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4 years ago

What is the diameter of a circle

2 answers:

5 0

A diameter is a straight line that begins at one end of the circle and ends at the opposite end. The condition for a line to be a diameter is that it must pass through the centre of the circle. If a line that touches two points on the circle, does not pass from the centre of the circle, it cannot be called a diameter.
The length of the diameter is the measurement of the line that connects the two points of the circle.

Komok [63]4 years ago

3 0

The Diameter<span> starts at one side of the </span>circle<span>, goes through the center and ends on the other side.</span>

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Why do electrons transfer charge and not protons?

mel-nik [20]

<h2>Answer:Protons interact in ways that electrons do not. ... Electrons are not affected by the strong force, and so they only get trapped by the electrical attraction to the nucleus which is much weaker in ionized atoms.</h2><h2 /><h2>Explanation:Therefore it is easier for electrons to move away from one atom to another, transferring charge.</h2>

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4 years ago

Liquid nitrogen boils at 77.2 k. what is this temperature in degrees celsius

Ratling [72]

<span>77.2 k is -195.95 C

To convert from Kelvin to Celsius, you simply subtract 273.15 from the temperature. So the expression becomes c = 77.2 - 273.15 = -195.95</span>

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3 years ago

(e)<br> Give an example of a process when electrons behave as:<br><br> A.particles.<br> B.a wave.

borishaifa [10]

Answer:

particles

Explanation:

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3 years ago

A ball bearing is projected vertically upwards from the ground with a velocity of 15ms. Calculate the time taken by the ball to

cupoosta [38]

Answer:

t = 3 [s]

Explanation:

To solve this problem we must use the following equation of kinematics.

$v_{f}=v_{o}-g*t$

where:

Vf = final velocity [m/s]

Vo = initial velocity = 15 [m/s]

g = gravity acceleration = 10 [m/s²]

t = time [s]

Now replacing we have:

$0 = 15 -10*t\\10*t=15\\t= 1.5[s]$

Note: In the equation above the gravity acceleration is negative, because the movement of the ball bearing is pointing againts the gravity acceleration.

The time calculated is only when the ball bearing reaches the highest elevation, and it will take the same time for descending, therefore the total time is:

t = 1.5 + 1.5 = 3 [s]

7 0

3 years ago

What would happen if you try to put two balloons with the same charge together

ivanzaharov [21]

Answer:

they would repel because they have the same charge. Charges that are different will stick together.

3 0

3 years ago

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