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Determine the numbers of calories are needed to warm the 20.4 g of water from 80°C to 100.0°C and convert it to steam at 100.0°C? The heat of vaporization of water is 540. cal/g.
When the ball is caught at the similar height at which it left the quarterback's hand, determine how many revolutions has the ball made while in the air?
The storage tank for propane gas is to be made in shape of the right circular cylinder of altitude 20 ft with the hemisphere attached to each end. Find radius x so that resulting volume is 49.5(pi)f
You have probably never noticed time dilation effects in daily life. Do some computations to see why this is. (i) Compute the speed that a friend would encompass to move with respect to you so that
A ray of light is incident on the still water (n = 1.3333) of a swimming pool. When the angle this ray makes with the normal is the polarizing (Brewster’s) angle, determine the angle with resp
How does the density of the object compare with the water and with the brine solution? Explain. An object floats in a7% solution of NaCl but sinks in the distilled water.
You are called on by the indignant captain to describe the discrepancy, who maintains that her lights are totally compliant with code. What spacecraft speed will exhibit both the captain and policem
If a radioactive element has a half-life of 24 days, determine the rate constant and how long will it take for 1.5 x 10e21 atoms of the element to decay down to 2.7 x 10e19 atoms. Radioactive decay
The scientist has limited temperature T (in degrees Celsius) during the 24-hour period. If t denotes time in hours and t=0 corresponds to midnight, determine fourth degree polynomial that fits infor
A fly-wheel is a solid disk which rotates around an axis which is perpendicular to the disk at its center. Rotating flywheels give a means for storing energy in the form of rotational kinetic energy
A sample which is having 5.00 mL of seawater that had a density of 1.0116 g/mL was titrated with0.0998 M AgNO3 solution using K2CrO4 to indicate the end point. If 26.35 mL of 0.0998 M
A beam of un-polarized light of intensity 28.0 W/m2 passes via a polarizing sheet. Determine the electric field amplitude of the transmitted beam?
The polynomial f(x) with real coefficients and leading coefficient 1 has zero 8+5i and degree 2. State f(x) as the quadratic polynomial with real coefficients which are irreducible over (real number
If the temperature is reduced to -80C and the pressure increased to 760mmHg, discuss what volume will 300 ml of gas at the 20 C and a pressure of 355 mmHg occupy?
(i) Determine the radiation pressure which a 250 W light bulb emitting light with the efficiency of 15% applies on a small matte-black surface at a distance of 0.900 m? (ii) Determine the pressure i
The Sun attracts the Earth by pulling on it with the gravity. Determine the force applied by the gravity of Sun on the planet Earth?
A12.3849 -g sample of iodine is accidentally contaminated with1.00070 g of ^129 I, naturally occurring iodine has an atomic mass of 126.9045, a synthetic radioisotope of iodine used in the treatment
The number of bacteria in the certain population increases according to exponential growth model, with the growth rate of 3.5 % per hour. How many hours it takes for size of sample to double?
(i) Determine the electric field energy density at P? (ii) A parallel-plate capacitor whose plates consist of area 0.108 m2 has a uniform electric field among its plates with the similar energy dens
If the H-H and H-F bond energies are 432 and 565 kJ/mol, respectively, calculate the F-F bond energy? The reaction of H2 with F2 produces HF with ΔH = -269 kJ/mol of HF.
A layer of ice having parallel sides floats on the water. When light is incident on the upper surface of the ice at an angle of incidence of 36.0°, determine the angle of refraction in the water
The discovery of polyatomic organic molecules such as Cyanamid, H2NCN, in interstellar space has led some scientists to believe that the molecules from which life began on Earth may have come from s
Compute the pressure in the eye of the hurricane when the pressure close to the edge is around one atmosphere.
A 0.1743g sample of impure oxalic acid is required and 39.8 mL of 0.08915 M NaOH solution for complete neutralization. Oxalic acid (COOH)2 is used to remove the rust stains and some ink stains f
Find out the maximum depth to which can submerge the submarine. (Suppose that the layer of ice is thin adequate not to apply any pressure on the surface of Europe’s ocean.)