PHYSICS HIGH SCHOOL

Why do oil tankers sit lower in water
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Answers

Answer 1
Answer:

When a lower tank is damaged, the incoming sea water pushes the oil in the damaged tank up into the ballast tank. Because of the hydrostatic pressure, there is an automatic transfer out of the damaged tank. The double-hull design is aimed at the probability of zero outflow.

Related Questions

A spherical electron cloud surrounding an atomic nucleus would best represent
When an explanation to a problem is accepted as always true, it isa. law theory hypothesis fact?
For the elements with the electron affinities given in the table in the introduction, which element is most likely to accept an electron?
Please help on this one
How many times more intense is an earthquake that measures 7.5 on the Richter scale than one that measures 6.7? (Recall that the Richter scale defines magnitude of an earthquake with the equation M=log i/s , where i is the intensity of the earthquake being measured, and S is the intensity of a standard earthquake

A . 2 m/s^2
B . 30 m/s^2
C . 30 m/s
D . 0.5 m/s

Answers

Answer:

C-30m/s that my answer

How do biotic and abiotic conditions change during secondary succession??

Answers

Answer and explanation;

-Ecological succession is the process by which an environment changes structure, in terms of resident species, over a period of time. Ecological succession falls under two categories, primary and secondary, which determine the types of factors that are involved.

-The factors involved in ecological succession are either biotic or abiotic. Biotic factors are those that involve life and its aspects. Abiotic factors are those that involve aspects external to life but are still indirectly involved. An example of an abiotic factor would be climate.

The soil, an abiotic factor, of an environment affects ecological primary succession greatly. Different species of plants require different soil conditions.

Climate, an abiotic factor highly involved in both primary and secondary succession, plays a significant role in determining the direction of succession in an environment.

Any form of succession will change the environment. That's why there is succession in the first place. With each stage of succession there will be greater biodiversity that results in a change in abiotic factors like soil composition, shade, humidity, weather, exposure, etc

6. State whether each of the following is an example of conduction, convection, and/or radiation. Explain if you think there is more than one possibility. (a)You are cooking, and the handle of the spoon you are using to stir the soup starts to feel hot.

(b)A pail of hot water is added to a child’s inflatable pool. After a while, the pool is warm.

(c)You go to the park, and when you sit on a metal bench, it is hot.

(d)You are standing near a barbecue, and you feel the heat on your face.

Answers

a).  Convection is heating the soup in the pot.
When you stick the spoon into the hot soup,
conduction heats the spoon all the way up to the end.

b).  Water conducts heat a little bit. 
But convection is much more responsible for the
uniform distribution of temperature in the kiddie pool.

c).  The heat from the metal bench conducts directly
to the buttus epidermis when you sit on it.

d).  You feel the heat on your face ... but not on the back of your
neck ... on account of radiation from the fire and the hot grill.

The inventor of the photographic process in which a photograph produced without a negative by exposing objects to light on light sensitive paper, is named _____________a. Man Ray
c. Dorothea Lange
b. Richard Avedon
d. Pablo Picasso

Answers

He experimented with photography and learned how to create “cameraless” photos, also known as photograms or photograms, which he termed radiographs. He created them by physically laying things on light-sensitive paper, which he then developed in light. Thus, option A is correct.

What inventor of the photographic process in a photograph?

By placing items like the thumbtacks, coil of wire, and other circular formations utilized in this image directly on a piece of photosensitized paper and exposing it to light, Man Ray created his “rayographs” without using a camera or photography .

Although he continued to have an interest in painting after starting his artistic career as a painter, photography was the medium that brought him both commercial and critical success.

Therefore, One of the most important modernist photographers, filmmakers, and object makers was Man Ray.

Learn more about photograph here:

brainly.com/question/18033242

#SPJ6
A. Man Ray --------------------

A ball is projected horizontally from the top of a 92.0-meter high cliff with an initial speed of 19.8 m/s. Determine: (a) the horizontal displacement and (b) the final speed the instant prior to hitting the ground.

