Ablock is suspended from the ceiling by a long, thin strip of tungsten metal. the strip behaves as a spring. to produce a 0.25m horizontal deflection of the block, a force of 6.5 n is required. calculate the spring constant for the tungsten strip.

What are similarities and differences between refraction, reflection, diffraction and absorption?

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?

Asmall grinding wheel has a moment of inertia of 4.0×10−5 kg⋅m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?