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3 years ago

Which describes the motion in a convection current? horizontal motion only vertical motion only linear motion circular motion

Physics

2 answers:

Orlov [11]3 years ago

8 0

Answer:

circular motion

Explanation:

Circular motion can be regarded as

movement of particular object along the circumference in a circle. It is

rotation of particular object along a circular path. Circular motion could be

uniform, along with constant angular rate of rotation as well as constant speed. It could also be non-uniform along with changing rate of rotation. The acceleration that is been experienced when one is in uniform circular motion is called"Centripetal acceleration"

Convection currents is type of current that takes place after a reservoir of fluid has been heated at the bottom, then cool at the top.the fluid expand as a result of Heat , then density decreases, the plates on top of them is been carried as a result of circular motion of the convection

Mars2501 [29]3 years ago

6 0

Answer:

Answer D.

Explanation:

Doing the Assignment right now :)

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When an oxygen atom forms an ion, it gains two electrons. What is the electrical charge of the oxygen ion?

Mashutka [201]

-2. This is because it is gaining electrons. Electrons are negative. Therefore it is a negative charge.

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dezoksy [38]

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3 years ago

An artillery shell is launched on a flat, horizontal field at an angle of α = 40.8° with respect to the horizontal and with an i

Lina20 [59]

Answer:

1317.4 m

Explanation:

We are given that

Angle= $\alpha=40.8^{\circ}$

Initial speed = $v_0=346m/s$

We have to find the horizontal distance covered by the shell after 5.03 s.

Horizontal component of initial speed= $v_{ox}=v_0cos\theta=346cos40.8=261.9m/s$

Vertical component of initial speed= $v_{oy}=346sin40.8=226.1m/s$

Time=t=5.03 s

Horizontal distance = $Horizontal\;velocity\times time$

Using the formula

Horizontal distance= $261.9\times 5.03$

Horizontal distance=1317.4 m

Hence, the horizontal distance covered by the shell=1317.4 m

8 0

3 years ago

1. An object is moving in a straight line at constant speed. Which of the following is true?

liberstina [14]

c. II and III only (the object has 0 acceleration and the object has constant velocity.)

Why?

Let's discard each of the given options to find the correct one(s).

<h3>- There are no forces acting on the object:</h3>

False, if an object has a constant speed, it does not mean that there are no forces acting on it, in fact, there will be always acting forces, like frictional force, gravity force, air resistance, and others.

<h3>- The object has a 0 acceleration:</h3>

True, in an object is moving at constant speed, it means that there is no acceleration, the speed will be the same all the time during motion.

<h3>- The object has constant velocity:</h3>

True, <u>if an object is moving in a straight line at constant speed</u> the velocity will be also constant. The velocity of an object is referring to its speed and its direction, if the object is moving in a straight line, the direction will be the same, so, if the speed is constant, the velocity will be also constant.

Have a nice day!

3 0

3 years ago

If the mass of a material is 43 grams and the volume of the material is 8 cm^3, what would the density of the material be?

ankoles [38]

D=m/v
=43/8
=5.375kg/cm3

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4 years ago