Answer:
D
Explanation:
correct me if I'm wrong on your answer and it's the right answer from my son
Galileo's observations of Jupiter's orbiting moons showed that there were other centers of motion in the universe. Galileo's most crucial observation was the observation of Venus in different phases, which directly supported the idea that objects orbit the Sun rather than Earth.
Answer:
A) Car B has more energy than Car A
Explanation:
The kinetic energy of a car is given by:
where
m is the mass of the car
v is its speed.
In this problem, we know that:
- The speed of car B is greater than the speed of car A
- We assume that the mass of the two cars is the same
Therefore, since the kinetic energy is proportional to the square of the speed, this means that car B has greater kinetic energy than car A.
Answer:
The angle with the positive x axis 61.31°
Explanation:
It is given that, a vector in the x-y plane has a magnitude of 25 m and x component of 12 m.
x component of the vector, base = 12 m
Magnitude of hypotenuse, H = 25 m
We need to find the angle with the positive x axis. Let it is given by θ such that :
θ = 61.31°
So, the angle with the positive x axis 61.31°. Hence, this is the required solution.