A15.0-kilogram mass is moving at 7.50 meters per second on a horizontal, frictionless surface. what is the
total work that must be done on the mass to increase its speed to 11.5 meters per second?
(1) 120. j (3) 570. j
(2) 422 j (4) 992 j

Let f(x) = x4- 8x2 . find the relativeextrema of this function using the second derivative test.

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel