PHYSICS HIGH SCHOOL

The calcium carbonate found in limestone was originally extracted from _______.a. seawater
b. shale
c. magma
d. silt

Answers

Answer 1

Answer:

The correct answer is a:Seawater

Answer 2

Answer:

Answer:

the answer b

Explanation:

Related Questions

Aspace walking astronaut has become detached from her spaceship! She’s floating in space with her handy tool belt attached to her waist, thinking about how she might get back to the ship, which she can see 50m from her current location. How can she get back to the ship? Use the language from the laws of motion in your answer.What can she do with the tool belt? What will that action cause her body to do? Why? Which of Newton’s Laws applies to this situation? Write a paragraph which incorporates all of the above information.
You are asked to measure the density of a cube that has a side of 10 centimeters, and weighs 1 kg nominally. The tools you have are a ruler with the smallest reading at 1 mm, and a scale with a precision down to 0.1 g. Both tools are calibrated. Please estimate the final error on the density of the object that you measure.
Describe what happens if you are riding a skateboard and hit something like a curb with the front wheels.
A complete series circuit consists of a 12.0 V battery, a 4.70 O resistor, and a switch. The internal resistance of the battery is 0.30 O. The switch is open. What does an ideal voltmeter read when placed across the terminals of the switch?12.0 V9.40 V2.40 Vzero
What is the process by which water dissolves certain minerals in the soil and carries them away?

You observe a distant galaxy. you find that a spectral line normally found in the visible part of the spectrum is shifted toward the infrared. what do you conclude?

Answers

The galaxy is moving away from you.

The weight of a body floating in a liquid is

Answers

Answer:

The apparent weight is the weight of the body minus the weight of the liquid displaced. The body will float only when both the weights are same. In this case, the given body of weight W is floating and hence the apparent weight is zero.

Answer:

Zero

Explanation:

If light travels from oil (slower medium) to water (faster medium) at an angle, what happens to the direction of the light ray in water with respect to normal?A. It moves away from the normal. B. It moves toward the normal.
C. It will move along the normal. D. It will move perpendicular to the normal.
E. It stops traveling.

Answers

If light travels from oil to water at an angle, what happens to the direction of the light ray in water with respect to the normal, is it moves away from the normal.

Answer:

to shorten the other answer...its A

Explanation:

Using a candle as the object on an optical bench set up as shown in the diagram. What two measurements must be taken in order to find the focal length of the lens?

Answers

Answer:

When you view the candle with a lens, located at a distance D of the candle, you will see an inverted image of the candle, and this image of the candle may be a little distorted. At this point you need to change the distance between the observer (you) and the lens.

When the image of the candle is nitid (this means that the image is focalized)

You need to measure the distance between the lens and the observer. suppose that this distance is d.

(this process is usually written as: If the actual height of the candle is H, you need to record the distance where the image of the candle also has a height H)

Now, the focal point of the lens will be obtained with the lens maker equation:

1/D + 1/d = 1/f

where f is the focal point of the lens.

Compute the resistance in ohms of a copper block 5.0 cm long and 0.10 cm2 in cross-sectional area. (ρ = 1.77 × 10-6 ohm-cm)

Answers

R=ρ l/a
l=5 cm
a=0.10 cm²
ρ=1.77×10∧-6 Ωcm
R=(1.77×10∧-6) ×5/0.10
=8.85 ×10∧-5 Ω

resistance is directly proportional to length and inversly proportional to area of cross section is given by above equation

Wich is a scalar quantity
(1)velocity (2)speed (3)acceleration (4) displacement