Answer:
D = 43 m
Explanation:
given,
initial velocity = 18 m/s
angle θ = 60°
total horizontal distance covered by the shell is
applying conservation of momentum in horizontal direction
m v₀ cos θ = m₁v₁ + m₂ v₂
m v₀ cos θ = 0.5 m v₂
v₂ = 2 v₀ cos θ.
distance covered by the shell from point of explosion
R' = v t
=
=
=
= R
total distance traveled by the shell is
D =
= 1.5 R
=
D =
= 42.9 ≅ 43 m
D = 43 m
Explanation:
4.
Given: Δd = 4 + 2 + 1 = 7km, Δt = 32 + 22 + 16 = 70mins
Required: V
Equation: V = Δd/Δt
Solution: V = 7/70
= 0.1km/min
Answer:
The second one
Explanation:
For example using a battery, copper, and a nail
Answer:
Explanation:
Given
mass of satellite
orbital radius
mass of Earth
Minimum amount of Energy to move Satellite from its orbit to an infinite distance is sum of Potential Energy + Kinetic Energy of Satellite
Where
i.e. Energy is required to provide to move Satellite out of its orbit
1. Increase the amount of gas. Adding more molecules of gas increase how much they collide therefore increasing the temperature.
2. Decrease the volume of gas. This also increases how much they collide and increases the temperature.