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guapka [62]
3 years ago
11

An Alaskan rescue plane traveling 37 m/s drops a package of emergency rations from a height of 134 m to a stranded party of expl

orers. The acceleration of gravity is 9.8 m/s^2. Where does the package strike the ground relative to the point directly below where it was released?
Physics
1 answer:
photoshop1234 [79]3 years ago
6 0

vf = - 46 m/s since up is positive

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A passenger compartment of a rotating amusement park ride contains a bench on which a book of mass
Basile [38]

a) 120 s

b) v = 0.052R [m/s]

Explanation:

a)

The period of a revolution in a simple harmonic motion is the time taken for the object in motion to complete one cycle (in this case, the time taken to complete one revolution).

The graph of the problem is missing, find it in attachment.

To find the period of revolution of the book, we have to find the time between two consecutive points of the graph that have exactly the same shape, which correspond to two points in which the book is located at the same position.

The first point we take is t = 0, when the position of the book is x = 0.

Then, the next point with same shape is at t = 120 s, where the book returns at x = 0 m.

Therefore, the period is

T = 120 s - 0 s = 120 s

b)

The tangential speed of the book is given by the ratio between the distance covered during one revolution, which is the perimeter of the wheel, and the time taken, which is the period.

The perimeter of the wheel is:

L=2\pi R

where R is the radius of the wheel.

The period of revolution is:

T=120 s

Therefore, the tangential speed of the book is:

v=\frac{L}{T}=\frac{2\pi R}{120}=0.052R

8 0
3 years ago
Which division of time on the geologic time scale is the shortest?
Scrat [10]

Explanation:

In geology, there are 5 divisions of time on the time scale. They are:

  1. eons
  2. eras
  3. periods
  4. epochs
  5. ages

Eons are the largest time period, while ages are the shortest time period. The rest of the above listed are in between the two.

8 0
3 years ago
Question: Which one of the following foods contains simple carbohydrates?
Katena32 [7]

Answer:

Milk

Hope this helps,if not sorry

5 0
3 years ago
Exit ticket
kirill115 [55]

Why did the narrator use the phrase “fit together like puzzle pieces” to describe how the cells of a developing human embryo form a human face

7 0
3 years ago
What resource is used to make fertilizers and other products such as toothpaste and insecticides?
igomit [66]

Answer:

Silica

Explanation:

The most commonly used abrasives are hydrated silica (softened silica), calcium carbonate (also known as chalk), and sodium bicarbonate (baking soda).

5 0
2 years ago
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