Urgent answer the numerical part of your answer in standard notation and two significant digits. a 1.52 kg block is attached to a spring with a spring constant k = 89.0 n/m. it is set in motion by being displaced 9.22 cm downward. what is its frequency in hz?

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?