How long does a lunar eclipse last? a)seconds b)minutes c)days d) weeks

Zirconium has an hcp crystal structure and a density of 6.51 g/cm3. (a) what is the volume of its unit cell in m3? (b) if the c/a ratio is 1.593, compute the values of c and a.

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped