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A rectangular loop of wire that is 55 cm wide and 20 cm long is placed in a region where the magnetic field is B = 0.4 T. Suppose the wire loop lies in the x-y plane and that the magnetic field make
A sample of ideal gas with gamma factor 1.4 occupies a volume of 1.5 L. The gas undergoes an isochoric heating raising the pressure from 100 kPa to 300 kPa. What is the change in the internal energy
This simplified example illustrates the principle of ballistocardiography, but in practice a more sophisticated model of heart function is used. grams?
A 65 kg person throws a .045 kg snowball forward with a speed of 30 m/s. a second person with a mass of 60 kg catches the snowball. Both are at rest. What happens to the first skater?
Two particle of charge q1 and q2 are separated by distance d. The net electric field due to the particles is zero at x=d/4. With V=0 at infinity, located ( in terms of d) any point on x axis (other
The electron's acceleration is due to two electric forces parallel to the x axis: = 9.22 x 10-17 N, and , which points in the -x direction. Find the magnitudes of (a) the net force acting on the ele
A 65 kg person throws a .045 kg snowball forward with a speed of 30 m/s. a second person with a mass of 60 kg catches the snowball. both people are on skates.
Calculate the full width on the screen of the central maximum of the diffraction pattern.
Which of the following statements about the speed and acceleration of the cart just before the counterweight hits the ground is true?
To what temperature must this combination be cooled to separate the two metals if the aluminium rod were 10.05 cm in diameter?
A Styrofoam box has a surface area of 0.88 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 27°C. If it takes 7.4 h for 5.0 kg
Calculate the allowable internal design pressure at 72% design factor for an 18 in. pipeline, wall thickness 0.375 in. and pipe material API 5LX-46. What is the hydrotest pressure range for this pip
In a heart pacemaker, a pulse is delivered to the heart 81 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 2.3 x 106. One pulse is delivered every
A defibrillator is used during a heart attack to restore the heart to its normal beating pattern. A defibrillator passes 15 A of current through the torso of a person in 2.3 ms. (a) How much charge
A steam pipe is covered with 1.50 cm thick insulating material with a thermal conductivity of 0.200 cal/cm·°C·s. How much energy is lost every second when the steam is at 160°C
A large, hot pizza 80 cm in diameter and 2.0 cm thick, with a temperature of 120°C, floats in outer space. Assume its emissivity is 0.8. What is the order of magnitude of its rate of energy loss
Compare your answer with the rate of energy transfer through 1.0 m2 of a single 1.0 cm thick pane of glass. thermopane window J/s single pane window J/s
Calculate the diameter of the 5th bright ring (fringe) if the radius of curvature of the lens surface is 2.0 m and light of wavelength 590nm is reflected normally from the system.
A trailer truck enters a 2 percent uphill grade traveling at 72 km/h and reaches a speed of 108 km/h in 300 m. The cab has a mass of 1800 kg and the trailer 5400 kg. Determine (a) the average force
With what minimum speed must you toss a 150 ball straight up to just touch the 14--high roof of the gymnasium if you release the ball 1.7 above the ground? Solve this problem using energy. With what
At t = 0, two flat slabs each 5 cm thick, one at 0 degrees and one at 20 degrees, are stacked together, and then the surfaces are kept at 0 degrees. Find the temperature as a function of x and t for
A parallel-plate capacitor is connected to a battery. The energy of the capacitor is . The capacitor is then disconnected from the battery and the plates are slowly pulled apart until the plate sepa
The aurora is caused when electrons and protons, moving in the earth's magnetic field of 5x10^-5 , T collide with molecules of the atmosphere and cause them to glow. What is the radius of the circul
Calculate the amount of potential energy that was initially stored in the spring. Take free fall acceleration to be 9.80 .
Neglect the conductance of the liquid. Determine the charge on the plates after immersion. Calculate the capacitance after immersion. Calculate the voltage after immersion. Calculate the change in e