The sound gets louder as it gets closer and when it passes is gets softer
Answer:
Explanation:
Firstly finding
So,
Substitute
Exchange the values of x and y
Solving for y
Adding 5 to both sides
Dividing both sides by 10
Replace
For x = -4
Answer:
The equivalent resistance of the combination is 3.42 ohms.
Explanation:
We have,
8 ohms resistor is connected in parallel with a 6 ohms resistor. It is required to find the equivalent resistance of this combination.
For a parallel combination, the equivalent resistance is given by :
Plugging the values of R₁ and R₂, we get :
So, the equivalent resistance of the combination is 3.42 ohms.
Answer:
1) The volume of helium in the ballon when is fully inflated is 492.8070 m³
2) The magnitude of the force of gravity (with no people) is 869.3119 N
Explanation:
Given:
ρair = density of air = 1.28 kg/m³
ρhelium = density of helium = 0.18 kg/m³
R = radius of balloon = 4.9 m
mtotal = 121 kg
Vtotal = 0.073 m³
mp = average mass per person = 73 kg
Vp = 0.077 m³
g = gravity = 9.8 m/s²
Questions:
1) What is the volume of helium in the balloon when fully inflated, Vhelium = ?
2) What is the magnitude of the force of gravity on the entire system (but with no people), Fg = ?
1) The volume of helium in the ballon when is fully inflated
2) First, you need to calculate the mass of helium
The magnitude of the force of gravity (with no people)
Answer:the dart goes 6m deep
Explanation:
1/2 k x1² = mgh1 (1)
1/2 k x2² = mgh2 (2)
Dividing 1 by 2 gives the relation
(x1/x2)²= h1/h2
using given
[x/ (x/2)]²=24/h2
4= 24/h2
h2=6 m