If coal was our Primary source it would help the world but population would be higher and it can damage animals,people will be able to drive calm without problems ithe world
Answer:
B. 4 m/s
Explanation:
v=d/t
Running for 300 m at 3 m/s takes 100 seconds and running at 300 m at 6 m/s takes 50 seconds. 100 s + 50 s = 150 s (total time). Total distance is 600 m, so 600 m/ 150 s = 4 m/s.
Answer:
True
Explanation:
It is true that the real definition of lenz's law in magnetism is the current is induced in the closed conducting loop in such a direction that the magnetic field induced by this current opposes the change in the flux through the loop.
This means that induced current opposes the very cause that produces it.
Answer:
1327 kg
Explanation:
So the net force exerted on the wagon would be the sum of forces from 2 horses subtracted by friction force
This force results in an acceleration of a = 1.3 m/s2. We can use Newton's 2nd law to calculate the mass of the wagon
ASSUMING that the substance is a gas . . .
It all depends on HOW the pressure was increased.
-- IF the gas was left in the same container, and the pressure was increased by heating the container, then the volume hasn't changed. It's still the inside volume of the container.
-- IF the pressure was increased by stuffing all of the gas into a smaller container, then the new volume is the volume of the smaller container.
No matter what the mass or temperature of the gas is, it always expands to fill whatever container you're keeping it in.
