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Lubov Fominskaja [6]
3 years ago
10

What is the theory of plate tectonics? Question 15 options: A.the theory that earth's surface consists of separate plates that m

ove and interact, producing geologic features and events
B.the theory that earth's surface is one large plate that produces geological features and events

C.the theory that states that the continents were once connected in one large landmass and have since moved apart

D. the theory that earthquakes and volcanoes cause plates on the earth's surface to move
Physics
2 answers:
ollegr [7]3 years ago
8 0

Answer:

A is the answer to your question! hoped this help

vazorg [7]3 years ago
3 0

Answer: A

Explanation:

A.the theory that earth's surface consists of separate plates that move and interact, producing geologic features and events

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How do boron-10 and boron-11 differ?
tensa zangetsu [6.8K]

Answer:

I think it has to do something with their ionizations... not entirely sure though.

Explanation:

3 0
3 years ago
Derive the formula v= u+ at<br>please derive in detail ​
gogolik [260]

Lets do

We know

The rate of change of velocity is acceleration .

\\ \sf\longmapsto a=\dfrac{dv}{dt}

\\ \sf\longmapsto dv=adt

Integrate both sides

\\ \sf\longmapsto \int dv=a\int dt

As acceleration is constant .Take it outside of integral .On velocity we can take limit u to v and time from 0 to t

\\ \sf\longmapsto {\displaystyle{\int}}^v_u dv=a{\displaystyle{\int}}^t_0 dt

Hence

\\ \sf\longmapsto v{\huge{|}}^v_u=at

\\ \sf\longmapsto v-u=at

\\ \sf\longmapsto v=u+at

4 0
3 years ago
Read 2 more answers
A solid conducting sphere of radius 2.00 cm has a charge of 8.84 μC. A conducting spherical shell of inner radius 4.00 cm and ou
AlladinOne [14]

Answer: The electric field is given in three regions well defined; 0<r<2; 2<r<4; 4<r<5 and r>5

Explanation:  In order to solve this problem  we have to use the gaussian law in the mentioned regions.

Region 1; 0<r<2

∫E.ds=Qinside the gaussian surface/ε0

inside of the solid conducting sphere the elevctric field is zero because the charge is located at the surface on this sphere.

Region 2; 2<r<4;

E.4*π*r^2=8,84/ε0

E=8,84/(4*π*ε0*r^2)

Region 3; 4<r<5

E=0 because is inside the conductor.

Finally

Region 4; r>5

E.4*π*r^2=(8,84-2.02)/ε0

6 0
3 years ago
A 7.5 kg block is placed on a table. If it's bottom surface area is 0.6m2, how much pressure does the block exert on the tableto
kap26 [50]
Pressure is defined as the force per unit area. This measurement is more convenient to use for describing a force exerted. The standard unit for pressure is Pascal. For this problem, force is the gravitational pull from the block. Calculations are as follows:

P = F/A where F = mg

F = 7.5 ( 9.81) = 73.6 N

<span>P = 73.6 N / 0.6 m^2 = </span><span>122.5 Pa

Thus, the answer is D.
</span>
7 0
3 years ago
Read 2 more answers
Compare and contrast bio-mass and hydroelectricity as sources of energy.
Naya [18.7K]

Bio-mass and hydro-electricity both are renewable sources of energy.

Bio-mass is organic matter used as a fuel, especially in a power station for the generation of electricity. It is obtained from dead plants and animal wastes. Therefore, it is naturally refilled. It is the result of natural processes. Wood, gobar gas, etc. are some of the examples of bio-mass.

Hydro-electricity, on the other hand, is acquired from the potential energy stored in water at a height. Energy from it can be produced again and again. It is harnessed from water and obtained from mechanical processes.

8 0
3 years ago
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