Density=mass÷volume
mass=density×volume
mass=2×8=16 g
Answer:
Time to reach maximum height can be obtained from v=u+at
0=20+(−10)t
t=2s
s=ut+0.5at
2
=20(2)+0.5(−10)(2)
2
=20m
Thus, total distance for maximum height is 45 m
s=ut+0.5at
2
45=0+0.5(10)(t ′ )
2
t
′
=3s
Total time= 3+2= 5s
Explanation:
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Answer:
The body systems that work together to maintain the energy Sierra needs are;
The digestive system, the respiratory system, and the circulatory system
Explanation:
Cellular respiration in the body cells require oxygen to produce energy which are used by the muscles and other body cells. Carbon dioxide is also produced and is the build up of carbon dioxide has to be removed from the body as the by product of cellular respiration which is toxic at the cell level
Therefore, the body systems that work together to maintain the energy Sierra needs are;
The digestive system; Takes in the energy containing food and brakes them into chemicals that are transported to the cells for cellular respiration
The respiratory system; Takes in oxygen and removes carbon dioxide from the blood from and to the atmosphere
The circulatory system; Supplies food and oxygen from the digestive and respiratory system to the cells and transports produced carbon dioxide from the cells to the lungs from where it is passed out of the body by th respiratory system.
Answer:
first point at which the image focuses will be closer
Explanation:
given data
converging lens = 10 cm
converging lens = 5 cm
lens = 5 cm
to find out
would the first point at which the image focuses be closer or farther
solution
we apply here lens formula that is
1/f = 1/u + 1/v ......................1
so here
v = f × u / u - f
so here for f = 10 cm v will be
v = 10u / u-10 ..........................2
and
for f = 5 cm v will be
v = 5u / u-5 . ........................3
now if we compare equation 2 and 3 we can say that
v for f = 5 cm is greater than v for f = 10 cm
so here first point at which the image focuses will be closer
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