Which of the following is not part of the role of a forester?
a.
develop sustainable practices
b.
prevent removal of timber
c.
determine means for continued growth
d.
assess timber quality

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.

One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.