Prevents movement by external forces ___Decelerates movement ___Causes the body part to move against gravity or external forces ___Joint angle changes in the direction of the applied muscle force ___Muscle gradually lessens in tension to control the descent of resistance ___ Accelerates movement ___Muscle force < resistance ___Muscle tension acts to maintain joint angle in stable position ___Muscle develops enough force to overcome applied resistance or gravity ___Joint angle changes in the direction of the resistance or external force ___Muscle force > resistance

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults

It is really hard for me right know