B A spring whose original length is 7 mm (to the nearest mm) lengthens to 10 mm (to the nearest mm) when a force of 0.4 N pulls on it. Calculate the
spring constant of the spring.
6 a
Estimate the spring constant of the spring in a school newtonmeter with a
measurement range of 0–10 N. Show your reasoning.

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Which type of basaltic lava flow has a fairly smooth

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_