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A count rate meter is used to measure the activity of a given sample. At one instant, the meter shows 4.750 counts/min. Five minutes later, it shows 2700 counts/min. Find a) the decay constant&nb
Problem 1 :Calculate electric output of the nuclear power plant (measured in MWe).Problem 2 :Assume that 65% power was produced by U-235 Fissions.Calculate Mass of Uranium-235 used in the reactor duri
A long thin solenoid has 55 turns/cm and carries a current of 0.212 A. The solenoid is filled with iron and the magnetic field is measured to be 1.49 T.Neglecting end effects, what is the applied magn
Biologically usefull technetium nucleuii (at wt 99) have half life of 6 hours. A solution containing 10^-12 gram of this is injected into the bladder of a patient.Find the activity at the begning and
In a rectangular corrdinate system, a postitve point charge q = 6.00nC is placed at the point x = +.150 m, y = 0, and an identical point charge is placed at x = -.150 m, y = 0.Find the x and y compone
Calculate the heat absorbed by 19.5 g of TeF6 when its temperature changes from 500 K to 750 K at constantpressure.ForTeF6, CP /R=a+bT+cT?2 ,where a=17.73, b=0.82×10?3K?1,and c = ?3.52 ×10
A rigid tank is divided into two rooms by a membrane, both containing water. Room A is at 200 kPa, ??=0.5 m3/kg, VA=1 m3 and room B contains 3.5 kg at 0.5 MPa and 400oC. The membrane now ruptures and
Three balls of equal mass are fired from the same position at a height h above horizontal ground with equal speeds. The only difference between them is the direction in which they are projected: Ball
Find the radius R of the orbit of a geosynchronous satellite that circles the earth. (Note that R is measured from the center of the earth, not the surface.) You may use the following constants:The un
Calculate (A? ×B? )?C? for the three vectors A? with magnitude A = 5.02 and angle ?A = 25.6? measured in the sense from the +x - axis toward the +y - axis, B? with B = 4.02 and ?B = 62.6?, and C
You are given vectors A? = 5.1 i^? 6.6 j^ and B? = - 3.6 i^+ 7.1 j^. A third vector C? lies in the xy-plane. Vector C? is perpendicular to vector A? and the scalar product of C? with B? is 16.0.Find t
A laser with light of wavelength 500 nm shines through two parallel thin slits separated by 0.5 mm onto a screen, and an interference pattern is seen.At what distance should the screen be placed so th
A resonance tube for a pipe-organ is closed at the bottom by a speaker (pressure antinode) and open to the atmosphere at the top (pressure node).How long should the tube be built so that its fundament
An amplifier supplies 5.0 Watts to a perfectly efficient loudspeaker at one end of a 10.0 cm diamter tube filled with air.What is the intensity of the sound at the other end of the tube?What is the in
A wave of amplitude Ai and wave number ki is incident on the junction of two strings. If the wave number in the second string is kt = 2ki , find the amplitudes of the transmitted and reflected waves.
A moving 4.10 kg block collides with a horizontal spring whose spring constant is 260 N/m. The block compresses the spring a maximum distance of 15.00 cm from its rest position. The coefficient of kin
A 0.45 kg mass sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (with k = 750 N/m) whose other end is fixed. The mass has a kinetic energy of 9.0 J as it pass
A 0.223 kg ball is thrown straight up from 1.81 m above the ground. Its initial vertical speed is 8.40 m/s. A short time later, it hits the ground.Calculate the total work done by the force of gravity
A car (m = 700.0 kg) accelerates uniformly from rest up an inclined road which rises uniformly, to a height, h = 42.0 m.Find the average power the engine must deliver to reach a speed of 20.3 m/s at t
A point charge q1 = 4.00nC is located on the x-axis at x = 2.15m , and a second point charge q2= -6.95nC is on the y-axis at y = 1.05m .What is the total electric flux due to these two point charges t
Find the relationship between the length h and width a of a regular right triangular prism such that the prism is equally likely to land on each face when:A. dropped from a great height in th air. (ai
Consider a piston cylinder with 0.5 kg of R-134a as saturated vapor at -10oC. It is now compressed to a pressure of 500 kPa in a polytropic process with n=1.5.Find the final volume and temperature and
A series circuit has R=400 ohm, l=10 mh, c= 0.1 micro farad, and the frequency is 7960 hz , what is the power factor ?and how would you change the series circuit to make power factor unity. compute re
A yellow compound, dissolved in methylene chloride, is added to a chroma- tography column. The elution is begun using petroleum ether as the solvent. After 6 L of solvent have passed through the colum
If a hot air balloon floats at a constant elevation (it has reached equilibrium) where the local atmospheric pressure is 98 kPa (abs) and outside air temperature is 285 K, and the hot air inside the b