Complete Question
The cars of a roller-coaster ride have a speed of 19.0 km/h as they pass over the top of the circular track. Neglect any friction and calculate their speed v when they reach the horizontal bottom position. At the top position, the radius of the circular path of their mass centers is 21 m, and all six cars have the same mass.V = -18 m What is v?X km/h
Answer:
Explanation:
Velocity 
Radius 
initial velocity u
Generally the equation for Angle is mathematically given by
Generally
Height of mass
Generally the equation for Work Energy is mathematically given by
Therefore
Answer:
I do not know much but I looked and read, this I learned I hope this is good
The Maglev is a system of train transportation that uses two sets of magnets
working repel one another when matching poles face each other. Here, both magnetic attraction and repulsion are used to move the train car along the guideway.
Explanation:
Brainliest please
Answer:
Explanation:
The first thing we will do is convert the units. Miles per hour to meters per second.
Performing the operations
Now, we will use the acceleration formula
Where v = speed and t = time
Substituting the values of 
Answer:
Q=486.49 KJ/kg
Explanation:
Given that
V= 0.2 m³
At initial condition
P= 2 MPa
T=320 °C
Final condition
P= 2 MPa
T=540°C
From steam table
At P= 2 MPa and T=320 °C
h₁=3070.15 KJ/kg
At P= 2 MPa and T=540°C
h₂=3556.64 KJ/kg
So the heat transfer ,Q=h₂ - h₁
Q= 3556.64 - 3070.15 KJ/kg
Q=486.49 KJ/kg
Performs math operations = calculator
view planets, stars, and objects in space = telescope / measure the length of a piece of paper = ruler / study a petri dish containing bacteria = microscope
