Answer:
4 times
Explanation:
As we know that the energy of a wave is directly proportional to the square of the amplitude of the wave,
Here, the amplitude of the wave A is twice as compared to B.
So, the energy of wave A is 4 times the energy of wave B.
False.
As temperature increases the more the electrons begin to vibrate more, as it decreases they vibrate less.
Heat transfer is affected by color.
Answer:
Option a
Explanation:
Ocean lithosphere that is 10 million years old is cold enough to be denser than the
asthenosphere so it can sink down into or through the asthenosphere
Answer:
21.42m/S
Explanation:
Hello!
To solve this problem we must perform the following steps.
1. Find the distance traveled from until the driver reacts, this is achieved using the equation for constant speed movement.
X1=VT
where
x= distance traveled
v=initial speed
T=time=0.75s
X1=0.75Vo
we must take into account that the total distance is the sum of the distance at which the pilot reacts (x1) and when it starts to decelerate (x2)
39=0.75Vo+X2
X2=39-0.75Vo
2. Now we use the equation that defines a movement with constant acceleration.

where
Vf = final speed=0m/s
Vo = Initial speed
A = acceleration
=-10m/s2
X2 = displacement
now we use the ecuation of step 1

solving

Now we solve the quadratic equation and find the value of Vo
the solutions are 21.42m/S, -36.41m/S
as the speed must be positive we conclude that the answer is 21.42m/S