P = m v
250 = m5
250 = 5m
m = 50 Kg
Option C
Answer:
-1.11 m/s²
Explanation:
v = at + v₀
Given v = 20 m/s, v₀ = 120 m/s, and t = 1.5 min = 90 s:
20 m/s = a (90 s) + 120 m/s
a = -1.11 m/s²
R = ρl/A
From the equation above R = Resistance, l = length, A = Cross Sectional Area of wire.
From the equation, it can be seen that R would increase if the wire's area is reduced.
If the area of the wire is reduced, means the same thing as:
<span>A. decreasing the wire’s thickness</span>
Answer:
The marble as lost energy due to gravity, air resistance (if there is air), and the centripetal force when going around that loop.
Explanation:
Also a little in heat but that rly doesnt matter