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4 years ago

What are two processes that result in rocks being broken down into smaller pieces ?

Physics

2 answers:

Leya [2.2K]4 years ago

8 0

Answer: Chemical and physical

Explanation:

meriva4 years ago

5 0

Mechanical and Chemical. (Weathering and erosion)

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Which units are used to measure both velocity and speed? Check all that apply. m/s d/t km/h mph lph

GaryK [48]

The units used to measure speed and velocity are as follows: m/s, Km/h, and mph.

5 0

4 years ago

Read 2 more answers

A brick mason builds a simple machine to lift bricks from the ground up to the second story of a building. The machine requires

Iteru [2.4K]

Answer: A MA = 0.048

Explanation: 35 divided by 735 is equal to 0.048

4 0

3 years ago

49. A 6.1-kg bowling ball is liſted 2.1 m to a shell. Find

stealth61 [152]

Answer:

125.5J

Explanation:

Given parameters:

Mass of the bowling ball = 6.1kg

Height of lifting = 2.1m

Unknown:

Increase in the ball energy = ?

Solution:

The ball has changed position by moving it from one point to another. So, it has acquired more potential energy.

Potential energy = mgh

m is the mass

g is the gravity

h is the height

Now insert the given parameters and solve;

Potential energy = 6.1 x 9.8 x 2.1 = 125.5J

5 0

3 years ago

Find the moments of inertia Ix, Iy, I0 for a lamina that occupies the part of the disk x2 y2 ≤ 36 in the first quadrant if the d

Tasya [4]

Answer:

I(x) = 1444×k × ${\pi}$

I(y) = 1444×k × ${\pi}$

I(o) = 3888×k × ${\pi}$

Explanation:

Given data

function = x^2 + y^2 ≤ 36

function = x^2 + y^2 ≤ 6^2

to find out

the moments of inertia Ix, Iy, Io

solution

first we consider the polar coordinate (a,θ)

and polar is directly proportional to a²

so p = k × a²

so that

x = a cosθ

y = a sinθ

dA = adθda

I(x) = ∫y²pdA

take limit 0 to 6 for a and o to $\pi /2$ for θ

I(x) = $\int_{0}^{6}\int_{0}^{\pi/2}$ y²p dA

I(x) = $\int_{0}^{6}\int_{0}^{\pi/2}$ (a sinθ)²(k × a²) adθda

I(x) = k $\int_{0}^{6}a^(5)$ da × $\int_{0}^{\pi/2}$ (sin²θ)dθ

I(x) = k $\int_{0}^{6}a^(5)$ da × $\int_{0}^{\pi/2}$ (1-cos2θ)/2 dθ

I(x) = k $({r}^{6}/6)^(5)_0$ × ${θ/2 - sin2θ/4}^{\pi /2}_0$

I(x) = k × $({6}^{6}/6)$ × ( ${\pi /4} - sin\pi /4)$

I(x) = k × $({6}^{5})$ × ${\pi /4}$

I(x) = 1444×k × ${\pi}$ .....................1

and we can say I(x) = I(y) by the symmetry rule

and here I(o) will be I(x) + I(y) i.e

I(o) = 2 × 1444×k × ${\pi}$

I(o) = 3888×k × ${\pi}$ ......................2

3 0

3 years ago

What are the two main types of energy?

djyliett [7]

Answer:

Fourth option

Explanation:

They're many different types of energy, from chemical and mechanical to heat and solar energy. But the two most basic types of energy are "kinetic and potential energy" or the fourth option. Kinetic energy is the energy an object has when it is in motion, while potential energy is the energy an object has when it's as rest. These two specific types of energies are the most basic and you can even convert them into many different types of energies, like heat or electrical energy.

Hope this helps.

7 0

3 years ago