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3 years ago

12

What are the main agents of metamorfic rock?

1 answer:

Igoryamba3 years ago

5 0

The agents of metamorphism include heat, pressure (stress), and chemically active fluids. During metamorphism, rocks are often subjected to all three metamorphic agents simultaneously.

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A block of plastic in the shape of a rectangular solid that has height 8.00 cm and area A for its top and bottom surfaces is flo

kifflom [539]

Answer:

0.35 kg

Explanation:

8 cm = 0.08 m

For the block to stay balance, the buoyancy force must be the same as gravity that pulls it down.

Let mass of the block be M, then the gravity would be Mg

Let water density be $\rho_w = 1000 kg/m^3$ , the buoyancy force would be the weight of water that is displaced by the submerged block.

For example, when there is no coin, block is $h_0 = 0.0312m$ submerged. The weight of water displaced must be

$W_0 = Ah_0\rho_wg = 0.0312A1000g = 31.2Ag$

Which is also the weight of block, of Mg

Therefore M = 31.2A. (1)

As coins are stacked on top of block, h increase, so as weight of water displaced and total weight of block and coins. Now let m be the total weight of coins. The gravity of block and weight must be (M+m)g. And the weight of water displaced is:

$W = Ah\rho g = (M + m)g$

$h = \frac{M}{A\rho} + \frac{m}{A\rho}$

Since the linear plot of h vs m has a slope of 0.089 m/kg, we can interpret it as

$\frac{1}{A\rho} = 0.089$

$A = \frac{1}{0.089\rho} = \frac{1}{89} = 0.011 m^2$

So from the eq. (1) we can solve for M = 31.2A = 0.35 kg

8 0

3 years ago

Doug rubs a piece of fur on a hard rubber rod, giving the rod a negative charge. Which of the following statements best describe

Leto [7]

Answer:

B is correct. Electrons are added to the rod.

Explanation:

Because the fur lose electrons to the rode and because positively charged while the rod because negative

7 0

3 years ago

A falling ball of mass 0.5 kg experiences a downward force due to gravity of mg (where g = 9.8 m/s2) and an upward force of air

schepotkina [342]

Applying Newton's Second Law of Motion, the acceleration of the ball is 16.8 $m/s^2$

<u>Given the following data:</u>

Mass = 0.5 kg

Acceleration due to gravity = 9.8 $m/s^2$

Upward force = 3.5 N.

To find ball's acceleration, we would apply Newton's Second Law of Motion:

First of all, we would determine the net force acting on the ball.

$Net \; force = Upward\;force + Downward\;force$

$Downward\;force = 0.5$ × $9.8$

Downward force = 4.9 N

$Net \; force = 3.5 + 4.9$

Net force = 8.4 N

Mathematically, Newton's Second Law of Motion is given by this formula;

$Acceleration = \frac{Net\;force}{Mass}\\\\Acceleration = \frac{8.4}{0.5}$

<em>Acceleration = 16.8 </em> $m/s^2$ <em />

Therefore, the acceleration of the ball is 16.8 $m/s^2$

Read more here: brainly.com/question/24029674

6 0

3 years ago

What is the acceleration of a car moving

Iteru [2.4K]

Answer: Accelaration is 2.77 m/s*s

<h2 />

Explanation:

V0=0km/h=0m/s

V1=100 km/h=27.7 m/s

t=10s=

Use equation for accelaration : a=(V1-V0)/t

a=(0m/s-27.7m/s)/10s

a=-27.7s/10s

a=2.77m/s*s

6 0

4 years ago

On March 21, a stick casts the following shadow. What is the most likely time of day?

jenyasd209 [6]

Answer:

9:00 AM

Explanation:

I took the test and that was the answer

5 0

4 years ago

Read 2 more answers