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3 years ago

What causes the erosion of rocks on the moon’s surface?

Physics

2 answers:

liberstina [14]3 years ago

7 0

Lack of an atmosphere on the Moon greatly reduces the erosion of the surface.

tia_tia [17]3 years ago

4 0

impact of particles from space.

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______is the rate of change in velocity.

shepuryov [24]

Answer:

Acceleration

Explanation:

Acceleration is the rate of change in velocity

speed is how fast an object is moving

Velocity is how fast an object is moving in the particular direction

pls mark me brainliest

6 0

3 years ago

A certain parallel-plate capacitor is filled with a dielectric for which κ = 5.0. The area of each plate is 0.027 m2, and the pl

alexdok [17]

Answer:

Energy will be $4.776\times 10^{-5}J$

Explanation:

We have given that dielectric constant k = 5

Area of the plate $A=0.027m^2$

Distance between the plates $d=2mm=2\times 10^{-3}m$

Electric field E = 200 kN/C

We know that capacitance is given by $C=\frac{K\epsilon _0A}{d}=\frac{5\times 8.85\times 10^{-12}\times 0.027}{2\times 10^{-3}}=0.597\times 10^{-9}F$

We know that electric field is given by $E=\frac{V}{d}$

So $V=Ed=200\times 10^3\times 2\times 10^{-3}=400volt$

So energy will be $E=\frac{1}{2}CV^2=\frac{1}{2}\times 0.597\times 10^{-9}\times 400^2=4.776\times 10^{-5}J$

6 0

2 years ago

Several years from now you have graduated with an engineering/physics degree and have been hired by a nanoengineering firm as an

nadya68 [22]

Answer:

See attached handwritten document for answer

Explanation:

5 0

3 years ago

Please help.

cestrela7 [59]

Hello,

A police car parked on the side of the highway emits a 1200 Hz sound that bounces off a vehicle farther down the highway and returns with a frequency of 1250 Hz.

How fast is the vehicle going?

Doppler equation formula: ƒL = ƒS(v - vL)/(v - vS)

The wave returns with a frequency of 1250 Hz, the echo frequency is higher; the car must be traveling towards the police car.

The wave echo is coming back towards the police car at the same speed as the sound wave travels towards the moving car so the relative speed between the cars is half of the speed of the echo.

* speed of sound equals about 337 m/s 

2v / 337 = (1250/1200) - 1
2v = 14.04 m/s 
v = 7.02 m/s

Thus, the vehicle is going 7.02 m/s.

Faith xoxo

3 0

3 years ago

Which statement is true about the ideal mechanical advantage of a third-class lever?

zhannawk [14.2K]

Answer:

Explanation:

The mechanical advantage is always less than 1 because the force needed to move an object is always greater than the weight of the object.

6 0

3 years ago