Answer:
La longitud del camino recorrido es de 25.9 [m]
Explanation:
Se reemplaza el valor de tiempo en segundos en la ecuación dada de desplazamiento
x=10+20*(3) - 4.9*(3)^2
x= 25.9 [metros]
Answer:
the correct affirmation is the 3
Explanation:
Let's analyze the problem with Newton's second law before looking at the claims.
X axis parallel to the plane, positive down
F -fr + Wₓ = ma
Y Axis perpendicular to the plane
N -Wy = 0
With trigonometry
Wₓ = W sin θ
Wy = w cos θ
Let's multiply by the displacement along the plane, to relate to the work, which has as expression W = F d
F d -fr d + Wx d = ma d
Push W₁ = Fd
frictional force W₂ = -fr d
gravity W₃ = Wx d
W₁ + W₃ -W₂ = m a d
Analysis affirmations:
R1) false. The work of gravity is the subtraction
R2) false. Each force contributes according to its magnitude
R3) true. In the equation we see that, if the acceleration is zero, W2 = W1 + W3
R4) False. It equals the difference
the correct affirmation is the 3
I'm not really sure if it's completely right but I was taught that light can travel without a medium because light is composed of quanta called photons, and since it is a property of photons that they don't require a medium of transmission
( sorry if that doesn't make sense )
Answer:
Attractive Property – Magnet
Explanation:
attracts ferromagnetic materials like iron, cobalt, and nickel. Repulsive Properties – Like magnetic poles repel each other and unlike magnetic poles attract each other. Directive Property – A freely suspended magnet always points in a north-south direction.
We have that
a) L1 = 0.0035600 km = We have this number has 5 significant figures
L2 = 136500 mm =We have this number has 3 significant figures
b) L1 = 0.0035600 km=3.65m
L2 = 136500 mm=136.5m
c) L1 is more accurate
d) L2 is more Precise
From the question we are told
Consider the following two values for measurements of length:
L1 = 0.0035600 km
L2 = 136500 mm
a)
Generally
L1 = 0.0035600 km = We have this number has 5 significant figures
L2 = 136500 mm =We have this number has 3 significant figures
b)
Express each number in proper scientific notation after converting the units to “meters”
L1 = 0.0035600 km=3.65m
L2 = 136500 mm=136.5m
c)
Which of the two is more accurate
Generally
We define accuracy in measurement as the closes of a value measured to the actual value of
Therefore
L_1 is more accurate
d)
We define Precision in measurement as how closely the reoccurring results are close
Therefore
L_2 is more Precise
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