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If an E-class model rocket motor provides 10 N of thrust (force) for three seconds and is installed in a model rocket weighing 100 grams (including the weight of the motor), what is the acceleration of the rocket due to the motor? What is the acceleration (downward) of the rocket due to gravity? Assume the acceleration due to the engine is straight up and the acceleration due to gravity is straight down. What is the net acceleration of the rocket? How fast is the rocket moving when the motor burns out 3 seconds after ignition?
Combustion analysis of an unknown compound containing only carbon and hydrogen produced 1.1385 g of CO2 and 0.5805 g of H2O. What is the empirical formula of the compound?
Cesium chloride crystallizes in a cubic unit cell with Cl- ions at the corners and a Cs ion in the center. 1. Count the numbers of positive and negative charges
What is the de Broglie wavelength of a 11.5 g hummingbird flying at 109 mph?
A process requires two distillation columns. The first column is fed a solution containing 21 % component A, 31 % component B, the rest component C.
Which weak acid would be best to use when preparing a buffer solution with a pH of 9.70? An acid with Ka = 3.2 × 10^-5 An acid with Ka = 4.0 × 10^-7 An acid with Ka = 1.3 × 10^-11 An acid with Ka = 2.1 × 10^-10
A collapsing star is estimated to have a mass of 1.0 x 1024 kg and a volume of 4.35m^3. Compute the density of the star in grams per milliliter.
An 11 liter tank is filled with 80 moles of air at at pressure of 203 bar. What is the temperature of the air in the tank in degrees Celsius
Explain why do you see distinct lines when metal salts are burned however see a continuous spectrum when observing sunlight or light from an overhead projector
Explain how does doubling the preliminary concentration of iodine, while keeping all others constant, affect the initial rate
write a balanced half-reaction describing the reduction of gaseous dioxygen to aqueous oxide
How much heat is needed to melt 22.4g of ice at zero degrees celcius to form liquid water at zero degress celcius?
At 1 atm, how much energy is required to heat 63.0 g of H2O(s) at -24.0 °C to H2O(g) at 143.0 °C
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