Answer:
Explanation:
each grid corresponding 0.1s⁻¹.
0.2grid unit = 0.2×0.1 =0.02s⁻¹
distance of the star from telescope
d = 1/p
d= 1/0.02= 50 par sec
1par sec = 3.26 light year
1 light year = 9.5×10¹²km
3.26ly=3.084×10¹³km
d= 50×3.084×10¹³=1.55×10¹⁵km
Answer:
The correct answer is singing. See the explanation below, please.
Explanation:
The right cerebral hemisphere deals with functions related to emotion: musical, artistic, imagination, intuition. On the other hand, the left hemisphere is related to language, reasoning, numerical and scientific ability.
<h3><u>Answer;</u></h3>
= 75 %
<h3><u>Explanation</u>;</h3>
To measure efficiency of a machine, compare the work output to work input.
Efficiency = Work output/ work output × 100 %
= 300/400 × 100
= 75 %
Answer:
a) 11.21 m/s
b) 513.89 N
Explanation:
mass of addict = 77 kg
radius of circle= 10 m
velocity of circular motion v =5.6 m/s
a)time period of motion
T= 2πr/v = 2×3.14×10/5.6 = 11.21 sec
b) At the highest point normal reaction force F_N is upward
the gravitational force F_g is downward and centripedal force mv^2/r is upward
F_N= F_g - mv^2/r
= 77*9.81- 77*5.6^2/10
= 513.89 N