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Natasha_Volkova [10]
3 years ago
5

A ferris wheel with radius r rotates freely about its central

Physics
2 answers:
Licemer1 [7]3 years ago
6 0

Answer:

decreases by 2

Explanation:

Aleks04 [339]3 years ago
5 0

Answer:

Explanation:

think so c

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A leaf floating down from a tree is an example of an object in free fall.
Nuetrik [128]

Answer:

Oi, mate its false

Explanation:

because if an leaf floats down from a tree it is not considered an object for a free-fall

7 0
4 years ago
A sample of blood is placed in a centrifuge of radius 16.0 cm. The mass of a red blood cell is 3.0 ✕ 10−16 kg, and the magnitude
Anettt [7]

Answer:

f=145.29Hz

Explanation:

The centripetal force is given by:

F_c=ma_c(1)

Here m is the body's mass in which the force is acting and a_c is the centripetal acceleration:

a_c=\frac{v^2}{r}(2)

Here v is the speed of the body and r its radius. The speed is given by:

v=2\pi fr(3)

Replacing (3) in (2):

a_c=4\pi^2f^2r(4)

Replacing (4) in (1) and solving for f:

F_c=m4\pi^2 f^2r\\\\f=\sqrt{\frac{F_c}{4m\pi^2r}}\\f=\sqrt{\frac{4*10^{-11}N}{4(3*10^{-16}kg)\pi^2(16*10^{-2}m)}}\\f=145.29Hz

7 0
3 years ago
Why is it important to select a coordinate system when studying motion?
kvv77 [185]

Motion is detected when an object changes its position with respect to a reference point. Coordinate system is basically used to represent motion. A coordinate system uses numbers or coordinates which represent position of the reference points on a two-dimensional or three-dimensional space. The trajectory of a point or line can be studied on a coordinate system which describes various aspects of motion like velocity, acceleration, distance, displacement etc. Coordinate system is important because it helps to choose a starting point and the direction (which will be positive).

5 0
3 years ago
Why do some people suffer for nose bleed at higher altitudes?​
Novosadov [1.4K]

Answer:because of small amount of oxygen

Explanation:

If you get higher by the atmosphere the air will start to decrease

8 0
3 years ago
In a cold pack, an ___________ reaction draws heat from the surroundings. A. exothermic B. endothermic C. exergonic
elena-s [515]
In a cold pack, an endothermic reaction draws heat from the surroundings, although there are several different types of cold packs, some with different reactions. 
8 0
4 years ago
Read 2 more answers
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