Science. Groups and periods are two ways of categorizing elements on the periodic table. ... Periods are horizontal rows (across) the periodic table, while groups are vertical columns (down) the table. Atomic number increases both as you move down a group or across a period
Answer:
Explanation:
At the bottom of the pipe :
= Normal force acting in upward direction
= mass of the ball
= weight of the ball acting in downward direction = mg
= speed of the ball at the bottom
= radius of curvature
Force equation for the motion of ball is given as
Answer:
29.4m/s
Explanation:
Given parameters:
Time = 3s
Unknown:
Average velocity = ?
Solution:
To solve this problem, we use the expression below:
v = u + gt
v is the average velocity
u is the initial velocity = 0m/s
g is the acceleration due to gravity = 9.8m/s²
t is the time
So;
v = 0 + (9.8 x 3) = 29.4m/s
Explanation:
Given:
= 10 rev/s =
= 15 rev/s =
= 60 rev =
a) the angular acceleration is given by
b)
c)
d)