Agroup of students uses a pitfall trap for capture and release of rare stag beetles. which of
these situations would not cause an error in estimating the population size?
• o a. the stag beetles were infected with a fungal pathogen and a large number died
between weeks one and two.
•
o b. the stag beetles are evenly distributed throughout the forest.
o
c. the stag beetles could not disperse widely in the week between samples.
• o d. stag beetles have a larval stage in their life cycle, which was not caught by the pitfall
traps.

Shelly experiences a backward jolt when the driver starts the school bus. which of the following explains this phenomenon? a. the inertia of shelly b. the inertia of the bus c. the normal force of the seats on shelly d. the net force acting on shelly in a backward direction e. a zero net force acting on shelly

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?