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satela [25.4K]
3 years ago
15

The diagram below shows different layers of sedimentary rocks.

Physics
2 answers:
Flauer [41]3 years ago
5 0
Bro it is layer f was formed earlier than layer a
Arlecino [84]3 years ago
3 0
Layer F was formed earlier than Layer A
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A dentist’s drill starts from rest. After 4.28 s of constant angular acceleration it turns at a rate of 28940 rev/min. Find the
mylen [45]

Answer:

Angular acceleration, is 708.07\ rad/s^2

Explanation:

Given that,

Initial speed of the drill, \omega_i=0

After 4.28 s of constant angular acceleration it turns at a rate of 28940 rev/min, final angular speed, \omega_f=28940\ rev/min=3030.58\ rad/s

We need to find the drill’s angular acceleration. It is given by the rate of change of angular velocity.

\alpha =\dfrac{\omega_f}{t}\\\\\alpha =\dfrac{3030.58\ rad/s}{4.28\ s}\\\\\alpha =708.07\ rad/s^2

So, the drill's angular acceleration is 708.07\ rad/s^2.

4 0
3 years ago
If the distance d (in meters) traveled by an object in time t (in seconds) is given by the formula d = A + Bt^2, the SI units of
Yuliya22 [10]

Answer:

The SI units of the “A” is m (meters)

The SI units of the “B” is m/s^2

Explanation:

Given the distance = d meters.

Time taken to travel = t (seconds)

Function of the distance, d = A + Bt^2

Now we have given the above information and from the given distance function, we have to find the SI units of the A and B. Here, below are the SI units.

Thus, the SI units of the “A” is = m (meters)

The SI units of the “B” is = m/s^2

6 0
3 years ago
Lindsay is late to class and is running down the hallway at a speed of 2 m/s the length of the hallway is 150 meters . How long
Mamont248 [21]

Explanation:

a=v-u\t

2=150-0/t

2t=150

t=75sec

7 0
3 years ago
Why are lunar calendars not more widely used today?
Nookie1986 [14]
The seasons affect the scheduling of far more events the moon phases do.
6 0
3 years ago
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When two different species compete for resources, it is______ competition.
Katen [24]

Answer:

it is a interspecific competition

Explanation:

i just took a test with this question

4 0
3 years ago
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