What is the approximate tangential speed of an object orbiting Earth with a radius of 1.8 x 108 m and a period of 2.2 x 104 s?
co
O 7.7 x 10-4 m/s
5.1 x 104 m/s
7.7 x 104 m/s
5.1 x 105 m/s
O
B

Which statement best explains why an object weight less on mercury than it does on earth

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

Which of these metals are magnetic?