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Two blocks of weights 70.0 and 100.0 N are connected by as massless string and slide down an inclined plane making an angle of 42.0 deg. find the magnitude of the heavier block's acceleration
When the displacement in SHM is 0.2 the amplitude A, what fraction of the total energy is kinetic energy, What fraction of total energy is potential energy
Define how Pascal's law addresses the pressure in a fluid at different heights (or depths) before addressing the question and would you apply it in this case
A current of 0.80A flows through a copper wire 0.50mm in diameter, How long is the wire in km
Standard Spectrophotometry experiment. I have absorbance, path length (1) and I need to determine the concentration of an unknown based on my calibration cure. I need the Extinction Coefficient. Is
An object is coated with a layer of chromium that is 0.015 cm thick. If the object has a surface area of 15.3 cm squared, how many atoms of chromium are used in the coating. The density of chromium
Two forces act on a 100-kg block resting on the floor. The first force, pointing parallel to the floor, What is the magnitude of the net force on the block
If you stand on a bathroom scale, the spring inside the scale compresses 0.40mm, what does the scale read at its peak
The degree of unsaturation, or index of hydrogen deficiency, is the number of pi bonds plus rings in a molecule. Specify the degree of unsaturation (index of hydrogen deficiency) of the following form
In an experiment, 300 g of aluminum (with a specific heat of 900 J/kg·K) at 100°C is mixed with 54.0 g of water (4186 J/kg·K) at 20°C, What is the entropy change of the aluminum
The volume of an ideal gas is adiabatically reduced from a volume of 200 L to a volume of 74.3 L. How many moles are in the gas
Find the gauge pressure at a second point in the line 10.6m lower than the first if the pipe diameter at the second point is twice that at the first
Write the net ionic equation for a solution of calcium chloride and a solution of mercury(1) nitrate
A 100.0 kg box is pushed by a horizontal force F at constant speed up a frictionless ramp which makes an angle of 36.0 deg with the horizontal. Find the magnitude of the applied force
The solubility of slaked lime, Ca(OH)2, in water is 0.185 g/100 mL. What volume of 0.00300 M HCL is needed to neutralize 14.0 mL of saturated Ca(OH)2 solution
The temperature and pressure in a star's atmosphere are 6.40 multiply.gif 106 K and 0.0260 Pa. Calculate the rms speed of free electrons
A piece of wood is 0.600m long, 0.210m wide, and 0.08 m thick. Its density is 600kg/m3. find the mass of this volume of lead
"A plane, diving with constant speed at an angle of 54.0 degrees with the vertical, releases a projectile at an altitude of 770m. what is the speed of a aircraft
A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. What impulse did the athlete receive
Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen cyanide.
An ideal gas occupies a volume of 1.8 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container
If a temperature increase from 11.0degree C to 20.0degrees C doubles the rate constant for a reaction, what is the value of the activation barrier for the reaction
The rate constant (k) for a reaction was measured as a function of temperature. A plot of ln*k versus 1/T (in K) is linear and has a slope of -5355K . Calculate the activation energy for the reactio
A loaded ore car has a mass of 935 kg and rolls on rails with negligible friction. What maximum power must the winch motor provide
The activation energy of a reaction is 56.8kJ/mol and the frequency factor is 1.5*10^11/s. Calculate the rate constant of the reaction at 26degrees C