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 4.30 g and length 47.9 cm from the ceiling. what mass would we hang from this wire (giving us a tension) to get a fundamental mode of vibration at 100 hz? assume that this wire is made of a special material that does not stretch when we hang the mass. b. we now take the same wire and the mass found in the previous section to the new planet. if we set the experiment up again and measure a new fundamental frequency of 76.6 hz, what is g on this new planet?

Your starship, the aimless wanderer, lands on the mysterious planet mongo. as chief scientist-engineer, you make the following measurements: a 2.50-kg stone thrown upward from the ground at 14.0 m/s returns to the ground in 5.70 s ; the circumference of mongo at the equator is 2.20×10^5 km ; and there is no appreciable atmosphere on mongo. (a) the starship commander, captain confusion, asks for the following information: what is the mass of mongo? (b) if the aimless wanderer goes into a circular orbit 2.20×10^4 km above the surface of mongo, how many hours will it take the ship to complete one orbit? (c) an unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 44.0 km . to the dismay of scientists on earth, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 23.0 m/s . if nothing is done to correct its orbit, with what speed (in km/h) will the spacecraft crash into the lunar surface?

One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.

Aball of mass 0.3kg is released from rest at a height of 8m. how fast is it going when it hits the ground? accleration due to gravity is g=9.8m/s