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A .5-kg object is attached to a spring of spring constant 30 N/m and released from rest at t=0 from a position .25 m from equilibirum. Find the equation which describes its x location as a function
One gram of water changes from liquid to solid at a constant pressure of 1.00 atm and a constant temperature of 0°C. In the process, the volume changes from 0.60 cm3 to 1.10 cm3. Find the change
A merry-go-round rotates from rest with an angular acceleration of 1.50 rad/sec^2. How long does it take to rotate through (a) the first 2.00 rev and (b) the next 2.00 rev?
Calculate the work done by friction during one complete circular trip if the radius is (a) 2.00 m and (b) 4.00 m. (c) On the basis of the results you just obtained, would you say that friction is a
At a particular instant of time the velocity of the particle has components = 1.63×10^4 , = 3.12×10^4 , = 5.90(10)^4 What is the x-component of the force on the particle at this time?
Assuming that the astronaut starts from rest, find the final speed of the astronaut after throwing the tank. Answer in units of m/s.
If 1.0 m3 of concrete weighs 4.5 104 N, what is the height of the tallest cylindrical concrete pillar that will not collapse under its own weight? The compression strength of concrete (the maximum
A 10-m uniform beam of weight 100 N is supported by two ropes atthe ends. If a 400-N person sits at 2.0 m from the left end of thebeam, what is the tension in the left rope?
Suppose we send such a beam through a polarizing filter and then rotate the filter through 360° while keeping it perpendicular to the beam. If the transmitted intensity varies by a factor of 5.7
Ultraviolet light with a wavelength of 60nm shines on a gas of hydrogen atoms in their ground states. Some of the atoms are ionised by the light. What is the kinetic energy of the freed electrons in
A pendulum bob of mass 'm' is hung from a light string,the bob then moves in a horizontal circle of radius 'r' and the string makes an angle alpha with the vertical. If the angular velocity of the b
Sand drops from sationary hopper at the rate of 5kg/s on to a conveyor belt moving with a constant speed of 2m/s. What is the power delivered by the motor drawing the belt?
Determine the evaporator temperature at which a single-stage R22 plant will cease to produce any refrigerating effect in delhi where the condenser temperature is 42 degree C. the and the compressor
(a) Determine the energy of phonons, which can be created by a Brillouin inelastic scattering, as a function of the angle (phi) of scattering and (b) plot your results.
An object of mass m1 collides (an elastic collision) with another one of mass m2. (1) At what angle we must put a detector to detect the particles m1 that looses half its initial momentum?
Write a VBScript code lines that define a constant TAXRATE that is 25%, a variable basePay that is 1000, and a variable bonusPay that is 500.00. Calculate the net pay, and asign that value to netPay
Assume with the tight-binding framework, that we need to consider only 1 Wannier orbital from each site. The energy level of this Wannier orbital is e0 (i.e. alpha = -e0). In addition, we retain the
Would the electronic specific heat increase or decrease as the bandwidth is increased? Write down the arugments explicitly please. (Qualitative physical argument would be enough)
Determine the energy dispersion for a bcc strucutre and an fcc structure where a is the length of the cubic cell.
In molecules of gaseous sodium chloride, the chloride ion has one more electron than proton, and the sodium ion has one more proton than electron. These ions are separated by about 0.24 nm. How much
If a Van de Graff generator has an electric potential of 169 kV and a diameter of 18.9 cm, find how many more protons than electrons are on its surface.
Assuming that this radiation was distributed uniformly over the surface of the Earth, what was the activity per square meter? (The actual activity was not uniform; even within Europe wet areas recei
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800kg/m3 , length 90.1cm and diameter 2.05cm from a storage room to a machinist. Calculate the weight of the rod, w. The