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Sedaia [141]
3 years ago
14

Which activity directly converts energy from the Sun into chemical energy?

Physics
2 answers:
Llana [10]3 years ago
8 0
Photosynthesis.
  green plants convert  sunlight  to chemical energy.
Nadusha1986 [10]3 years ago
6 0
Hello there i just did this assignment and i would say It is C my friend.
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You’re still in a redecorating mood and want to move a 35kg bookcase to a different place in the living room. You exert 58 N on
CaHeK987 [17]

Answer: 0.16

Explanation:

Newton's second law states that the resultant of the forces exerted on the bookcase is equal to the product between the mass (m) and the acceleration (a):

F-F_f = ma

where

F = 58 N is the force applied

Ff is the frictional force

Substituting, we find the frictional force

F_f = F-ma=58 N-(35 kg)(0.12 m/s^2)=53.8 N

The frictional force has the form:

F_f = \mu mg

where \mu is the coefficient of kinetic friction. Re-arranging the formula, we can find the coefficient:

\mu=\frac{F_f}{mg}=\frac{53.8 N}{(35 kg)(9.8 m/s^2)}=0.16

4 0
4 years ago
What is the logical oreder for these words : verse, interlude,verse,refrain, introduction,refrain,coda,refrain,verse
Nikolay [14]

Sorry to say but I know that t(e introduction is first and the coda is last


3 0
4 years ago
Please help this is really important thanks
Juliette [100K]
1. Giga is the largest
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6 0
3 years ago
The terminal velocity of a person falling in air depends upon the weight and the area of the person facing the fluid. Find the t
Serga [27]

Answer:

115 m/s, 414 km/hr

Explanation:

There are two forces acting on a skydiver: gravity and air resistance (drag).  At terminal velocity, the two forces are equal and opposite.

∑F = ma

D − mg = 0

D = mg

Drag force is defined as:

D = ½ ρ v² C A

where ρ is the fluid density,

v is the velocity,

C is the drag coefficient,

and A is the cross sectional surface area.

Substituting and solving for v:

½ ρ v² C A = mg

v² = 2mg / (ρCA)

v = √(2mg / (ρCA))

We're given values for m and A, and we know the value of g.  We need to look up ρ and C.

Density of air depends on pressure and temperature (which vary with elevation), but we can estimate ρ ≈ 1.21 kg/m³.

For a skydiver falling headfirst, C ≈ 0.7.

Substituting all values:

v = √(2 × 80.0 kg × 9.8 m/s² / (1.21 kg/m³ × 0.7 × 0.140 m²))

v = 115 m/s

v = 115 m/s × (1 km / 1000 m) × (3600 s / hr)

v = 414 km/hr

4 0
3 years ago
_____ is the frictional force needed to slow down an object in motion
tekilochka [14]

Answer

gravity

Explanation:

4 0
4 years ago
Read 2 more answers
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