Average acceleration of the driver during the collision
A car traveling 85 km/hr strikes a tree. the front end of the car compresses and the driver comes to a rest after traveling 0.80m. What was the average acceleration of the driver during the collision?
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A common laboratory reaction is the neutralization of an acid with a base. When 60.0 mL of 0.25 M nitric at 24.5 degree C is added to 60.0 mL of 0.275 M NaOH at 24.5 degree C in a coffee cup calorimeter, the temperature of the mixture rises to 30.
Aluminum Oxide (Al2O3) has a surface energy of 1 J/m2, estimate the maximum amount of energy (J/g) that is available for densification for spherical particles with a diameter of 1 micron.
An 8.1g bullet is fired with a velocity of 109m/s into a 98g block of wood at rest on a frictionless surface. The bullet lodges in the block and they slide off together. What is the final velocity of the bullet-block?
In 1945 1,100 adult Americans were asked if they abstain from alcoholic beverages and 363 indicated that they were total abstainers. A recent pole asked 1,100 adult Americans if they abstain from alcoholic beverages,
Steam enters an adiabatic turbine steadily at 3 MPa and 400 deg C and leaves at 70 kPa and 100 deg C. if the power output of the turbine is 2 MW (mega watt), determine the isentropic efficiency of the turbine?
When a sample of a simple hydrocarbon,CxHy, is burned in oxygen 0.300 g ofCO2 and 0.123 g of H2O are isolated. Themolecular weight of the compound was determined to be 70.1 g in aseparate experiment.
An Angry Basketball player throws the ball straight down to the floor. If the ball bounces straight up and returns to the floor 2.5 seconds after first striking it what was the balls greatest height above the floor?
When 12.3 g of an unknown, non-volatile, non-electrolyte, X was dissolved in 100. g of methanol, the vapor pressure of the solvent decreased from 122.7 torr to 118.6 torr at 298 K. Calculate the molar mass of the solute, X.
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