Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
In a laboratory experiment, two engineering students are asked to determine the caloric value of a commercial brand of diet cocoa. They are provided with a bomb calorimeter, which had to be calibrated by measuring the heat liberated by a substance with a known heat of combustion. They elect to use benzoic acid, which has a known heat of combustion of 6.318 kcal/g. The test consists of igniting a tablet of the test material inside the bomb and measuring the temperature rise of the surrounding water.
The energy equivalent (EQ) of a bomb calorimeter is defined to be the product of the mass of the system multiplied by its specific heat. Then, the relation between the heat liberated by a test sample and the measured temperature change of the water is Q = EQ(Tfinal -Tinitial).
a. If the change in temperature of the water was 2.905°C when a 1.1523 g tablet of benzoic acid is tested, determine the energy equivalent of the calorimeter.
b. Then, a 1.0825-g tablet of diet cocoa is tested and produces a temperature change of 1.699°C. Using the results of part a, determine the caloric energy content of the cocoa in kilocalories per gram.
A passenger car traveling down a rough road bounces up and down at 1.3 Hz with a maximum vertical acceleration of 0.20 m/s^2, What is the maximum speed of the oscillation
If a rock is attached to a massless, rigid rod and swung in avertical circle at constant speed, it will not have a constanttotal energy. Does the rod exert a tangential force on the rock
A suspension bridge is 62.0 m above the level base of a gorge. A stone is thrown or dropped from the bridge. If you throw the stone straight down with a speed of 25.0 m/s, how long before it hits the ground
A home (volume = 1000 m3) built in 1946 has urea formaldehyde insulation, which outgases into the home at a rate of 5 ng/hr, What is the steady state concentration (C) of formaldehyde in the home
A 0.20kg object is attached to a spring with spring constant k=10n/m and moves with a simple harmonic motion over a horizontal frictionless surface. At the instant it is displaced from equilibrium by -0.050m, what is it's acceleration.
A barge is 10 m wide and 60 m long and has vertical sides. The bottom of the boat is 1.2 m below the water surface. What is the weight of the barge and its cargo
Find the ratio of the fractional decrease in mass of the nuclear fuel to the fractional decrease in mass of gasoline when each is burned.
Consider an airplane flying at Mach 4 at 70,000 feet. A shock is formed due to supersonic flow. Find the total pressure at the nose using 3 approaches
A mass m1 = .80 kg sits on a table. The coefficient of kinetic friction between the mass and table is .10. What is the linear acceleration of the masses
A conducting bar rests on two parallel horizontal rails 50 cm apart forming a square area. The resistance of the bar and the rails is assumed to be constant and equal to 0.05 ??. What is the maximum value of the force acting on the bar during that ..
Electrons in a photoelectric effect experiment emerge from a copper surface by a maximum kinetic energy of 1.10eV. What is the wavelength of the light? Answer must be in nm units.
A molecule has a rotational inertis of 14,000 u.pm^2 and isspinning at an angular speed of 4.3 X 10^12 rad/s. Calculate the rotational kinetic energy inelectron-volts
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd