Answer:
Energy transfer takes place when energy moves from one place to another. Energy can move from one object to another, like when the energy from your moving foot is transferred to a soccer ball, or energy can change from one form to another.This transfer happens in three different ways—by conduction within solids, by the flow of liquid or gas (convection), and by radiation, which can travel across space. Even when a system is isolated (such as Earth in space), energy is continually being transferred into and out of it by radiation.Fuel cells (Chemical energy → Electrical energy) Battery (electricity) (Chemical energy → Electrical energy) Fire (Chemical energy → Heat and Light) Electric lamp (Electrical energy → Heat and Light)
Answer:
The minimum difference between the lengths of the two tubes should be 0.385 meters.
Explanation:
As we known that for any two waves to arrive in phase at any point the difference in the path traveled by the waves should be an integral multiple of the wavelength of the wave.
Mathematically we can write:
For the given wave we have
Applying values we get
Thus the minimum difference in the lengths of the tubes can be obtained by putting the value of n = 1
The answer is the ear drum. Hope that helps!
By law of conservation of momentum:
Summation of momentum before collision = Summation of momentum after collision
Momentum = mass*velocity
If v and u represents initial and final velocities and assuming that the bred marble was at rest before collision;
m1u1+m2u2 = m1v1+m2v2
But u2 = 0
Then,
m1u1 = m1v1+m2v2
u1 = (m1v1+m2v2)/m1
Where;
u1 = Initial velocity of red marble before collision
m1 = mass of blue marble = 0.1 kg
v1 = Final velocity of red marble = 10 m/s
v2 = Final velocity of blue marble = 15 m/s
m2 = mass of blue marble = 70 g = 0.07 kg
Substituting;
u1 = (0.1*10+0.07*15)/0.1 = 20.5 m/s
Therefore, red marble original velocity before collision was 20.5 m/s.
Other countries have reacted the same way as the United States has.