Rachel has three different samples of rare Earth metals. The first sample has a mass of 5.5. 10-grams, the second has a mass of 1.4 grams, and the third has a mass of 4.4 . 10-2 grams. Ignoring significant figures, what is the sum of these three masses?
11.3.10-59
1.449510-09
1.44959
11.39

According to the tide table below what time of day will the highest tide occur?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.