Answer:
True
Explanation:
Limestone is a carbonate chemical sedimentary rock often chemically called calcium carbonate.
The mineral calcium carbonate makes up the framework of this rock that has become the staple material used for cement production.
Chemically, the formula is given as CaCO₃. The rock accumulates from the a rich deposit of calcite, which is the mineral that is made up of calcium carbonate to form the limestone.
CaCO₃ - Calcite - Limestone
compound mineral rock
Limestone is a rock and the compound it is made up of is calcium carbonate. In some cases, a Ca-Mg carbonate occurs with limestone and it is called a dolomite.
Answer:
Ethan's tangential speed is twice as Rebecca's.
Explanation:
Let
be the distance from the center of the platform to Rebecca's horse,
Rebecca's tangential speed,
the Ethan's tangential speed and
the merry-go-round angular speed. The distance from the center of the platform to Ethan's horse is
. The angular speed is related to the tangential speed by the equation:

Since the angular speed is the same for Ethan and Rebecca, we have that:

Now, solving for
we get:

It means that Ethan's tangential speed is twice as Rebecca's.
Answer: L.M = 34.69
Area of the bar = 25835m^2
Explanation: To design a bar that can withstand temperature at 773K for 10years, we need to calculate and know:
1) the Larson Miller value
2) rupture time
3) creep rate
4) stress and load.
Please find the attached file for the solution
Answer:
GPE = 388.08 Joules.
Explanation:
Given the following data;
Mass = 0.550kg
Speed = 335 m/s
Height = 72 meters
We know that acceleration due to gravity, g is equal to 9.8 m/s²
To find the gravitational potential energy;
Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.
Mathematically, gravitational potential energy is given by the formula;

Where;
G.P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
Substituting into the formula, we have;

GPE = 388.08 Joules.