Friday

April 18, 2014

April 18, 2014

Total # Posts: 21

**Physics**

1. How much work must be done to stop a 1750 kg truck traveling at 110.0 km/h?

**Math **

The angle of elevation of the sun is 22 degrees. How long is the shadow of a 15m tree, to the nearest metre?

**Math (Trig)**

Find the indicated ratios in the triangle. Right triangle with a height of 2.56cm length of 4.65cm and hypotenuse of 5.31cm a. tan A b. cos C c. sin C How do I figure this out?

**HELP PLEASE!!!!!**

his horses name is Tuesday.

**math**

8 girls If there are 20 children and for every 3 boys there is 2 girls that's 5 children. 5x4 = 20 so in every 5 kids there is 2 girls. So then do 4x2 = 8

**Math (intergrated algebra)**

769.69 cubic inches You can solve this by doing Radius x radius x height x pi 7 x 7 x 5 x 3.14159

**Math Trig**

I have to find the x (bottom length of the triangle) in a right triangle. angle A is 33.9 degrees angle B is 90 degrees and the height of the triangle is 3.3cm What formula do I use to figure out this question?

**Math**

Square cushion measures 65 cm by 65cm and 10 cm thick. I got help of the measurements from 1:20 scale to 3.25 by 3.25 by .5cm I drew out and labeled them. I need help with the next step. The square cushion is made of 3 component parts a top bottom and sides. Draw the cushions ...

**math**

Square cushion measures 65 cm by 65cm and 10 cm thick. I got help of the measurements from 1:20 scale to 3.25 by 3.25 by .5cm I drew out and labeled them. I need help with the next step. The square cushion is made of 3 component parts a top bottom and sides. Draw the cushions ...

**Math**

thank you

**Math**

A square cushion measures 65 cm by 65 cm and 10 cm thick. Using a scale of 1:20 draw views of the cushion and label them with their measurements. Can someone help me with this? How would I go about drawing them and using the scale for measurements?

**Math**

3(-2/3 + 4/9) The 2/3 and 4/9 are fractions. How do I figure this out?

**Physics**

The average emf induced in the secondary coil is 0.12 V when the current in the primary coil changes from 3.8 to 1.1 A in 0.14 s. What is the mutual inductance of the coils?

**calculus ab**

What is the integral of sin4xcos4x dx?

**chemistry**

The following cell was observed to have an emf of 2.25 volts at 25.0oC : Zn(s) | Zn2+(aq, 0.143 M) || Cl2(g, 0.548 atm) | Cl-(aq, ?M) | Pt(s) . Use tables of standard reduction potentials in Petrucci to calculate the concentration of chloride ion in the cathode compartment, [C...

**chemistry**

A voltaic cell at 25oC consists of Mn/Mn2+ and Cd/Cd2+ half-cells with the initial concentrations [Mn2+] = 0.100 M and [Cd2+] = 0.0100 M. Use the Nernst equation to calculate E for this cell. Cd+2(aq) + 2e- = Cd(s) . . . . . . Eo = -0.40 V Mn+2(aq) + 2e- = Mn(s) . . . . . . . ...

**physics**

A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.4 x 10^5 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 5.0 x 10^7 J at lift-off. Wha...

**physics**

A rocket is used to place a synchronous satellite in orbit about the earth. What is the speed of the satellite in orbit?

**physics**

A wrecking ball is hanging at rest from a crane when suddenly the cable breaks. The time it takes for the ball to fall halfway is 1.6 seconds. Find the time it takes for the ball to fall from rest all the way to the ground.

**Math(Geometry)**

I just staarted Geometry this year and i was stuck on those same questions... thanks to the ppl who post ansewers... it was a BIG help... :)

**Algebra 2**

How do I write equations for geometric sequences? example question: 1, 3/2, 9/4, 27/8 an= a(n-1) * r^n where r is the value of dividing one term by the term before. For instance, in the above, ao= 1, r= a3/a2= (27/8)/(9/4)= 3/2 a1= 1*3/2 a3= 1*(3/2)^3= 27/8 Thank you, Mr. Pursley

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