Recent content by Proleague

Homework Statement x^3/2(x+x5/2-x2) Homework Equations I don't know how to simplify this problem. I don't know any process either. The Attempt at a Solution

I forgot almost things. so, For 1 I just answered x>4 and x>-5 is it correct? and, I tried number2 using sin 2x = 2sin(x)cos(x) so, I just got 2cox=1 but, I don't know next step. Please help me out.

Homework Statement I totally forgot my basic pre-calculus stuff. So, please help me out to do this. Homework Equations Solve for x 1. (x-4)(x+5)>0 2. sin2x=sinx, 0<=x<=2x The Attempt at a Solution I tried number 1 it said x=4, x=-5 but it should be greater than 0. I just...

Homework Statement Using the data of Example 10-11, calculate the average speed of blood flow in the major arteries of the body, which have a total cross-sectional area of about 2.0cm2 Homework Equations well... Actually, I don't know how to solve this problem. The Example 10-11...

hmm... I don't know what you mean. Could you explain more easier to me? Well.. Actually, I don't know where should I put mass of the balloon. Could you write a equation exactly include mass of the balloon?

Homework Statement " A spherical balloon has a radius of 7.35 m and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 930 kg? Neglect the buoyant force on the cargo volume itself." Homework Equations So F(b) = (mass...

Homework Statement I don't know why everybody ignore my urgent questions. I do not know what to do seriously. What is the difference in blood pressure (mm-Hg) between the top of the head and bottom of the feet of a 1.60-m-tall person standing vertically? I know △p = pgh but in this...