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!
Q1: A deformation of cross-linked polymeric microgel particle (Carbopol) is explained by the Kelvin-Voigt model (a spring with elastic modulus E and dashpot with viscosity connected in parallel). The elastic response is given by the polymer skeleton of the particle while the viscous one by the liquid contained in the network. The microgel particle in an AFM experiment is confined between two flat surfaces such that it makes a cylinder with diameter of 2 m. Under constant load of 200 pN, it sags by 5 percent after 10 seconds while finally shrinking by 15% in height. Evaluate the elastic modulus E and equivalent viscosity of the Carbopol material. Calculate the time the microgel would require to recover to 99% of its initial height after the stress is removed.
Q2: Suppose a solution of lysozyme proteins in 1 mmol/L salt buffer with the Debye length of ca. 10 nm. The charge on proteins at these conditions is 10e, the Hamaker constant H = 10kBT. The shape of the molecule will be approximated by a sphere with radius of 1.7 nm. Determine the potential barrier for the molecule aggregation? Will the solution be stable at these conditions? Will it be stable at 100 mmol/L salt concentration?
When this capacitor is discharged through the strobe lamp, it transfers all its energy in 1.0x10-4 s. Find the power delivered to the lamp
Assume that each cubic centimeter of water has a mass of exactly 1.00 g. What is the mass of one cubic meter of water
Suppose you have a 9.00 V battery, a 2 ?F capacitor, and a 7.25 ?F capacitor. Find the charge if the capacitors are connected to the batt
Bulb of resistance 10 ohm, connected to an inductor of inductance L is in series with ac source marked 100 V %u2013 50 Hz. Calculate the value of L
A motorcycle, which has an initial linear speed of6.3 m/s, decelerates to a speed of 2.3 m/s in 4.9 s. What is the angular displacement (in rad) of each wheel
High-voltage power lines are a familiar sight throughout the country. What is the resistance of ten kilometers of this wire
A new electric power plant has an efficiency of 42%. how many are essentially lost as waste heat (in barrels of oil) to the environment
A 61-kg and a 97-kg skydiver jump from an airplane at an altitude of 6100 m, both falling headfirst. Calculate their terminal velocities
Two capacitors, C1 = 2x10^-6 F and C2 = 4x10^-6 F, are connected in series with an 18 V battery. Find the final charge and potential difference for each capacitor
The cathode-ray tubes that generated the picture in early color televisions were sources of x rays. what are the shortest-wavelength x rays produced by the television
A 3.2 kg sloth hangs 3.2 m above the ground. What is the speed of the sloth at this time
The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5
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