Answer:
<u>A.</u>
Explanation:
A sedentary lifestyle is someone that does not participate in physical activities. Leslie is not active and plays video games instead.
Answer:
It should be mentioned that an efficient way to work this vector addition problem is with the cosine law for general triangles (and since
a
,
b
and
r
from an isosecles triangle, the angles are easy to figure). However, in the interest of reinforcing the usual systematic approach to vector addition, we note that the angle
b
makes with the +x axis is 30
0
+105
0
=135
0
(a) The x component of
r
x
=(10.0m)cos30
0
+(10.0m)cos135
0
=1.59m
(b) the y component of
r
is r
y
=(10.0m)sin135
0
= 12.1 m.
(c) the magnitude of
r
is r = ∣
r
∣=
(1.59m)
2
+(12.1m)
2
=12.2m
(d) The angle between
r
and the +x direction is tan
−1
[(12.1m)/(1.59m)]=82.5
0
Explanation:
Answer:
B
Explanation:
<u>for A,</u> transfer means energy change, from one form to another but remains unchanged.
But if we see, for energy lost to surroundings may be changed l.
<u>F</u><u>o</u><u>r</u><u> </u><u>B</u><u> </u>, Dissipation is the process by which energy is done against dissipative forces, eg air resistance, viscosity.
<u>F</u><u>o</u><u>r</u><u> </u><u>C</u><u>,</u><u> </u> Not that every energy is dissipated, like kinetic and potential energy. But some forms of energy are emitted like heat energy.
Answer:
73.152cm
Explanation:
We have been given:
0.8yards of rain
Problem, convert to cm = ?
Solution:
The problem deals with the conversion from one length dimension to another.
So:
1 yard = 91.44 cm
So 0.8 yards = 0.8 x 9.44 = 73.152cm
The solution to this problem is 73.152cm
B. A pot of boiling water represents a system that is completely open.