If pes represents the potential energy stored in a spring in kg . m^2 /s2 ,and x represents the change in spring length from its equilbrium position in m , what is the unitfor the spring constant k in the formula pes = 1/2 kx^2

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg