We would like to use the fundamental frequency of a wire to measure gravity on a new planet. we will first calibrate an instrument on earth. we will then use the instrument on this new celestial body. a. we hang a wire having a mass of 3.58 g and length 44.2 cm from the ceiling. what mass would we hang from this wire (giving us tension) to get a fundamental mode of vibration at 100 hz? b. using the same wire and mass from the previous section to the new if we set the experiment up again and measure a new fundamental frequency of 98.9 hz, what is g on this new planet? g acceleration of gravity

Wind or electric energy force force of friction

Molybdeum(mo)orruthenium (ru)actually, elements with similar chemical properties as technetium would bemn, re, and bh. this is because elements in the same group/family (column) have similar chemical properties. elements in the same period (row) have the same number of energy levels (or shells).

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j