Saturday

July 26, 2014

July 26, 2014

Total # Posts: 30

**pre calc**

find the equation of the left half of the parabola: (x+5)^2=4y+2

**trig**

A car drives 1000 feet on a road that is 8 degrees to the horizontal, as shown in the figure. The car weighs 3400 lb. Thus gravity acts straight down on the car with a constant force F=-3400j. Find the work done by the car in overcoming gravity?

**english**

c but not sure

**geometry**

ye has 44 feet of fencing to enclose a rectangular garden. She wants to to enclose as much area as possible. use trial and error to find maximur are faye can enclose with all 44 feet of fence. name the lencth and width that gives maximum area.

**math**

draw and label BN. Draw and label point T on it.

**math**

An eighth-grade student claims she can prove that subtraction of integers is commutative. She points out that if a and b are integers, then a-b = a+ -b. Since addition is commutative, so is subtraction. What is your response?

**Algebra**

A tourist bus leaves Richmond at 1:00 P.M. for New York City. Exactly 24 minutes later, a truck sets out in the same direction. The tourist bus moves at a steady 60km/h. The truck travels 80km/h. How long did it take the truck to overtake the bus.

**Algebra**

A car started out from Memphis toward Little Rock at the rate of 60km/h. A second car left from the same point 2 hours later and drove along the same route at 75km/h. How long did take the second car to overtake the first car.

**physics**

Assume the mass of the object remains constant. If the Kinetic Energy of an object changes by 1/3, by what factor has its speed changed?

**Physics**

Three charges are arranged in an equilateral triangle with sides of 4 cm. The coordinates and corresponding charge values are as follows: +4q at (-2,0); +2q at (2,0); -q at (0,3.464). The elementary charge of an electron is given by q = -1.602 x 10^-19 C. Determine the torque ...

**12th grade Biology**

metabolic reactions are catalyzed by enzymes that have multiple functions.

**9th grade**

What is the product of 23 and -27? -------------------------------------------------------------------------------- -621 -521 521 621

**health care**

Develop a unique proposal that describes a new health care system. Consider the current U.S. health care system’s strengths, weaknesses and challenges.

**trig**

write down the value (corect to three decimal places of:- a) sin64= b) tan21= c) cos67.4=

**Chemistry**

can the energy originally stored in gasoline be traced to rotating wheels?

**Chemistry**

can the energy originally stored in gasoline be traced to rotating wheels?

**Chemistry**

List 4 different ways in which the function of hemoglobin could be changed by a single amino acid substitution. i have no sweet clue... the question is very vague

**biochemistry**

List 4 different ways in which the function of hemoglobin could be changed by a single amino acid substitution. and i cant think of a single way because this question doesnt elaborate much further... can someone please help?

**analytical chemistry**

What is the pH at the equivalence point in a titration between 0.4450 F NH3 and 0.1520 F HCl?

**analytical chemistry**

and what would you do with the 500 mL dilution after everything?

**analytical chemistry**

wouldn't you do it a different way since the Na3PO4 is a salt?

**analytical chemistry**

What is the pH of a solution formed by mixing 14.35 mL of 0.200 F HCl with 0.322 g of Na3PO4, followed by dilution to 500.00 mL?

**physics**

n is normal force

**physics**

An airplane is doing a vertical loop in the air. The airplane goes at a velocity of 320 and at the top of the loop, n=500N. The pilot weighs 62kg. calc the radius of the loop vertical loop, given: v=320, n at the top=510N, m=62kg i dont know what eqn i use to find the radius o...

**physics**

An airplane is doing a vertical loop in the air. The airplane goes at a velocity of 320 and at the top of the loop, n=500N. The pilot weighs 62kg. calc the radius of the loop vertical loop, given: v=320, n at the top=510N, m=62kg i dont know what eqn i use to find the radius o...

**Physics**

ITS ALL OF THE ABOVE!

**Physics**

Consider a perfectly elastic collision between two objects of equal mass. Object 1 is initially moving with a velocity v = 4.33 m/s while object 2 is at rest. What are the final velocities after the collision? Enter the final velocity of object 1 first.

**physics**

i think friction is cool

**phyiscal Science**

How much force is needed to accelerate a 50-kg rider and her 250-kg motorcycle at 5 m/s2?

**World History**

what was the dust bowl

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