I need help with this problem

I need help with this problem

a) you add them b) you subtract them

Need help solving problem

A fuel composed of (CH3)2N2H2 is mixed with N2O4. The two components react according to the following reaction (CH3)2N2H2+2N2O4=3N2+4H2O+2CO2(all gases). If...

Need help with formula for this type of problem

I believe these are the knowns: X- Vxi= 230cos40 (176.19), vxi = vxf, ax=0. Y- Vyi= 230sin40 (147.84) vyf= -147.84, ay= -9.8. I used the equations vyf=vyi + at, to find t. I used Δx=vxit...

The oxides of the Group 2A metals (symbolized by M) react with carbon dioxide in the following reaction MO(s)+CO2(g) = MCO3 A 2.85 g sample containing only MgO and...

Equal moles of sulfur dioxide gas and oxygen gas are mixed in a flexible reaction vessel and sparked to initiate the formation of sulfur trioxide. Assuming the reaction goes to completion, what is...

I need to determine the acceleration factor, do I need to find time first and use the equation a=(vf-vi)/t? Or can I just use the acceleration factor equation f=|a/g|

A ball is thrown horizontally off the roof of a building 50m tall. the ball is thrown with a velocity of 20m/s ? How far from the bottom of the building does the ball land ? &n...

Application: Merry-go-round. how fast can you spin the merry-go-round before the kids slip off? treat the merry-go-round as a flat disk w?out bars. (give answer in revolutions per second). note, this...

An electron is moving horizontally to the right with speed 4 multiply 106 m/s. What is the magnetic field due to this moving electron at the indicated locations in the figure? Each location is d =...

Consider two flasks, the first flask has 2.00L of hydrogen at a pressure of 475 torr, the second has 1.00 L of nitrogen at a pressure of 0.200 atm. If the stopcock between the two flasks is opened...

I feel like this should be easy and I'm making this harder than it should be. A baseball player throws a baseball into the air at a height of 3.00 m above the release point, the ball...

chemistery question

my school is keeping its annual battle of the sciences and I want to represent physics, we are supposed to make any item that helps the environment, any ideas on what i can make?

I know that I have to use Ohm's law combined with Kirchhoff's Voltage to set up the two loop equations and one node equation and to calculate the unknown currents I1, I2, and I3. The diagram and descriptions...

please solve

Two weights w1 & w2 are suspended from a massless pulley . The pulley is accelerated upwards with an acceleration of g .What is the tension in the axle suspension of the pulley??

revolutions per second.