Gather data: Select Mercury from the Solar system menu at left. Turn on Additional data. In the table below, record Mercury’s Mass, Mean radius, and Density. Then repeat for each of the other planets as well as the dwarf planet Pluto. Include units. Planet
Mass (×1023 kg)
Mean radius (km)
Density (g/cm3)
Mercury

Venus

Earth

Mars

Jupiter

Saturn

Uranus

Neptune

Pluto (dwarf planet)

The position of a dragonfly that is flying parallel to the ground is given as a function of time by r⃗ =[2.90m+(0.0900m/s2)t2]i^− (0.0150m/s3)t3j^. a: at what value of t does the velocity vector of the insect make an angle of 34.0 degree clockwise from the x-axis? b: at the time calculated in part (a), what is the magnitude of the acceleration vector of the insect? c : at the time calculated in part (a), what is the direction of the acceleration vector of the insect?

An ideal spring has a spring constant (force constant) of 2500 n/m, is stretched 4.0 cm, how much elastic potential energy does it possess? (a) 3j (b) 0.00j (c) 1j (d) 2j (e) 4j

As the distance from a magnet increases, what happens to the magnet force?