An object of mass 1.2 kg is attached to a string of 0.83 m. When this object is rotated around in a horizontal circle with a constant speed, it completes 15 rotations in 9.6 seconds. Calculate a. period (T) of this motion
b. speed of the object
c. tension on the string

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

Ascientific blank must be testable and capable of being proven false?

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?