The amount of energy in the universe is remaining constant .
So , option (D) is right ..
Answer: C)The yellow car was faster. Yellow traveled at a speed of 50 mph while green was traveling at an average of 40 mph.
Explanation:
The speed of each car is defined as:
where d is the distance traveled by the car and t is the time taken.
For the yellow car, d=400 mi and t=8 h, so its speed is
For the green car, d=400 mi and t=10 h, so its speed is
So, the correct choice is
C)The yellow car was faster. Yellow traveled at a speed of 50 mph while green was traveling at an average of 40 mph.
Answer:
The frequencies of the first four harmonics are 248 Hz, 496 Hz, 744 Hz, and 992 Hz
Explanation:
Given;
fundamental frequency, f₀ = 248 Hz
Frequency of the nth harmonic = n x fundamental frequency
First harmonic, f₁ = 1 x f₀ = 248 Hz
Second harmonic;
2f₀ = 2 x 248 Hz = 496 Hz
Third harmonic
3f₀ = 3 x 248 Hz = 744 Hz
Fourth harmonic
4f₀ = 4 x 248 Hz = 992 Hz
Therefore, the frequencies of the first four harmonics are 248 Hz, 496 Hz, 744 Hz, and 992 Hz
Answer:
It will have the same KE ( 450 J ) just before it hits the ground. The GPE transferred to KE is the same in both cases and the original KE is the same in both cases so the total will be the same.
The one thrown sideways will take longer to get to the ground but it will have the same velocity ( and therefore KE ) as the thrown down stone.
Explanation:
Answer:
momentum before: 100kgm/s
momentum after: 20kgm/s
Explanation:
initial velocity: 10
final velocity: 2
p=mv
before: 10kg×10m/s
after:10kg×2m/s
I'm not 100% sure btw
