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Ratling [72]
3 years ago
8

Identify the features that are unique to some sedimentary rocks.

Physics
1 answer:
mr Goodwill [35]3 years ago
3 0
(f). Characteristics<span> of </span>Sedimentary Rocks<span>. </span>Sedimentary rocks<span> can be categorized into three groups based on sediment type. Most </span>sedimentary rocks<span> are formed by the lithification of weathered </span>rock<span> debris that has been physically transported and deposited.</span>
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A wheel 1.0 m in radius rotates with an angular acceleration of 4.0rad/s2 . (a) If the wheel’s initial angular velocity is 2.0 r
Oliga [24]

Answer:

(a) ωf= 42 rad/s

(b) θ = 220 rad

(c) at = 4 m/s²  ,  v = 42 m/s

Explanation:

The uniformly accelerated circular movement,  is a circular path movement in which the angular acceleration is constant.

There is tangential acceleration (at ) and is constant.

We apply the equations of circular motion uniformly accelerated :

ωf= ω₀ + α*t  Formula (1)

θ=  ω₀*t + (1/2)*α*t²  Formula (2)

at = α*R  Formula (3)

v= ω*R  Formula (4)

Where:

θ : angle that the body has rotated in a given time interval (rad)

α : angular acceleration (rad/s²)

t : time interval (s)

ω₀ : initial angular velocity ( rad/s)

ωf: final angular velocity ( rad/s)

R : radius of the circular path (cm)

at : tangential acceleration (m/s²)

v : tangential speed (m/s)

Data

α = 4.0 rad/s² : wheel’s angular acceleration

t = 10 s

ω₀ = 2.0 rad/s  : wheel’s initial angular velocity

R = 1.0 m  : wheel’s radium

(a)  Wheel’s angular velocity after 10 s

We replace data in the formula (1):

ωf= ω₀ + α*t

ωf= 2 + (4)*(10)

ωf= 42 rad/s

(b) Angle that rotates the wheel in the 10 s interval

We replace data in the formula (2):

θ=  ω₀*t + (1/2)*α*t²

θ=  (2)*(10) + (1/2)*(4)*(10)²

θ=  220 rad  

θ=  220 rad  

(c) Tangential speed and acceleration of a point on the rim of the wheel at the end of the 10-s interval

We replace data in the Formula (3)

at = α*R = (4)(1)

at = 4 m/s²

We replace data in the Formula (4)

v= ω*R = (42)*(1)

v = 42 m/s

6 0
3 years ago
As an object sinks in a fluid, the buoyant force ____.
kiruha [24]
Beginning when the bottom of the object first touches the water,
and as it descends and more and more of it goes under, the
buoyant force on it increases during that time.

As soon as the object is completely underwater, it doesn't matter
how deep under it is, the buoyant force on it remains the same.

3 0
3 years ago
Read 2 more answers
If you dive underwater, you notice an uncomfortable pressure on your eardrums due to the increased pressure. The human eardrum h
irinina [24]

Answer:

h=10m

Explanation:

From the question we are told that:

Area a=70 x 10^{-6}

Force F=7N

Generally the equation for Pressure is mathematically given by

Pressure = Force/Area

P=\frac{F}{A}

P=\frac{ 7}{(70 * 10^{-6})}

P= 1*10^{5} Pa

Generally the equation for Pressure is also mathematically given by

P=hpg

Therefore

h=\frac{P}{hg}

h=\frac{10000}{1000*9.8}

h=10m

6 0
3 years ago
12. Why do you think afternoons are much warmer than the mornings or evenings? ​
Darya [45]

Answer:

Afternoons are much warmer than the mornings or evenings is explained below in complete detail.

Explanation:

Because in the afternoon the sun is on the head and the beams of sunshine arrive straight to the earth so we exhibit warmer and in daylight and evening the sun is sparse to the earth so we observe colder than an afternoon. However, in the evening, when the sun is weak, I don't sense or experienced loads of heat and sunburn on body parts that are viewing the sun directly.

6 0
2 years ago
What type of energy powers most household appliances
Alenkasestr [34]

Answer:

Electrical energy powers most household appliances.

5 0
3 years ago
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