Recent content by silentsaber

Homework Statement taking the derivative of this:(2x+1)^3(3-x)^2 Answer Choices a.) 2(2x+1)^2(3-x)(x-10) b.) -2(2x+1)^2(3-x)(x-10) c.) 2(2x+1)^2(3-x)(5x-3) d.) -2(2x+1)^2(3-x)(5x-8) e.) -12(2x+1)^2(3-x) Homework Equations Product rule and chain rule The Attempt at a...

Homework Statement 2.3(1.2)^5z = 3(4.1)^z solve for z Homework Equations the properties of logarithm The Attempt at a Solution okay I first divided the 3 with 2.3 and got 1.304 then i brough the 5z and the z down which gives me 5z log(1.2)=1.304 z log(4.1) then i plugged log of 1.2...

Homework Statement The position of an object is given by r(t) = 4 cos(3t) i + 4 sin(3t) j (where distance is in meters and time is in seconds). What is the magnitude of the object’s acceleration at any given point in time? Homework Equations v=x/t a=v/t The Attempt at a Solution...

Homework Statement 1.)A mass is on a frictionless horizontal surface and attached to a horizontal spring of spring constant 200 N/m. If the mass is released from rest when the spring is compressed by 10 cm, what will its kinetic energy be when the spring is stretched by 7 cm? 2)A child...

thankyou guys very much i totally forgot the dot product existed XD

Homework Statement A force F = (2.7i + 3.2j) N is acting on a particle while it travels from the point (x, y) = (1, -1) m to the point (2, 1) m. Find the work done by the force F on the particle. Homework Equations W=FD and A=SqRt of Ax^2+Ay^2 The Attempt at a Solution ok i used the...

omg THANX!

would the acceleration then be 2.094rps? not sure what to do about the bottom second because i tried inputting that and got it wrong as well =/

HI, i have three problems that i have tried but failed here they are Homework Statement SOLVED 1.) A wheel turns through 4 revolutions while being accelerated from rest at 20rpm/s. a)find the final angular speed b) find the time it takes to turn 4 revolutions 2.) A potter's wheel is...