Answer:
A: 456
B: Because the shoes press down on the mud and get taken in
C:643
D:Because e = mc2 divided by 3 equals a = 3 equals 4.321a
Explanation:
Answer:
Action-at-a-Distance Forces. Frictional Force. Gravitational Force. Tension Force ... The force of gravity on earth is always equal to the weight of the object as ... The friction force is the force exerted by a surface as an object moves across it or ... The force of air resistance is often observed to oppose the motion of an object
Explanation:
Answer:
v = 1.03 m / s
Explanation:
For this case we must use energy conservation. Let's define an energy system at the lowest point of the movement.
Initial energy lowest point
Em₀ = K = ½ m v²
Final energy highest point
= U = m g y
Energy is conserved
Em₀ =
½ m v² = m g y
v = √ (2g y)
Let's use trigonometry to find the height
cos 20 = L’/ L
L’= L cos 20
The height of the displacement is the total length minus L ’
y = L - L’
y = L - L cos 20
y = L (1- cos 20)
Let's replace
v = √ (2g L (1-cos 20))
Let's calculate
v =√(2 9.8 0.90 (1- cos 20))
v = 1.03 m / s
Answer:
Carbon since the others are compounds of other elements
Properties of wire, and things you can
do to it to make its resistance high:
-- Thickness. Make it as thin as a hair on a mosquito's leg.
-- Length. Make it long enough to go around the Earth.
-- Resistivity of the material. Make the wire out of glass or wood.