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A 52dB sound wave strikes an eardrum whose area is 5.0×10?5m^2. How much energy is received by the eardrum per second
if I have .42N NaOH and the stoiometry between Oxalic acid and Naoh is 1:2 then does that mean i do .42/.5=mol Oxalic acid * vol of titrations = molarity of oxalic acid
A square loop of wire has sides of length 3 cm. A magnetic field points out of the screen; its magnitude is B = 3.0t2y, What is the emf around the square at t = 2.00 s
What is the electric field strength between the disks? A proton is shot from the negative disk toward the positive disk. What launch speed must the proton have
A helicopter rises vertically with a constant upward acceleration of 0.38 m/s^2. How soon does the wrench hit the ground
Can someone explain how to do these? I feel like the first one is E as KOH and HCL are strong base/strong acid.
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. what is the magnitude of the average current in this region
of 3M sodium acetate and water would you use to make 10ml of a 0.25M solution of sodium acetate? Show the calculations.
On vacation, your 1350 kg car pulls a 540 kg trailer away from a stop light with an acceleration of 2.15 m/s2. What force does the trailer exert on the car
Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of +10q. Sphere B carries a charge of -7q. Sphere C carries no net charge. How much charge ends up on sphere C
If 0.140mol of a nonvolatile nonelectrolyte are dissolved in 3.30mol of water, what is the vapor pressure PH2O of the resulting solution? The vapor pressure of pure water is 23.8 torr at 25 °C
For a solution containing 0.0060 M calcium nitrate and 0.057 M nitric acid, calculate the activity of the calcium ion.
An x-ray tube accelerates electrons from rest at 5.0×10 14th m/s(squared) power through a distance of 20cm. Find the acceleration time
What is the maximum amount of CO2 (44.0095 g/mol) which could be formed from 16.42 g of CO (28.0101 g/mol) and 0.24 mol of O2 (31.9988 g/mol)? Answer in units of mol
Calculate the change in entropy when 54 ml of hot (95 C) water is added to 90 ml of cold (5 C) water is a closed cup, given that Cp (H2O, l) = 75.5 J/molK
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. calculate How fast are the waves traveling
Enter the symbol of a sodium ion, Na+, followed by the formula of a sulfate ion, SO42-
The Achilles tendon inserts on the calcaneus at a distance of 8cm from the axis of the ankle joint. What torque is created by these muscles about the ankle joint
A car travels a straight road at 130 km/h for 30min then at 50 km/h for 10min. What is the average speed for the entire trip
Explain at least one personal benefit that the individual derives from completing a high- quality thesis or dissertation. Then explain at least one societal benefit that follows from the individu
Enthalpy of combustion of ethanol(g) is -1371 kJ/mol. Temperature and pressure of intake mixture is 25 oC and 1 bar, respectively. Assume ideal behavior of diatomic gas and ignore the changes in the
Mental disorder that intrigues you the most, then suggest a treatment approach for the disorder you selected based on evidence discussed in the textbook related to the treatment of mental disorde
Two large equipotent surfaces are flat and parallel and separated by a relatively small distance compared to their size. What is the direction of the electric field midway between the surfaces
Select a topic for your term paper and submit it for instructor's approval. Due by the end of this module. See below to learn more about your term paper. Your proposal must include: 1) a one par
If electrons are accelerated from rest in an electron gun by sending them through a potential difference of 11.0 kV