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The human body can exhibit a wide range of resistances to current depending on the path of the current, sweatiness of the skin and contact area. Assume the resistance across the chest from the left hand to the right hand is 2.00 x 106 ohm.
(a) Find how much voltage is required to cause possible heart fibrillation in a man, which corresponds to 490 mA of direct current?
In an X-ray scattering measurement the first order diffraction peak is observed at ? = 12.3°. At what angle is the second order peak observed
A note played on a piano is 4719 Hz. If the speed of sound is 347 m/s, what is the wavelength of the note?
the central order for a diffraction pattern from a rectangular aperture is measured to be 15 mm high and 5 mm wide on a
a ball is tossed directly upward at an initial speed of 5.7m/s and is caught when it falls back down to the throwers hand, how much total time is the ball airborne
An oak barrel with a lid of area 0.20 m2 is filled with water. A long, thin tube of cross-sectional area 5.0 X 10-5 m2 is inserted into a hole at the center of the lid, What was the net force on the lid due to the water pressure
a stick of uniform density with mass m 8.3 kg and length l 0.8 m is pivoted about an axle which is perpendicular to
After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. If an archaeologist finds an ancient firepit containing partially consumed firewood, what is the age of the ancient site
the following takes place at a colony on the moon some time in the distant futurea 40 kg cannon is loaded with a 10 kg
Suppose a disk of radius R and mass M starts from rest at a height of 2.5m, What is the linear speed of the disk when it leaves the incline
the driver of a 3000 lb car coasting down a hill sees a red light at the bottom and must stop. his speed when he
The first sled is 30kg, connected with rope B to the second sled of mass 20 kg, connected with rope A to the first sled of mass 10 kg, which is being pulled by a rope of 137 N. Illustrate What is the tension in ropes A and B.
A stone thrown vertically upward with a velocity of 14.3 m/sfrom edge of a cliff 79m high. From its highest point it then fallsall the way to the base of the cliff.
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