Answer:
a. 2.645 * 10^7 m/s^2
b. 2.645 * 10^4 N
Explanation:
Parameters given:
Velocity of rod = 2010m/s
Length of rod = 15.3cm = 0.153m
Mass of object placed at the end of the rod = 1g = 0.001kg
a. Centripetal acceleration is given as:
a = (v*v)/r
Where v = velocity
r = radius of curvature.
The radius of curvature in this case is equal to the length of the rod, since the rod makes the circular path of the motion.
Hence, centripetal acceleration at the end of the rod:
a = (2010*2010)/(0.153)
a = 26432156.86 m/s^2 = 2.64 * 10^7 m/s
b. The force needed to hold the object at the end of the rod is equal to the centripetal force at the end of the rod. Centripetal force is given as:
F = ma = (m*v*v)/r
Where a = centripetal acceleration
F = 0.001 * 2.64 * 10^7
F = 2.64 * 10^4N
Answer:
The velocity ratio of the wedge is 0.15
Explanation:
Use the following formula to calculate the velocity ratio
Velocity Ratio = Distance Moved by effort / Distance moved by Load
Where
Distance Moved by effort = 3cm
Distance moved by Load = 20 cm
Placing values in the formula
Velocity Ratio = 3cm / 20 cm
Velocity Ratio = 0.15
The main factor that determines the stages a star will follow after the main sequence is the star's mass or size.
<h3>What is main sequence?</h3>
The main sequence of a star is a stage in the life cycle of that star. During the main sequence ( also called the zero age ), the star generates energy by nuclear fusion of Hydrogen atoms at the core of the star into Helium atoms. Eventually, the star runs out of hydrogen atoms, which concludes the main sequence. What happens afterward depends on the size of the star.
<h3>Low mass stars </h3>
For low-mass stars ( stars that are less than 0.1 times the mass of the sun), they slowly collapse into white dwarfs. These stars do not get hot enough to fuse helium atoms, instead hydrogen fusion continues until the whole star is filled with helium and slowly collapses into a white dwarf while it grows dimmer and colder.
<h3>Medium-sized stars</h3>
Medium-sized stars ( stars about 0.6 - 10 times the mass of our sun) become red giants. Stars similar in size to our sun are hot enough to fuse helium atoms, so towards the end of the main sequence it starts to fuse helium atoms, forming heavier elements like carbon and oxygen. The heavier elements move to the star's core due to gravity, while lighter elements like hydrogen form a shell around the core. This causes the sun to then grow in size, forming a red giant.
<h3>Large stars</h3>
Massive stars ( greater than 10 times the mass of the sun) and super-massive stars ( more than 40 times the mass of the sun ) end up exploding into a supernova , while the dense core collapses into a neutron star or a black hole.
To know more about main sequence, check out;
brainly.com/question/18141359
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"The pattern of electrons in their atoms" is the one among the following choices given in the question that <span>causes nickel and certain other metals to be magnetic. The correct option among all the options that are given in the question is the second option or option "B". I hope that the answer has helped you.</span>
