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Determine the magnitude of the instantaneous acceleration of the object at time t2.
A diffraction grating is illuminated with light if wavelength 500nm. It produces the first minimum at 45 degree. Find the number of lines(slits) per mm of diffraction grating.
A hurricane is simply a steam engine which draws much of its destructive power from the evaporation and condensation of water. The heat of condensation of water is -2257 kJ/kg.
The freezing point and boiling points of Bromine (Br2) are -7.2°C and 58.8°C, respectively. Given that the heat of melting is +10.57 kJ/mol .
Combustion of 1.96g of a compound containing only hydrogen and carbon produced 6.35g of CO2 and 2.25g of H2O. The molecular weight of the unknown hydrocarbon was determined by mass spectroscopy to b
The position of a particle moving along an x axis is given by x = 13.0t^2 - 2.00t^3, where x is in meters and t is in seconds. Determine (a) the position, (b) the velocity, and (c) the acceleration
If the external source has an emf of +6.0 V and the electrolytic cell is 65 percent efficient, how much electrical power is expended to electroplate the bumper? (in kWh)
Two points A and B lie 20 cm apart on a line extending radially from a point charge Q. If the potential at A is 150 V and the potential at B is 120 V, find the charge Q and the distance of point A f
There is a line in my textbook-"Solids have a property ISOTROPY due to which they show different values of some physical quantities like refractive index when measured along different directions".
An object at distance s=20.0 cm from the lens has an image at distance s' from the lens. Is there a second lens with nred, nviolet, and R2 as stated above, but a different R1 so that s' due to viole
A solution of malonic acid, H2C3H2O4, was standarized by titration with 0.1000M NaOH. If 20.76mL of the NaOH solution were required to neutralize completely 13.15mL of malonic acid solution, what is
In testing a relative stabilities of Cu (II) species using a well plate, a student adds 6 drops of 1 M of NH3 to 6 drops of 0.1 M of Cu(NO3)2. He observes that a blue precipitate initially forms, bu
The atomic mass of gold is 197 g/mole, and the density of gold is 19.3 g/cm^3. Calculate the interatomic spring stiffness of gold.
A 27 pound meteorite struck a car, leaving a dent 25 cm deep in the trunk. If the meteorite struck the car with a speed of 450 m/s, what was the magnitude of its deceleration, assuming it to be cons
Determine the boiling point elevation of a solution of 133.0 mg of carvone (C10H14), oil of spearmint) dissolved in 1.500 g of carbon disulfide (kb=2.34 Celsius/m)
Suppose a volcano on another moon is observed to be ejecting material to a height of about 2.08 x 105 m. Given that the acceleration of gravity on this moon is 1.71 m/s2 find the initial velocity of t
Determine the melting point of an aqueous solution containing 147mg of saccharin (C7H5O3NS) added to 1.00mL of water (density of water + 1.00g/mL, Kf=1.86 Celsius/m)
A hot air balloon is rising upward with a constant speed of 20 m/s. When the balloon is 3 m above the ground, the balloonist accidentally drops a compass over the side. a.) How much time elapses bef
Caffeine the freezing point of a solution prepared by dissolving 150 x 10-3g of caffeine in 10.0g of camphor is lower by 3.07 than that of pure camphor (Kf=39.7 Celsius/m). What is the molar mass o
At the same time, Ted jumps upward with a speed of 3.5 m/s from a 1.0 m high diving board. Choosing the origin to be at the water's surface, and upward to be the positive x direction, write the x-ve
The entrance to a large lecture room consists of two side-by-side doors, one hinged on the left and the other hinged on the right. Each door is 0.700 m wide.
A "miracle" lotion, which is sold under the label of FixitAll, is a mixture containing both zinc oxide (ZnO) and iron oxide (form unspecified). A 1.4882 gram sample of the dried lotion was dissolved
What are the magnitude and direction of the force acting on the negative charge due to the three positive charges?
One mole of S2 gas is held at a pressure of 0.20 atm and a temperature of 800k. two moles of oxygen gas are held at a pressure of 0.40atm and a temperature of 400k. What is the difference in volume
The atomic mass of Neon is 20.2u, and that of krypton is 83.8u. The temperature of the krypton is 293K. What is the temperature of the neon?