Answer:
Hello Todoroki here!
Explanation:
True. the ball may hit any part of the body and still be a legal hit.
<em>Hope this helps! ^^</em>
Answer:
Yo, you just kind of answered it yourself. The Electron Cloud Model is the informal way of describing an atomic orbital.
Explanation:
The analogy of the cloud of electrons is really describing the groups of electrons orbiting around said atom. Depending on the atom, there will be many or few electrons orbiting around it on all sides which can resemble an all-encompassing cloud.
Answer:
160 days
Explanation:
Using the equation
rA^3/TA^2 = rB^3/TB^2
Where rA is radius of Moon A = R
TA is Time for moon A complete one orbit = 20 days
rB is radius of Moon B =4R
TB is Time for moon B complete one orbit = ?
Therefore
rA^3/TA^2 = rB^3/TB^2
R^3/20^2 = (4R)^3/TB^2
Cross multiply to solve for TB, then we have
TB^2 × R^3 = (4R)^3 × 20^2
TB^2 × R^3 = 64 × R^3 × 400
TB^2 × R^3 = 25600 × R^3
Divide both sides by R^3
TB^2 = 25600
Square root both sides
TB = sqrt 25600
TB = 160days
initial velocity = 0 = v₍i₎
final velocity = ? = v₍f₎
t = 12 sec
Acceleration = 4m/s²
First we have to find the distance d, for this we use the
formula,
D = v₍i₎t + 1/2at²
D = 0(12) + ½ (4)(12)²
Distance = d = 288 m
Now to find the Vf use the formula,
V₍f₎² = v₍i₎² + 2ad
V₍f₎² = (0)2 + 2(4)(288)
V₍f₎² = 2304
V₍f₎ = 48 m/s
so the velocity at the end of 12 sec is 48 m/s