Answer:
Use of the "range" formula will greatly simplify this -
R = V^2 sin 2 θ / g
R = 15^2 sin 70 / 9.8 = 21.6 m distance originally traveled
r = 21.6 /2 = 10.8 if distance is halved
sin 2 θ = 10.8 * 9.8 / 225 = 28.1 deg
θ = 14 deg
A. The molecules start packed together very tightly in a solid. Then when it turns to water, the molecules can move around each other freely, but still contained. When water turns to vapor, the molecules are going crazy moving around. They are not contained at all and bounce of of each other freely.
b. The temperature rises. (ice turns to water at 33 degrees and water turns to vapor at 212 degrees)
Answer:
When we talk about residential uses of energy, these are the most basic uses of energy . They include watching television, washing clothes, heating and lighting at home , taking a shower, working from home on your laptop or computer, running appliances and cooking.
Answer:
A = [m/s]
B = [m/s²]
Explanation:
Assuming that V has SI units of m/s, then A and BT must also have units of m/s.
A = [m/s]
BT = [m/s]
Since T has SI units of s:
B [s] = [m/s]
B = [m/s²]