Answer:
Renewable Resource Hydropower is renewed by the Earth's hydrologic cycle. Water has also been considered renewable, but overpumping of groundwater is depleting aquifers, and pollution threatens the use of many water resources, showing that the consequences of resource use are not always simple depletion.For low-mass stars (left hand side), after the helium has fused into carbon, the core collapses again. As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. The core remains as a white dwarf and eventually cools to become a black dwarf. inexpensive compared to coal ... o Two types of coal—low rank (pollutes more), and high rank.
Explanation:
(a) Centripetal: , tangential:
The radius of the track (which is the distance of the car from the centre of the circular path) is
r = 0.30 km = 300 m
The angular acceleration is
We can find the angular velocity of the car after half of a lap using the equivalent of the SUVAT equation for rotational motions:
where
since the car starts from rest
is the angular displacement after half a lap
Solving for ,
Now we can find the centripetal acceleration with the formula:
while the tangential acceleration is simply given by
(b) The mass of the car is not given, so it is not possible to find the forces.
Answer:
Inertia : a property of matter by which it continue in its existing state of rest or uniform motion in a straight line, unless that state is changed by external force.
HOPE ITS HELPS!!
<u>D.</u>
For every action ther is an equal and opposite reaction.
equal in force, opposite in direction