Saturday

April 18, 2015

April 18, 2015

Total # Posts: 19

**physics**

One end of a piano wire is wrapped around a cylindrical tuning peg and the other end is fixed in place. The tuning peg is turned so as to stretch the wire. The piano wire is made from steel (Y = 2.0x1011 N/m2). It has a radius of 0.51 mm and an unstrained length of 0.65 m. The...
*March 24, 2015*

**Physics**

At what speed must I travel, in kms, if i need to travel 22.6 kms in 18 minutes?
*January 25, 2015*

**Algebra**

An isotope has a half-life of 97 years. how much of a 19-gram sample is left after 150 years?
*November 13, 2014*

**phisics**

what is the heat capacity of a gold ring that has a mass of 5.00g?
*April 4, 2012*

**Physics**

P1 -P2 = .5* (v1^2-v2^2) difference in pressure multiplied by area
*December 8, 2011*

**calculus iii**

What heading (or direction) and airspeed (speed in still air) are required for an airplane to fly 837 mph due north if a wind of 63 mph is blowing in the direction of S 11.5 degrees E?
*May 23, 2011*

**calculus III**

What heading (or direction) and airspeed (speed in still air) are required for an airplane to fly 837 mph due north if a wind of 63 mph is blowing in the direction of S 11.5 degrees E?
*May 22, 2011*

**Math**

Name a real life object that could be represented by a net . 1. Cone 2. Cylinder 3. Rectangular prism For a cone I think a ice cream cone
*March 7, 2011*

**Math**

He needs to make a large circular wooden clock that measures about 6 feet in circumference. Write an equation he can use to find r the radius of the clock
*December 14, 2010*

**MATH**

Bob needs to cut a piece of glass for her table. The table is in the shape of a regular hexagon. The glass measure 1 1/2 feet on each side. What is the perimeter of the piece of glass?
*December 14, 2010*

**Math**

(x,y) --> ( x-6, y - 3)
*December 12, 2010*

**Math**

Write a description of each rule (x,y) --> (x + 5, y -2)
*December 12, 2010*

**Math**

13/52 * 12/51. W/o replacement means the second king would have l less in both the numerator and denominator so multiply the 2 results.
*December 7, 2010*

**algebra**

the three angles of a triangle are 3x,x+10, and 2x-40. Find the size of the smallest angle in a triangle
*October 26, 2010*

**college physics**

Two blocks each of mass m = 4.10 kg are fastened to the top of an elevator as in the figure below. (a) If the elevator accelerates upward at 1.6 m/s2, find the tensions T1 and T2 in the upper and lower strings. (b) If the strings can withstand a maximum tension of 96.0 N, what...
*September 21, 2010*

**Science!**

How is the structure of an alpha-helix maintained?
*February 17, 2008*

**Math**

The two back legs of the directors chair meet in a 72 degree angle. Find the measure of each angle formed by the two back legs.
*October 9, 2007*

**algebra**

Can someone please help me with this math problem? Thanks. Let g(x)=x^2-5 and h(x)=3x+2. Perform the function operation. -2g(x)+h(x) That would be -2x^2 +10 + 3x +2 = -2x^2 + 3x +12. oh, thanks! I understand. I have another problem I'm unsure of. g(x)*h(x) I got 9x^2+12x-1...
*March 20, 2007*

**algebra**

How do I tell if (x-4)/-3=y is a function? thanks It tells you wnat y is in terms of x. It is therefore a fucntion.
*March 19, 2007*

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