Answer:
The height of the hill is 0.46 m.
Explanation:
Given;
mass of the child and sled, m = 50 kg
initial velocity of the sled, u = 0
final velocity of the sled, v = 3 m/s
The height of the high is calculated from the law of conservation of energy;
P.E at top = K.E at bottom
mgh = ¹/₂mv²
gh = ¹/₂v²
Therefore, the height of the hill is 0.46 m.
Answer:
6 V
Explanation:
We can solve the problem by using Ohm's law:
where
V is the voltage in the circuit
R is the resistance
I is the current
In this problem, we know the current, , and the resistance,
, therefore we can find the voltage in the circuit:
Complete Question
The complete question is shown on the first uploaded image
Answer:
The spring scale reads
Explanation:
From the question we are told that
The first force is
The acceleration by which the cart moves to the right is
The mass of the cart is m = 3.231 kg
Generally the net force on the cart is
This net force is mathematically represented as
So
