The answer is true to your question
There is no displacement. The frog is back where it began.
Answer: 65mph, 75mph
Explanation:
Let us assume x to be the speed of the slower train, in mph (miles per hour).
Then the speed of the other train is (x+10) mph, according to the question.
We then would have an equation like this
1.6x + 1.6(x+10) = 224.
This is because, the first addend in the left side is the distance covered by the slower train.
The second addend in the left side is the distance covered by the faster train.
The sum is 224 miles, because they together covered all the distance to the moment when they meet each other.
1.6x + 1.6x + 16 = 224
3.2x + 16 = 224
3.2x = 224 - 16
3 2x = 208
x = 208/3.2
x = 65
Thus the speed of the slower train is 65mph, and that of the other train is 65 + 10 = 75mph
Heredity is passing on physical traits to your offspring and if you had parents that had a disease it can effect you that can later affect your physical fitness
Answer:
The ratio of the forces is F2/F1 = 1.86
Explanation:
From Newton's second law applied to circular motion, the total force F acting on a body in circular motion is given by
F = mv²/r
Where
m = mass of the body undergoing circular motion
v = linear velocity = ω×r
ω = angular velocity
r = radius of the circular path through which the force acts
So
F = m(ω×r)²/r = mω²×r
Given 2 angular speeds ω1 = 439re/min = 439×2π/60 rad/s = 46 rad/s and
ω2 = 602rev/min = 602×2π/60 rad/s = 63 rad/s
Required to calculate the ratio F2/F1
The mass m and radius r is the same for both forces, so F is dependent on the angular speed
So F2/F1 = ω2²/ω1² = (ω2/ω1)²
F2/F1 = (63/46)² = 1.86