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3 years ago

Which of the following planets were the ancient Greeks able to see and make careful observations of?

Physics

1 answer:

zepelin [54]3 years ago

5 0

Answer:

Neptune and Uranus

Explanation:

Did a quiz on this not to long ago

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g An airplane is flying through a thundercloud at a height of 1500 m. (This is a very dangerous thing to do because of updrafts,

Stolb23 [73]

Answer:

$523269.9\ \text{N/m}$

Explanation:

q = Charge

r = Distance

$q_1=25\ \text{C}$

$r_1=3000\ \text{m}$

$q_2=40\ \text{C}$

$r_2=850\ \text{m}$

The electric field is given by

$E=E_1+E_1\\\Rightarrow E=k(\dfrac{q_1}{r_1^2}+\dfrac{q_2}{r_2^2})\\\Rightarrow E=9\times 10^9\times (\dfrac{25}{3000^2}+\dfrac{40}{850^2})\\\Rightarrow E=523269.9\ \text{N/m}$

The electric field at the aircraft is $523269.9\ \text{N/m}$

4 0

3 years ago

Objects 1 and 2

sattari [20]

Answer:

12 units

Explanation:

Original F = C q1q2/r^2 now change the parameters

New F = C 1/3 q1 2 q2 / (2r)^2

= 2/12 C q1q2/r^2 <=======the new force is 1/6 of original

1/6 * 72 = 12 units

3 0

2 years ago

As denizens of the surface of a spinning planet, we are always in uniform circular motion. Imagine you are in Nairobi (on the Ea

Klio2033 [76]

Answer:

6.02 radian

Explanation:

At 12 noon position is zero radian on Monday

at 12 midnight the position is π/2

at 11 am position on Tuesday is 2π/24 x 23 ( after 23 hours ) = 6..02 radian.

7 0

3 years ago

Electromagnetic waves differ fundamentally from either water or sound waves because they

stepladder [879]

<span>Electromagnetic waves differ fundamentally from either water or sound waves because they does not require any medium, they can travel in free space (vacuum)

Hope this helps!</span>

8 0

3 years ago

We can calculate the force that the atmospheric pressure produces on a surface. Consider a living room that has a 4.0m×5.0m floo

qaws [65]

Answer:

Force, $F=2.02\times 10^6\ N$