Answer:We have seasons because the earth is tilted (wonky) as it makes its yearly journey around the sun. The Earth's axis is tilted at an angle of 23.5 degrees. This means that the Earth is always "pointing" to one side as it goes around the Sun.
Explanation:
got this from the internet
Answer:
a)= 29.4J
b)F = 588 N
c)= 60 Kg
Explanation:
Force constant of the spring (k) = 5880 N/m
Change in length of the spring (x) = 25 - 15 = 10 cm 0.1m
This work done on the spring as it is stretched (or compressed) can be recovered. This is stored work that can be used to do work on something else by this spring. That means the stretched (or compressed) spring has energy -- potential energy. This is spring potential energy or elastic potential energy.
a) Work done in pulling the body W = 1/2kx²
= 1/2 (5880)(0.1)2
= 29.4J
b)From Hook's Law,
F = ke
Where F = applied force, k = spring constant, e = extension.
Given: k = 5880 N/m, e = 25-15 = 10 cm = 0.1 m.
Substitute into the formula above
F = 5880(0.1)
F = 588 N
c)By using the formula, F = -kx
Hence mg = kx
Thus m x 9.8 =5880 x0.1
Hence mass of the body
m= 5880 x0.1/9.8
= 60 Kg
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)