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svetoff [14.1K]

3 years ago

7

AP physics here! Please help me answer only this question and then explain how you got your answer. After that, I will do the re

st of the questions by myself using your explanation. Come here only if you know AP physics.

1 answer:

Aleksandr [31]3 years ago

5 0

Answer:

displacement: 0

Distance: 30

Explanation:

lol, i asked my brother, he's also in 10th grade

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How does the speed of light change as the index of refraction increases?.

Maksim231197 [3]

$\huge{\green}\fcolorbox{blue}{cyan}{\bf{\underline{\red{\color{red}Answer}}}}$

So as the index of refraction value increases, the optical density increases, and the speed of light in that material decreases.

8 0

2 years ago

A projectile of mass 6.8 kg kg is shot horizontally with an initial speed of 14.5 m/s from a height of 26.7 m above a flat deser

sleet_krkn [62]

Answer:

Explanation:

Given

mass of projectile $m=6.8\ kg$

initial horizontal speed $u_x=14.5\ m/s$

height $h=26.7\ m$

Considering vertical motion

velocity gained by projectile during 26.7 m motion

$v^2-u^2=2 as$

v=final velocity

u=initial velocity

a=acceleration

s=displacement

$v^2-(0)^2=2\times (9.8)\times (26.7)$

$v=\sqrt{523.32}$

$v=22.87\ m/s$

Horizontal velocity will remain same as there is no acceleration

final velocity $v_{net}=\sqrt{(v)^2+(u_x)^2}$

$v_{net}=\sqrt{733.57}=27.08\ m/s$

Initial kinetic Energy $K_i=\frac{1}{2}mu_x^2$

$K_i=\frac{1}{2}\times 6.8\times (14.5)^2=714.85\ J$

Final Kinetic Energy $K_f=\frac{1}{2}mv_{net}^2$

$K_f=\frac{1}{2}\times 6.8\times (27.08)^2$

$K_f=2493.30\ J$

Work done by all the force is equal to change in kinetic Energy of object

Work done by gravity is $W_g$

$W_g=\Delta K$

$W_g=2493.30-714.85=1778.45\ J$

8 0

3 years ago

1.<br>The force of gravity on an object is<br>the measure of the object's<br>mass<br>weight

algol13

Answer:

Weight

Explanation:

5 0

3 years ago

To Calculate Velocity and Average Velocity you can use the same formula as both.

Elanso [62]

Answer:

I believe it's True! Brainliest??

Explanation: Hope you have a great day :)

4 0

3 years ago

When sugar is burned, water vapor and carbon dioxide are produced. A sugar molecule has a specific number of carbon, hydrogen, a

Anuta_ua [19.1K]

Answer:

Number of carbon, hydrogen, and oxygen atoms in sugar:

C: 12
H: 22
O: 11

Explanation:

1) Given balanced chemical equation:

Sugar(s) + 12O₂(g) → 11H₂O(g) + 12CO₂(g)

2) Mass conservation law: in a chemical reaction, the atoms are not created nor destroyed; they recombine to form new substances, so the number of atoms of each kind in the reactants is equal to the number of atoms of the same kind in the products.

3) Balance.

-----------------------------------------------------------------------------------------------------

Atom Products = Reactants

-----------------------------------------------------------------------------------------------------

C 12CO₂ ⇒ 12 = 12 in sugar

-----------------------------------------------------------------------------------------------------

H 11H₂O ⇒ 11 × 2 = 22 = 22 in sugar

-----------------------------------------------------------------------------------------------------

O 12CO₂ ⇒ 12 × 2 = 24 12 × 2 = 24 in O₂ + x in sugar

11H₂O ⇒ 11

----------------------------- --------------------------------------------------

24 + 11 = 35 = 24 + x

----------------------------------------------------------------------------------------------------

Solve for x: 35 = 24 + x ⇒ x = 35 - 24 = 11 ∴ 11 O atoms in sugar

Conclusion:

Number of carbon, hydrogen, and oxygen atoms in sugar:

C: 12
H: 22
O: 11

6 0

4 years ago

Read 2 more answers