the police car starts up, accelerating with a magnitude of 3.2m/s. Maintaining that acceleration, how long will it take the police car to catch up with the speeding motorist?
April 6, 2013

physics
A 1.2kg object is placed on a frictionless table and is attached to a hanging mass using a light string over a frictionless pulley in a fletcher's trolley arrangement. The 1.20kg object accelerates along the table at 2.31m/s while the hanging object accelerates down at the...
April 3, 2013

physics
A child accelerates upwards in an elevator which causes his apparent weight to become 405N. Determine the magnitude of the elevators acceleration if his normal weight is 400N.
March 29, 2013

English
At least do a little thinking. Tell us which answers you choose, and we will tell you if they are "right". If we spoonfeed them to you, it's cheating.
October 19, 2012

Trig
I hope this helps anyone. 11-7=4 36x4=144 42x4=168 Draw a triangle with an angle of 54 degrees. Then include the 54 degree angle in the 144 degree angle. Hope this makes sense. Angle 144 overlaps angle 54. 144-54=90 So the angle of the distance between the ships is 90. Then ...
September 24, 2012

Chemistry
Could NH4 ever be a gas?
May 19, 2011

physics
Im confused! How would you calculate the work done by a plane? I know work= f d, i just don't know how to get the force and distance!
November 30, 2010

Math
yep....
June 8, 2010

Math
A few here. 4x-8 ------ x(squared)-4 _________________________ 2m(squared)+5m-3 ------------------ m(squared)+4m+3 __________________________ 3x+4 ----- 12 (times) 8 ----- 9x+12 ________________________ x+5 ----- 16x (divided by) 3x-2 ----- 4x(squared) ____________________ 2-x...
June 8, 2010