Total # Posts: 54
Rafi is upgrading his cell phone and monthly service plan.Triax Cell offers a new phone for $50 and unlimited service for a monthly fee of $40.CellUR offers a new phone and unlimited service for a monthly fee of $50. After how many months will the cost of the two phones and ...
February 18, 2015
It costs $12.50 to see a movie at a theater near Jason's house. It costs only 1.95 to rent a DVD from an online service. A DVD player costs $125. To the nearest whole number, how many movies must Jason watch on DVD instead of at the theater before he recovers the cost of ...
February 17, 2015
a ball A collides elastically with another ball B initially at rest. A is moving with a velocity of 10m/s at an angle 60' from the line joining the center. select the correct alternative: a)velocity of ball A after collision is 5 m/s b)velocity of ball B after collision is...
August 23, 2014
ich muss ein referat auf englisch machen. ich paar fragen: different knd of animal,where it lives,what it eats,whenit sleeps,what it does,what is special about it,pictures,where it sleeps. bitte schreibt mir die internet seite? NICHT vergessen es muss auf englisch und es muss ...
December 24, 2013
hallo,ich brauche hilfe beim projekt. ich muss reisekataloge über islas canarias -spaniens insel im atlantik recherchieren. könnt ihr mir helfen und schreib auch die internet adresse wo ihr es herraus gefunden hat danke schön
October 12, 2013
bitte erkläre mir die wörter: eigenartige weisen schürzte seie kleider allerlei ausflüchten schwarm die Kunde Ungesäumt spielmann senkung eines hügels danke! ps: schreibe mir eine schnelle antwort!!!
March 24, 2013
on july 01,2000, asok ltd. purchased a machine for Rs.1,08,000 and spent Rs.12000 on its installation.At the time of purchase it was estimated that the effective commercial life of the machine will be 12 years and after 12 years its salvage value will be Rs.12,000.prepare ...
October 26, 2012
aufgabe 1.rechne für die folgenden massstäbe aus,welche Länge fünf zentimeter auf der wirklichkeit haben. massstab 1--1000000-- massstab 1--40000000,massstab1--50000--massstab--10000-- massstab 1--500000
October 22, 2012
Four people sit in a car. The masses of the people are 41 kg, 47 kg, 53 kg, and 55 kg. The car's mass is 1020 kg. When the car drives over a bump, its springs cause an oscillation with a frequency of 1.00 Hz. What would the frequency be if only the 41-kg person were ...
March 30, 2012
A spoked wheel with a radius of 44.0 cm and a mass of 1.90 kg is mounted horizontally on frictionless bearings. JiaJun puts his 0.550-kg guinea pig on the outer edge of the wheel. The guinea pig begins to run along the edge of the wheel with a speed of 18.0 cm/s with respect ...
March 28, 2012
Sorry ignore what I said here before...the ball is at the top and it slides to the right then it goes up a little which makes a curve which is distance R and the distance it slides from top to botton is H...hope you have an idea now!
March 28, 2012
A bucket of water with a mass of 4.0 kg is attached to a rope that is wound around a cylinder. The cylinder has a mass of 8.0 kg and is mounted horizontally on frictionless bearings. The bucket is released from rest. (a) Find its speed after it has fallen through a distance of...
March 25, 2012
Belinda needs to find the center of mass of a sculpture she has made so that it will hang in a gallery correctly. The sculpture is all in one plane and consists of various shaped uniform objects with masses and sizes as shown. The length of the rectangle is L = 1.4 m and the ...
March 18, 2012
A 44.0-kg woman stands at one end of a 148 kg raft that is 6 m long. The other end of the raft is 0.5 m from a pier. (a) The woman walks toward the pier until she gets to the other end of the raft and stops there. Now what is the distance between the raft and the pier? in m ...
March 18, 2012
In the railroad freight yard, an empty freight car of mass m rolls along a straight level track at 1.1 m/s and collides with an initially stationary, fully loaded boxcar of mass 4.3m. The two cars couple together upon collision. (a) What is the speed of the two cars after the ...
March 16, 2012
A pole-vaulter of mass 59.9 kg vaults to a height of 5.9 m before dropping to thick padding placed below to cushion her fall. (a) Find the speed with which she lands. m/s (b) If the padding brings her to a stop in a time of 0.48 s, what is the average force on her body due to ...
March 16, 2012
Aqueous sodium bicarbonate was used to wash the crude n-butyl bromide. What was the purpose of this wash? Give equations. Why would it be undesirable to wash the crude halide with aqueous sodium hydroxide?
December 1, 2009