7 In an experiment, six people at different places around the Earth drop an apple at the same time. Which apples will fall to th
1 answer:
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Answer:
a = 1 m/s² and
Explanation:
The first two parts can be seen in attachment
We use Newton's second law on each axis
Y axis
Ty - W = 0
Ty = w
X axis
Tx = m a
With trigonometry we find the components of tension
Sin θ = Ty / T
Ty = T sin θ
Cos θ = Tx / T
Tx = T cos θ
We calculate the acceleration with kinematics
Vf = Vo + a t
a = (Vf -Vo) / t
a = (20 -10) / 10
a = 1 m/s²
We substitute in Newton's equations
T Sin θ = mg
T cos θ = ma
We divide the two equations
Tan θ = g / a
θ = tan⁻¹ (g / a)
θ = tan⁻¹ (9.8 / 1)
θ = 84º
We see that in the expression of the angle the mass does not appear therefore you should not change the angle
Answer:
for copper potential difference is 2.4871 × V
for silver potential difference is 2.1256 × V
Explanation:
given data
diameter D = 1.628 mm = 0.001628 m
current = 14.0 mA = 0.0140 A
length L = 2.15 m
to find out
potential difference
solution
we consider here
resistivity of silver = 1.47 × ohm-m
resistivity of copper = 1.72 × ohm-m
so we apply here resistance formula that is
Resistance = ρ × L / A ...............1
so here area A = πr² = π(0.001628 /2)² = 2.0816 × m²
for copper Resistance = ρ × L / A
Resistance = 1.72 × × 2.15 / 2.0816 ×
Resistance = 1.7765 × ohm
for silver Resistance = ρ × L / A
Resistance = 1.47 × × 2.15 / 2.0816 ×
Resistance = 1.5183 × ohm
so
potential difference is calculated as
for copper potential difference = current × resistance
potential difference = 0.0140 ×1.7765 ×
potential difference = 2.4871 × V
for silver potential difference = current × resistance
potential difference = 0.0140 × 1.5183 ×
potential difference = 2.1256 × V