Answers

Answer:

Part a)

d = 85.8 m

Part b)

v = 46.8 m/s

Explanation:

Part a)

As we know that ball is projected horizontally

so here the vertical speed of the ball is zero

now we have

y = (1)/(2)gt^2

now we have

92 = (1)/(2)(9.8)t^2

t = 4.33 s

now in the same time the horizontal distance covered by the ball

d = v_x t

d = 19.8 * 4.33

d = 85.8 m

Part b)

now the horizontal speed of the ball always remains constant

so we have

v_x = 19.8 m/s

now in vertical direction we have

v_y = v_0 + at

v_y = 0 + 9.8(4.33)

v_y = 42.4 m/s

so the final speed of the ball is given as

v = √(v_y^2 + v_x^2)

v = √(42.4^2 + 19.8^2)

v = 46.8 m/s
The ball has two independent motions; the vertical motion and the horizontal motion.
That is the ball is falling vertically downwards from the cliff and the same time the ball is moving horizontally forward from the cliff.
Note: Initial Vertical Speed is = 0, Initial Horizontal Speed = 19.8 m/s
For the vertical motion: the initial velocity is zero. That is u_(y) = 0.
S = (u_(y))t + (1/2)gt^2.                            where g = acceleration due to gravity = 10 m/s^2
S = Vertical height =  92m
Substituting u_(y) = 0, and  S = 92m, g = 10m/s^2
92 = 0*t  + (1/2)*10*t^2
92 = (1/2)*10*t^2
92 = 5t^2
5t^2 = 92
t^2 = 92/5
t^2 = 18.4    Take square root of both sides
t = √(18.4)
t = 4.29 seconds, that is the time to reach the ground. Time is same both for horizontal and vertical motion

a) Horizontal Displacement, which is Range R = Horizontal Speed * time
R = u_(x) * time
R = 19.8 * 4.29 = 84.942 m.

b) Final Speed before hitting the ground.
Remember we realized that speed was in two parts: Vertical Speed and Horizontal Speed.
Just before hitting the ground Horizontal speed is same = 19.8 m/s, this is the same as the initial horizontal projected speed. (No acceleration in Horizontal direction so this remains the same)
Just before hitting the ground, v_(y) = u_(y) + gt
At projection Vertical speed is initially zero  u_(y) = 0
v_(y) = 0 + 10*4.29  
Time is same both for horizontal and vertical motion
v_(y) = 42.9  m/s
The velocity just before hitting the ground is 19.8 m/s in the horizontal direction and 42.9 m/s in the vertical direction.
These two are at right angles to each other. Therefore the resultant is:
= \sqrt{19.8^(2)+ 42.9^(2) }
= 47.25 m/s.
This is the resultant velocity just before it hits the ground.

Can the normal force on an object be directed horizontally?

Answers

For this case, the first thing you should do is take into account the definition of normal force.

By definition, we have:

  • The normal force is that which is exerted on an object that is perpendicular to the surface.

If we define the coordinate system as:

  1. Horizontal axis points to the right
  2. Vertical axis points up

Then An object resting on a wall can have normal force in a horizontal direction.

Answer:

The normal force is perpendicular to the surface. The direction can be horizontal. Example: an object on a wall.
Other Questions
Adam applies an input force to the pulley as he pulls down to lift the object. As he does this, Adam wonders about how the pulley is helping him. How is the pulley helping Adam lift the object?a. All of these answers are correct. b. A fixed pulley lowers the amount of force needed to do the same amount of work. c. A fixed pulley increases the distance over which the force is applied. d. A fixed pulley helps Adam change the direction of the effort force.
. A nonnative species of animal is introduced into a healthy ecosystem. In it's new environment, this species has no predators, although it preys on several native animals in the ecosystem. Make a prediction about the biodiversity and health of this ecosystem in the future.a.) Biodiversity and ecosystem health will both increase in the future. b.) Biodiversity and ecosystem will both decrease in the future. c.) Biodiversity will decrease and ecosystem health will increase in the future. d.) Biodiversity will increase and ecosystem health will decrease in the future.
TRUE OR FALSE : Boyle’s law states that, as the pressure of a gas increases, the volume decreases.
Energy is transferred by the process of convection from the hot water at the bottom of the tank to the cooler water at the top. Explain how