Answer:
A - 0 N
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The evidence that supports continental drift and plate tectonics includes different fossils, the same rocks and the shapes of continents that fit together.
<h3>What is continental drift?</h3>
Continental drift is a theory that states continents once were part of one big landmass known as Pangea.
Nowadays, the theory of continental drift proposed by Alfred Wegener has been replaced by plate tectonics.
In conclusion, the evidence that supports continental drift and plate tectonics includes fossils, the same rocks and the shapes of continents that fit together.
Learn more on the continental drift here:
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Explanation:
1) when skating because of friction , some of the kinetic energy is converted to thermal energy.
therefore Kinetic energy is reducing and thermal energy is increasing
2) when the brake pads are applied , the speed get decreased . this will cause the Kinetic energy to reduce. thermal energy is increased due to the friction occur when braking
3) when the boy stop , he no longer has a movement. now the whole amount of kinetic energy should be transfered to another form of energy. So the thermal arises
4) as we know energy can never be destroyed. it can only be transferred in to another form. here the kinetic and the thermal energy were the only types of energy that we could see.
therefore
Total Energy = kinetic energy + thermal energy
Answer:
Explanation:
To find the force we proceed by defining the variables we have,
The charge on one of the balls is defined under the equation,
Due to the height we need to calculate the potential energy at the height of 115m,
The kinetic energy would be given by
From the law of conservation we equate the two equations
In this way we now calculate the strength of the particle
Answer:
F = 1.06N
Explanation:
In order to calculate the force that produces the given pressure you take into account the following formula:
(1)
P: pressure = 6.0kPa = 6.0*10³ Pa
F: force = ?
A: cross-sectional area of the tube = π r^2
r: radius of the tube = 1.5cm/2 = 0.75cm = 0.75*10^-2 m
You solve the equation (1) for F, and replace the values for the area A and the pressure P:
The force tha produces a pressure of 6.0kPa in a tube with a diameters of 1.5cm is 1.06N