Apencil is dropped, point down, into water. if the pencil is released from a height of 0.04 nm (measured from the point to the water level), how far will it dive? treat the pencil as a cylinder of radius 0.40 cm, length 20 cm, and mass 4.0 gm. ignore the frictional and inertial resistance of the water, but take into account the buoyant force. hint: draw a neat sketch in which all variables, etc, are well defined, and then, using an appropriate free body diagram, make use of newton's 2nd law and write the acceleration in the form a v (dvldy)- a 1a rule when f is a function of y
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Physics, 21.06.2019 15:10
Alightning strike consists of charge moving from a cloud to the ground . in one particular case, the electrons in a lightning strike are confined to travel within a radius of 1.5 m and to move at a speed of 5.0 x 10 m/s. if the density of electrons in the strike is 10'15 electrons/m what current is carried by the lightning ?
Answers: 1
Physics, 22.06.2019 00:00
Name three different units of energy used to measure heat and describe what type of situations each is usually used.
Answers: 2
Physics, 22.06.2019 06:30
Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.
Answers: 2
Apencil is dropped, point down, into water. if the pencil is released from a height of 0.04 nm (meas...
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