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Given that roller coaster is of tear drop shape
So the speed at the top is given as
v = 11 m/s
acceleration at the top is given as
a = 2.9 g
now we know the formula of centripetal acceleration as
PART B)
now if the total mass is given as
m = 2821 kg
now the Net force will be given as
Now by force equation we will have
PART C)
If the radius of the loop is 14 m
speed is given by same v = 11 m/s
now the acceleration is given as
PART D)
Now for normal force at the top is given by force equation
so here normal force is coming with negative sign so it will not be possible to complete the circular path in this case
So normal force will be ZERO
Answer:
Explanation:
An isentropic process is one that does not change the entropy of the system. A reversible of the universe, and it is reversible because of that. Real processes increase the entropy of the universe, so trying to reverse them would decrease the entropy of the universe, which is impossible, so they are irreversible.
The Carnot cycle has 4 phases:
-Isotermal expansion of gas. In this process it takes heat from a hot source. It is a reversible process, but not isentropic.
-Adiabatic expansion. This one is isentropic, the entropy of the gas remains constant and it doesn't interact with the surroundings. The gas expands not by its own, but the machine makes it expand (it pulls on the gas). The gas cools down.
-Isotermal compression. Reversible but not adiabatic. The gas exchanges heat with the cold source, reducing its volume.
-Adiabatic compression. Adiabatic and isentropic. The machine compresses the gas, causing it to heat up.
Q = I t = 30 x 120 = 3600 C
A) Measure the pH of different household chemicals
Explanation:
To demonstrate a chemical property using an experiment, measuring the pH of different household chemicals will be the best way. The pH is the degree of hydrogen or hydroxyl ion concentration in a solution.
- Chemical properties tell us about what a substance can do.
- It shows if a substance will react with other substances or not.
- Examples are flammability, rusting of iron, precipitation, decomposition of water by electric current e.t.c.
- Measuring the pH is a chemical property determination procedure.
- The pH points to the degree of acidity or alkalinity of a solution.
Learn more:
Chemical change brainly.com/question/9388643
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