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When an underwater vehicle were to explore such a depth, then determine force which would the water apply on the vehicle's observation window (radius = 0.12 m)?
In sodium fluoride the mass ratio of sodium to fluorine is 1.21:1.A sample of sodium fluoride formed 27.6 g of sodium upon decomposition. Determine how much fluorine was formed?
When a commercial solar cell having a maximum output of 2 amps at 0.5v costs $30. Then determine the cost of a Photovoltaic System plant per peak kilowatt?
In order to raise the temperature 1.50 oC how much solar energy in kJ would have to be transferred to a 55.0 meter length of asphalt highway that is 15.0meter wide and 20.4 centimeters?
The objects volume is calculated by displacement of water in a100mL measuring cylinder and an unknown object has a mass of 38.533g. Before the object is immersed the volume reading is 52.4mL, and af
A 2 cm wide and .015 mm thick thin ribbon of a silver alloy carries a current of 6.98 A perpendicular to the magnetic field. The hall voltage is found to be 1.24 *10^-4 V if the magnetic field is 2.
When the solar cells employ have an efficiency of 10%, what area of land is required to generate an output of 1000 MW? Suppose that the mean isolation is around 500 W/m^2.
To find the mass of a metal object to be 27.02 g, a student used a triple beam balance (accurate to 0.01g) and then used a 50mLgraduated cylinder to calculate the volume of the object was 19mL.
Let the equation \((x-2)^2 + (y-1)^2 =9\). Determine the raduis of circle. Compute two points on circle wose x coordinate is equal to 2.
At 119.0 (centigrade's) to water at the 39.0 How much heat in kJ must be removed in order to change 3.36 moles of steam .The specific heat capacity of water vapor is 2.01 J g-1 oC-1
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 3.50 cm into the river. What is the weight of the truck?
Determine the total work done, the total heat transfer as well as enthalpy changes and the internal energy for the process.
A commercially accessible solar cell module puts out 3Volts and 0.1 amp, and measures 5cm by 8cm. Determine how large an array is required to give an output of 40 W?
Determine how many square meters of PV would it take to give 1 kW for a world population of 6 billion? If such cells were crystalline silicon of 200 microns thick (200*10^-6), determine the minimum
Torque is calculated in foot-pounds where the pounds means pounds of force that the force exerted by 1 pound under normal gravitational acceleration. Calculate what the SI units of torque are, and
Fire watcher spots same fire at N52 °'E from his position 4.5 miles south of ranger. How far is fire from closer of two observers?
When given a substance (like CCl4 orI2), Calculate the easiest way to conclude if the substance has London dispersion intermolecular forces?
Compute the absolute pressure at the bottom of a fresh-water lake at a depth of 32.1 m. Suppose the density of the water is around 1.00 x 103 kg/m3 and the air above is at a pressure of 101.3 kPa.
The average molecular weight of a nucleotide pair is 660 g/mol and each nucleotide pair contributes 0.34 nm to the length of DNA. The molecular weight of an E coli DNA molecule is about 3.1 X109&nbs
Wavelength of the sound wave in a room is 1.13 m and the frequency is around 301 Hz. Find out the speed of the wave in the room?
Calculate the pH at the half-equivalence point where a solution having an unknown concentration of benzoic acid (Ka= 6.5x 10-5) is titrated using a standardized solution of sodium hydroxide.
Standing at the top of the 150-foot cliff, angle of depression to the ship off shore is 14 degree. How far is ship from foot of cliff?
Blood pressure is equivalent to the pressure under mercury of a particular depth and it is measured in millimeters of mercury. For example, a systolic pressure of 160 is actually equal to the pressu
Recognize the acid and the number of equivalents per mole and do the same for the base. Balance the following acid-base neutralization reaction. FeCl3 (Ferric chloride) reacts with NaHCO3(sodium bi
Find out, how much work should the father do to pull the sled 0.2 km all along the slope? If he does this 5 times in an hour, determine his average power output?