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!
A. How many grams of ice at -17 oC must be added to 741 g of water that is initially at a temperature of 70 oC to produce water at a final temperature of 12 oC? Assume that no heat is lost to the surroundings and that the container has negligible mass. The specific heat of liquid water is 4,190 J/kg.oC and that of ice is 2,000 J/kg.oC. For water, the normal melting point is 0 oC, and the heat of fusion is 334 x103 J/kg. The normal boiling point is 100 0C, and the heat of vaporization is 2.256 x 106 J/kg.
B. An unknown solid sample with a mass of 85.0 g at a temperature of 100.0 oC is placed in a calorimeter. The calorimeter vessel is made of 0.1500 kg of copper and contains 0.200 kg of water. Both the calorimeter vessel and the water are initially at 19.0 oC. The final temperature of the system is measured to be 26.1 oC.
What is the specific heat of the sample? (Assume no heat loss to the surroundings.)
The specific heat of copper is 390 J/kg-K.
The specific heat of water is 4.19E3 J/kg-K.
One mole of a monatomic gass initially at 273 K and 1 atm is compressed isothermally (T constant) from volume 22.4 L to 11. 4 L, Find the final pressure and draw a PV diagram, Labeling the initial and final states 1 and 2
Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, find the oxygen concentration at the interior end of the tube
The lens has a refractive index of 1.30. Find out the difference Δx in the positions where each crosses the principal axis.
A 7.89-kg fish swimming 4.23 m/s swallows an absent-minded 5.16-kg fish swimming toward it at a velocity that brings both fish to a halt immediately after lunch
Now consider what happens when the switch is opened. What happens to the brightness of bulb A? What happens to bulb C? Please be sure to explain why.
The maximum charge on the capacitor in an oscillating LC circuit is Q0. What is the capacitor charge, in terms of Q0, when the energy in the capacitor's electric field equals the energy in the inductor's magnetic field? Give your answer in terms of Q..
In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 548 nm. What is the stopping voltage required
A hydrogen atom at rest in the laboratory emits the Paschen ? radiation. Compute the recoil kinetic energy of the atom
How many days does it take for a perfect blackbody cube (0.0206 m on a side, 66.9 °C) to radiate the same amount of energy that a one-hundred-watt light bulb uses in one hour?
Two 4.2- µF capacitors, two 2.3kohm resistors, and a 12.0-V source are connected in series. how long does it take for the current
A girl on a sled coasts down a hill. Her speed is 7.60 m/s when she reaches level ground at the bottom. The coefficient of kinetic friction between sled's runners and the hard, icy snow is 0.04, and the girl and sled together weigh 644N.
The average force exerted on him by the ground is +18000 N, where the upward direction is taken to be the positive direction. From what height did the student fall? assume that the only force acting during the collision is that due to the ground.
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