Ablock with mass m = 7 kg is attached to two springs with spring constants kleft = 37 n/m and kright = 48 n/m. the block is pulled a distance x = 0.21 m to the left of its equilibrium position and released from rest. 1) what is the magnitude of the net force on the block (the moment it is released)? 2) what is the effective spring constant of the two springs? 3) what is the period of oscillation of the block? 4) how long does it take the block to return to equilibrium for the first time? 5) what is the speed of the block as it passes through the equilibrium position? 6) what is the magnitude of the acceleration of the block as it passes through equilibrium? 7) where is the block located, relative to equilibrium, at a time 1.23 s after it is released? (if the block is left of equilibrium give the answer as a negative value; if the block is right of equilibrium give the answer as a positive value). 8) what is the net force on the block at this time 1.23 s? (a negative force is to the left; a positive force is to the right). 9) what is the total energy stored in the system? 10) if the block had been given an initial push, how would the period of oscillation change?

An isolated conducting spherical shell carries a positive charge. part a which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? electric potential inside the shell is constant and outside the shell is changing as 1/r2 both the electric potential and the electric field does change with r inside and outside the spherical shell electric potential inside and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is equal to zero electric field inside and outside the shell is constant (does not change with the position r), but is not equal to zero electric field inside and outside the shell is changing as 1/r (where r is the distance from the center of the sphere) electric field inside is equal to zero and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is changing as 1/r electric field inside and outside the shell is changing as 1/r2 electric field inside is equal to zero and outside the shell is changing as 1/r2 electric field inside and outside the shell is zero electric field inside is constant and outside the shell is changing as 1/r

Which is the most accurate name for the ionic compound cas?

Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly