Martino travels from her house to her moms office building from there she walks to school after school she walks to the library
and then to a friends house before finally ending back at home find Martinez total displacement?
A) 0 miles
B) 0.4 miles
C) 1 mile
D) 3.15 miles
A) 0 miles
B) 0.4 miles
C) 1 mile
D) 3.15 miles
2 answers:
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Answer:
(a) 1, average velocity = -65.6 m/s
2, average velocity = -64.8 m/s
3, average velocity = -64.16 m/s
(b) The instantaneous velocity is -96 m/s
Explanation:
(a)
Average velocity is given by;
(1)
(2)
(3)
b. y = 235 - 16t²
The instantaneous velocity is given by;
v = dy /dt
dy / dt = -32t
when t = 3 s
v = -32(3)
v = -96 m/s
Answer:
d' = d /2
Explanation:
Given that
Distance = d
Voltage =V
We know that energy in capacitor given as
If energy become double U' = 2 U then d'
2 d ' = d
d' = d /2
So the distance between plates will be half on initial distance.
Answer:
Polarizing angle,
Given:
Critical angle,
Solution:
Now, in Total Internal Reflection (TIR), the critical angle for cubic zirconia is given by:
(1)
where
= refractive index of zirconia
From eqn (1):
Now, the angle of polarization is given by:
tan
Therefore,