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Find the current that flows during a pulse. Find the energy delivered in one pulse Find the average power supplied by the pacemaker.
A film with n= 1.65 is deposited on glass with n= 1.5. what is the thinnest film that will produce constructive interference in the reflection of light with a wavelength of 530 nm? a) 321 nm b) 353
At one time, television sets used "rabbit-ears" antennas. Such an antenna consists of a pair of metal rods. The length of each rod can be adjusted to be one-quarter of a wavelength of an electromagn
Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 7.03 x 104 rad/s, starting from rest?
The tires of a car make 71 revolutions as the car reduces its speed uniformly from 95 km/h to 44 km/h . The tires have a diameter of 0.77m. What was the angular acceleration of the tires?
The blades in a blender rotate at a rate of 6600 rpm. When the motor is turned off during operation, the blades slow to rest in 2.9 s what is the angular acceleration as the blades slow down in rad/
A thin insulating rod is bent into a semicircle arc of radius a, and a total electric charge Q is distributed uniformly along the rod. Calculate the potential at the center of curvature of the arc i
A infinite long cylinders symmetric current distribution with radius R and a total current I > 0. the distributions current density J is time independant, parallel with the cylinder axis and has
A glass lens (nglass = 1.52) has a 134 nm thick anti-reflective film (nfilm = 1.39) on one side. Light, moving through the air, is normally incident on the lens passing through the film. What is the
Light of wavelength 558.0 nm is incident on a narrow slit. The diffraction pattern is viewed on a screen 78.5 cm from the slit. The distance on the screen between the third order minimum and the cen
A student holds a tuning fork oscillating at 258 Hz. He walks towards a wall at a constant speed of 1.42 m/s. (a) What beat frequency does he observe between the tuning fork and its echo?
The lowest frequency that produces resonance is 4100 Hz. The speed of sound in an aluminum rod is 5100 m/s. Find the length of the rod.
Resonance is heard when the piston is at a distance d1 = 23.0 cm from the open end and again when it is at a distance d2 = 68.3 cm from the open end. (a) What speed of sound is implied by this data?
a-Write the displacement vector from plane to ship, letting represent east, north, and up. km b-How far apart are the plane and ship?
It takes the cannonball 1.15 seconds to fall to the ground, and air resistence is negligible. How much work is done by gravity on the falling cannonball? ______J During the fall, what is the average
Compare the energy consumption of two commonly used items in the household. Calculate the energy used by a 1.40 kW toaster oven, Wtoaster, which is used for 6.60 minutes and then calculate the amoun
Two point charges, Q and -3Q are located a distance d apart, with -3Q to the right of Q. Find the location of all the points (not counting infinity) at which the potential (relative to infinity) du
A satellite circles the earth in an orbit whose radius is 3.78 times the earth's radius. The earth's mass is 5.98 x 1024 kg, and its radius is 6.38 x 106 m. What is the period of the satellite?
A jet flying at 110 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, and the mass of the jet is 1.64 × 105 kg. Calculate the magnitude of the necessary lifting fo
After the collision, Skater A moves at an angle of 53.1o from her original direction, while Skater B moves at an angle of 36.9o from Skater A's original direction. Both skaters move on the frictionl
The spring has spring constant k = 3200 N/m. (a) What is the initial speed of the bullet?
Find the equations for the components of net force in static equilibrium. Find the net torque. Be sure to indicate where the pivot point is. What do each of the scales read? (Hint: the forces on the
(c) Find the torque about the origin acting on the object.(d) Find the angle between the velocity of the object and the force acting on the object.
Calculate the total pressure drop due to friction in the pipeline. If the MAOP of the pipeline is limited to 10 MPa, how many pumping stations will be required to transport this volume, assuming fla
find the minimum safe dropping height given the impact velocity must not exceed (0.2g)^1/2 m/s Please show and explain ALL and work.