Jack and jill are maneuvering a 3000 kg boat near a dock. initially the boat's position is < 2, 0, 3> m and its speed is 1.3 m/s. as the boat moves to position < 4, 0, 2> m, jack exerts a force of< -400, 0, 200> n, and jill exerts a force of < 150, 0, 300> n. what is final speed of the boat?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Arrange the images in order to show how lake-effect snow occurs.