Stressing an equilibrium simply means that the physical properties in which already exists are balanced. Stress can be applied by either changing the pressure or the volume or temperature.
Answer:
Explanation:
He your answer is C. move a bar magnent in and out the wire coil
Answer:
The trucker should drive at a speed of 11 m/s m/s
Explanation:
mass of the small car, m₁ = 795 kg
initial velocity of the small car, u₁ = 35 m/s(due east)
Mass of the truck, m₂ = 3360 kg
Initial velocity of the truck, u₂ = ?
Final velocity, V = u₁ sin37 ( the line between the camera and the collision makes an angle 37° with respect to the north)
According to the law of momentum conservation:
For the x -component
m₁u₁ = (m₁ + m₂)Vsinθ
m₁u₁ = (m₁ + m₂)Vsin37
(795*35) = (795 + 3360)* Vsin37
27825 = 2500.54V
V = 27825/2500.54
V = 11.13 m/s
For the y - component
m₂u₂ = (m₁ + m₂)Vcos37
3360*u₂ = (795+3360)*11.13*cos37
3360*u₂ =36933.02
u₂ = 36933.02/3360
u₂ = 11 m/s
Force = Mass x Acceleration
This is Newton's Second Law of Motion
Anyway,
450 = M x 15
450/15 = M
30kg = M
