Answer:
6.25 A
Explanation:
We cant find the current drawn by the element by using Ohm's law:
where
V is the potential difference across the resistance of the element
R is the resistance
I is the current
In this problem, we know
V = 200 V
Therefore we can re-arrange the equation and solve for the current:
Answer:
Explanation:
Required
The units of A and B
From the question, we understand that:
This implies that each of and
will have the same unit as
So, we have:
The unit of t is (s); So, the expression becomes
Divide both sides by
Answer:
a) y₂ = 49.1 m , t = 1.02 s , b) y = 49.1 m , t= 1.02 s
Explanation:
a) We will solve this problem with the missile launch kinematic equations, to find the maximum height, at this point the vertical speed is zero
² =
² - 2 g (y –yo)
The origin of the coordinate system is on the floor and the ball is thrown from a height
y-yo = =
- g t
t = / g
t = 10 / 9.8
t = 1.02 s
b) the maximum height
y- 44.0 = ² / 2 g
y - 44.0 = 5.1
y = 5.1 +44.0
y = 49.1 m
The time is the same because it does not depend on the initial height
t = 1.02 s