Answer:
I'm not sure, its either 1 or 2
Explanation:
Water melts ice because it is at a higher temperature than the ice, so heat energy is transferred from the water to the ice. Since the scientific principle at work here is the idea of heat transfer, it is not necessary that water be used to melt ice.
Acceleration is -7 m/s²
Explanation:
initial velocity (u) = 14 m/s
since it's gonna stop,
final velocity (v) = 0m/s
time taken(t) = 2 seconds
now,
a = (v-u)/t
or, a = (0-14)/2
or, a = -14/2
a = -7m/s²
Answer: that’s chemistry not physics
Explanation:
Answer:
c) N_s / N_p = 115.15
Explanation:
Let's look for the voltage in the secondary, they do not indicate the power dissipated
P = V_s i
V_s = P / i
V_s = 76 / 5.5 10⁻³
V_s = 13.818 10³ V
the relationship between the primary and secondary of a transformer is
Ns / Np = 13,818 10³ /120
N_s / N_p = 115.15