A constant pull of 8.5 N at an angle above the horizontal drags a box along a horizontal floor through a distance of 17.4 m. If the pull does 65 J of work on the box while pulling it through the distance, what angle does the force make with the horizontal? A. 148 J
B. 200 J
C. 341 J
D. 88J

Which of the following is a question of morality? a.) delierately reporting false data b.) accidentally reporting false data c.) kepping a sloppy record of experimental observation d.) condition a drug experiment which will harm a lab rats

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

What is the next step in muscle contraction after the actin changes shape? (apex)