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An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.4 V for 0.67ms . The resistance of the heart muscle between the pacemaker's electrodes is 550ohm . Find the current that flows during a pulse. Find the energy delivered in one pulse Find the average power supplied by the pacemaker.
A crane weights 10500kg and the wrecking ball is 800kg. the arm of a crane can extend to a lenght of 22m. Whats the max speed of the wrecking ball
When a car going 30m/s turns left around a curve of radius 35 cm, the 60 kg passenger slides to the right. How much force does the passenger exerts on the door
Two astronauts are at rest in outer space, one 12.1 m from the Space Shuttle and the other 24.2 m from the Shuttle. Using a 151.0-W laser, how long will it take her to reach the Space Shuttle
Two very thick equally-magmetized square plates of side 0.23m and of mass 20 g, Calculate the B field between the two plates, if the distance between them is 0.123 cm
What is the speed of the 2 cars as they move together after the collision.
A high-speed lifting mechanism supports a 745-kg object with a steel cable that is 31.0 m long and 4.00 cm2 in cross-sectional area. Determine the elongation of the cable
two small spheres spaced 20.0 cm apart have equal charge. How many excess electrons must be present on each spere
The third floor of a house is 7.00 m above street level. How much work is necessary to move a 143kg refrigerator to the third floor.
The prong of a tuning fork moves back and forth when it is set into vibration. what are the maximum velocity and the maximum acceleration of the prong
The diameter of the moon is 3.78x10^6 m. It subtends an angle of 0.00982 radians at the surface of the Earth. How far is the Moon from the Earth
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 69.40 diopters, How far (in meters) is the blackboard from her eyes
plan a vector to represent each of the two teams. find the magnitude of the resultant.
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