# Posts by Tarra

Total # Posts: 14

math
304.1

math
If an airplane travels at 300 mph with no air resistance, and it travels directly south with a wind of 50 mph east, how fast is the plane going?

Physics
A mass and spring are arranged on a horizontal, frictionless table as shown in the figure below. The spring constant is k = 480 N/m, and the mass is 4.8 kg. The block is pushed against the spring so that the spring is compressed an amount 0.31 m, and then it is released. Find ...

Physics
A truck of mass 7520 kg is traveling along a level road at an initial speed of 32.9 m/s and then slows to a final speed of 17.9 m/s. Find the total work done on the truck.

Physics
A ball is thrown straight up and rises to a maximum height of 20 m above the ground. At what height is the speed of the ball equal to half of its initial value? Assume that the ball starts at a height of 2.1 m above the ground.

Chemistry
A student mixed 75.0 mL of water containing 0.75 mol HCI at 25* C with 75.0 mL of water containing 0.75 mol of NaOH at 25*C in a foam cup calorimeter. The temperature of the resulting solution increased to 35*C. How much heat in kilojoules was released by this reaction? C (...

Math
Your body consists of 7/10 water. Is more than 1/2 your body water? Explain

chemistry
hi Dr Bob..can you please help me with this chemistry problem? I got problem dealing with the chemical formula.How i want to find the number of moles of 2g of Fe(NH4)2(SO4)2.6H2O???please help me.Thank you

math
Did i do these problems correctly? 1. 39*(-43)= -1677 I multiply 39 and -43 and the answer was -1677 2. Find absolute value of |-7| and the answer is 7. It is the opposite of what it is. 3. Add. -24 + (-17) The answer is -41. They both are negative so you just add them ...

math
If you have a grade average at 50% and you score 89% percent on a test what does your grade equal out to?

english
please could someone tell whether the film miss congeniality was a book. If not can you think of a film that was a book, which had a character similar to gracie hart either as the fbi agent or as miss new jersey. many thanks

english
what are the themes in act 2 scene 2 of macbeth

math
I take it you go to Phoenix or Axia eh?

Chemistry to DrBob
hi DrBob..i got confused dealing with this chemical formula.how i want to find the num of moles of 2g of Fe(NH4)2(SO4)2.6H2O??? Can you help me.