Analysis of a basalt rock sample shows that 25% of its radioactive K-40 remained undecayed. How old is the basalt? A) 2.6 billion years
4.6 billion years
B) 1.3 billion years
D) 3.9 billion years

The step-down transformer gives a current of 10a at 24v if the primary voltage is 240v calculate the 1_primary current 2_the power input 3_the power output

Awalk up the phase change graph worksheet

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.