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Anarel [89]
2 years ago
6

Fossil A is found in a rock layer above a layer containing Fossil B. Which fossil is probably older? A) Fossil A B) Fossil B C)

both are the same D) can't be determined
Physics
2 answers:
luda_lava [24]2 years ago
8 0
Fossil B is older the lower they found the fossil the older it is 

weeeeeb [17]2 years ago
6 0
  Rock layers build up over time from being sedimented. The further down the layers are, the older the layers are. Fossil A is found above the Fossil B rock layer. Since Fossil B is in the layer below Fossil A, it is older. Therefore the answer is B, fossil B is probably older. 
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A block oscillating up and down on a spring comes to the top of its path, where it is momentarily at rest. At the instant it is
True [87]

Opposite to the direction of the velocity which led it to its current position.

Explanation:

The direction of momentum when a vertically oscillating block comes to the rest momentarily will be opposite to the direction of the velocity that it has just followed to reach reach its current position.

The direction of change in momentum at the bottom will be upwards and at the top will be downwards.

The change in momentum is mathematically defined as:

\Delta P=m.v_f-m.v_i

where:

m= mass of the block

v_f= final velocity of the block

v_i= initial velocity of the block

When the block comes to rest it is due to the result of continuously decreasing velocity.

7 0
3 years ago
Select the correct answer. The motion of a car on a position-time graph is represented with a horizontal line. What does this in
enyata [817]

If the car's motion appears as a horizontal line on a <u><em>position-time </em></u>graph, it shows that as time changes, the car's position doesn't change.

This is just a complicated way to say that the car is <em>not moving</em>.<em> (A)</em>

7 0
3 years ago
If you are driving 80 km/h along a straight road and you look to the side for 2.1 s , how far do you travel during this inattent
ella [17]
Velocity = displacement / time

First, Always make sure that your units for things are the same. In this question, we are given time in seconds and hours. So, we need to make them all use 1 unit.

I will do seconds.

To convert 80km/h to m/s, divide by 3.6.

22.2222…. m/s = displacement / 2.1s

Multiply by 2.1s on both sides

46.6666……m = displacement

You travelled 47 meters.
7 0
2 years ago
Thermal energy produced by friction cannot usually be used to do work. true/false
maria [59]
I believe the correct response would be true, thermal energy or heat that is produced by friction usually cannot be used to do work.
4 0
3 years ago
Read 2 more answers
If the light shining on the metal becomes brighter, will the number of electrons being emitted per second (the photo-current)inc
attashe74 [19]

Answer:

The given statement is correct.

When the light becomes brighter then the electron emitted per second increases.

when light is incident on the metal it delivers energy in the form of small energy packets.

these small energy packets is known as photons.

More the intensity of light  more the photon will be emitted.

Electron gain kinetic energy after absorbing energy from the photon.

8 0
2 years ago
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