The planet closest to the sun that has a dense iron core and no moons is : B. mercury
From the options above, only mercury and venus are the one that doesn't have moons. Between the two, mercury is the one that has a dense iron core
hope this helps
Whenever an object is falling, its potential energy
is decreasing and its kinetic energy is increasing.
Olivia's potential energy is decreasing and her kinetic energy
is increasing as she moves toward the right side of the picture,
all the way from W, through X, to the bottom of the arc.
Amplitude of vibration is the maximum displacement of an object that has been moved from one point to another due to a vibrating body or its wave measured from an equilibrium position. In short, it is the distance of the object that moved from the vibration.
It is difficult for astronomers to find object like planets and asteroids because it takes a lot of time to verify the objects locations and what surrounds a certain object in order to prove and be precise of its location
Answer:
m = 20[kg]
Explanation:
This problem can be solved, using kinematic equations and then applying Newton's second law. First we must find the acceleration and then replace it in the equation of Newton's second law.
Initial data:
Vo = initial velocity = 0 [m/s]
t = 3[s]
T- F = -m*a
T - m*g = m*a
We can assume a value for tension T equal to 196 [N].
Note: For this problem it is important to assume a tension value, otherwise, it is impossible to determine the value of mass m, in Newton's second law equation.