2 years ago

Looking at the bottom standing wave in the picture, how many complete waves are present?

Physics

1 answer:

Shtirlitz [24]2 years ago

4 0

Answer:

the last one

Explanation:

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In terms of π, what is the length of an arc

frosja888 [35]

Answer:

Since 2 pi = 360 deg and pi equals 180 deg, 30 deg = pi / 6.

S = theta * R = pi / 6 * 3 cm = 1.57 cm

6 0

2 years ago

the object on the right gained mass so that it had as much mass as the object on the left, how would the gravitational force bet

kherson [118]

The gravitational force between the objects A. It would increase.

Explanation:

The magnitude of the gravitational force between two objects is given by:

$F=G\frac{m_1 m_2}{r^2}$

where

G is the gravitational constant

$m_1,m_2$ are the masses of the two objects

r is the separation between the objects

In this problem, we are told that one of the object (the one on the right) gains mass: this means that, for instance, the value of $m_2$ increases. We can see from the equation that the gravitational force is directly proportional to the masses: therefore, if one of the masses increases (while the distance between the two objects remains constant), it means that the force also increases.