Answer:
yes
Explanation:
when we throw a ball upwards, it will eventually come back to us because of force.
<u>MOMENTUM IS CONSERVED</u> (law of Nature)
That means that momentum can move from one object to another object, but it's never created or destroyed. The amount of momentum AFTER something is the same as it was BEFORE.
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<u>Before:</u>
(ball momentum = 12), (pin momentum = 0)
Ball + Pin = 12 unts
<u></u>
<u>After:</u>
Momentum is conserved.
Ball + Pin still has to be 12 units
Ball = 8 units
So Pin has to be the other <em>4 units</em>.
Answer:
field B = µ₀c I / 2πr
The field in the xy plane due to the fact that the two wires are perpendicular to the plane Bx and By are everywhere 0 on the plane.
a) Midway between, the Bz components cancel, so <0, 0, 0> T
b) Bz = µ₀ x I / 2πa + µ₀ x I / 2π(3a) = (µ₀ x I / 2π)(1/a + 1/3a)
Bz = (µ₀ x I / 2πr)(3/3a + 1/3a) = (µ₀x I / 2πr)(4 / 3a) = 2µ₀ x I / 3πa
c) By symmetry, Bz = -2µ₀ x I / 3πa (that is, down into the plane)
Type of pulley that has additional numbers of ropes that help to increase mechanical advantage is a: C. Movable pulley
Answer
given,
angle of pushing =19°
frequency = 10 rpm
time = 9 sec
radius of disk = 2.3 m
mass of merry-go-round = 750 Kg
Rachel mass = m₁ = 48 Kg
Tayler mass = m₂ = 46 Kg
moment of inertial
I = 2481.01 Kg.m²
ω = 10 rpm =
ω = 1.05 rad/s
ω₀ = 0
α = 0.117 rad/s²
we know,
T = I α
F cos 16° = 2481.01 x 0.117
F = 301.98 N
Work done =
=
=
W =1367.66 J