Answer:
V = 42187 m/s = 42.18 km/s
Explanation:
given data:
mass of sun is
radius of earth orbit is
minimum speed can be determined by using following formula
}
where G is
Plugging all value to get desired value
V = 42187 m/s = 42.18 km/s
Answer:
a) , b)
Explanation:
The magnitude of torque is a form of moment, that is, a product of force and lever arm (distance), and force is the product of mass and acceleration for rotating systems with constant mass. That is:
Where is the angular acceleration, which is constant as torque is constant. Angular deceleration experimented by the unpowered flywheel is:
Now, angular velocities of the unpowered flywheel at 50 seconds and 100 seconds are, respectively:
a) t = 50 s.
b) t = 100 s.
Given that friction is of reactive nature. Frictional torque works on the unpowered flywheel until angular velocity is reduced to zero, whose instant is:
Since , then the angular velocity is equal to zero. Therefore:
It is true that cows, grain, and land were
more difficult to move from place to place
<span>Coins were developed as a medium of exchange
because they are easy and more convenient in negotiating and purchasing. For
example, the British pound, the yen, and the euro are examples of currencies.
It is letter A. Currencies are the money used in a certain country in their
everyday purchase of goods inside the country. When a person goes to other
country and exchange his or her money for another money that can be used inside
the country he is now currently in, then that is exchanging rates. Tariffs are the taxes payed by a certain
company of exporting or importing industry to transport it from one place or
country to another country.</span>
Its C. a decrease in the radius and an increase in the tangential speed ,I'm 100% sure
Hey there <span>kristenklimasz!
</span>
Question:
<span>Dinosaurs emerged during what time period?
</span>
Answer:
Dinosaurs lived between 230 and 65 million years ago during that time it was called Mesozoic Era this was way before the first homo sapiens appeared there is 3 periods in the Mesozoic Era. Triassic, Jurassic, and Cretaceous
So your answer is
<span>C) Mesozoic Era
</span>
Hope this helps!
-Jayden