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A physics demo launches a ball horizontally while dropping a second ball vertically at exactly the same time. Which ball hits the ground first? and why
Determine the position vector of any point on the line Y A, and hence find the position vector of the point X. Deduce that the shuttlecock cannot land in the shaded area of the court.
A rectangle has an area of 28.14 cm2. When both the length and width of the rectangle are increased by 1.80 cm, Calculate the length of the longer of the two sides of the initial rectangle
A small drop of water measuring 0.6 mm in diameter, how many extra electrons are on the drop of water
A spring with an unstrained length of 0.070 m and a spring constant of 2.4 N/m hangs vertically downward from the ceiling. What is the magnitude of the external electric field
A small piece of dust (mass=1.8 \(\mu\)\ g) travels horizontally through an electric air cleaner in which the electric field is 524 N/C. What is the charge on the dust particle
A sample of blood plasma occupies .550 dm3 at 0 degrees C and 1.03 bar, and is compressed isothermally by 0.57 per cent by being subjected to a constant external pressure of 95.2 bar. Calculate w.
An electron is accelerated by a constant electric field of magnitude 325 N/C. Find the acceleration of the electron
A gaseous compound containing carbon and hydrogen was analyzed and found to consist of 83.65% carbon by mass. What is the empirical formula of this compound
Consider the CVP graphs below for two providers operating in a fee-for-service environment and assuming the graphs are drawn to the same scale, which provider has the greater fixed costs? The greater
Two small metallic spheres, each of mass 0.20 g, are suspended as pendulums by light strings from a common point, what is the magnitude of the charge on each sphere
By what factor does the fraction of collisions with energy equal to or greater than activation energy of 100kJ/mol change if the temperature increases from 19.0 c to 50.0 c ? Give in scientific nota
Two electric dipoles with charges +Q, where Q = 5 mC, Find the magnitude of the electric force between the two dipoles.
which of the following terms would be used to describe the mechanism of the reaction of 4-methy-2-pentene with sulfuric acid and water as solvent to form pantanol
which molecular species listed would be necessary for the formation of pentanol from the reaction of 4-methyl-2-pentene with sulfuric acid and water as the solvent
You are given a container with 56 g of hydrogen atoms. What is the total charge on the electrons in the container
An electric eld of magnitude 3.5 kN/C is applied along the x axis. Calculate the electric flux through a rectangular plane 0.35 m wide and 0.7 m
For a 5.0 gram sample of each of the following, what weight of water will be lost if the sample is heated to constant weight: CoCl?*9H?O; CuSO?*5H?O; ZnSO?*4H?O; BaCl?*2H?O.
Flight to Mars. To send a satellite from Earth to Mars, a rocket must accelerate the satellite until it is in the correct elliptical orbit around the sun. What is the semimajor axis of the satellite
Consider uJT=(dT/dP)H. (this means the rate of change of Temperature divided by the rate of change of pressure at constant enthalpy)
A 5.0g- lead bullet is fired into a fence post. The initial speed of the bullet is 240m/s, How much does the bullets temperature increase
Given the following activation energies, what is the rate constatnt for a catalyzed and uncatalyzed decomposition of hydrogen peroxide(H2O2). Ea(uncatalyzed) 76kJ/mol, Ea(catalyzed) 19JkJ/mol
Four charged particles rest at the corners of a square of side a = 0.30 m. Determine the electric field at the position of particle 3 as well as the electric force on particle 3
A voltaic cell is constructed from a standard Mn2+|Mn half cell (Eored = -1.180V) and a standard Hg2+|Hg half cell (Eored = 0.855V).
A glass window 0.45cm thick measures 80cm by 37cm. To compare the relative efficiency of air and glass as insulators, calculate the heat flows through this window