Question 4 HELP ASAP PLEAS! With what initial speed must a gazelle jump to reach 2.5 meters in height?
a
7 m/s
b
25 m/s
с
49 m/s
d
5 m/s
Question 5
1. What is the potential energy of a 20 kg object, it is 10 m high from the

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.

Anybody wanna ? (picture included? )

Objects a and b are visible in the night sky. six months later they are still visible, but object b shows less parallax than object a. which object is closer? a. a b. b c. you would need to wait another six months in order to figure this out. d. you would need to know the objects' angular diameters in order to figure this out.