Answer:
Option c) A massive collapsed star
Explanation:
A black hole forms as a result of the collapse of the center of a massive star into itself. This process is known as supernova.
The gravitational pull of the black hole is enormously strong enough that nothing can escape it not even any electromagnetic radiations or light and absorbs everything that tries to cross it as a result of enormously massive star into a very tiny or small space.
Answer:
1.26 secs.
Explanation:
The following data were obtained from the question:
Force (F) = 20 N
Extention (e) = 0.2 m
Mass (m) = 4 Kg
Period (T) =.?
Next, we shall determine the spring constant, K for spring.
The spring constant, K can be obtained as follow:
Force (F) = 20 N
Extention (e) = 0.2 m
Spring constant (K) =..?
F = Ke
20 = K x 0.2
Divide both side by 0.2
K = 20/0.2
K = 100 N/m
Finally, we shall determine the period of oscillation of the 4 kg object suspended on the spring. This can be achieved as follow:
Mass (m) = 4 Kg
Spring constant (K) = 100 N/m
Period (T) =..?
T = 2π√(m/K)
T = 2π√(4/100)
T = 2π x √(0.04)
T = 2π x 0.2
T = 1.26 secs.
Therefore, the period of oscillation of the 4 kg object suspended on the spring is 1.26 secs.
Answer:
the amount of heat that gets through both the wires will be same.
Explanation:
By the Fourier's law of conduction we have:
where:
= rate of heat transfer
k = thermal conductivity of the material
A = area of the material
dT = temperature difference across the length dx
According to the question, the system to be analysed is isolated from the surrounding.
Until the thermal equilibrium is established between aluminium and copper wires the amount of heat that gets through both the wires will be same.
<em>But the rate of heat transfer through the aluminium will be greater as it has double the thermal conductivity of copper.</em>
Essay on the problems kenge will face going to college in the story seeing is believing is described below
Explanation:
1.An essay is really just a body of words meant to convey something. So, in your class, you used an essay to convey the pros and cons of love
2.In the admissions essays, you are using an essay to convey something about yourself. You will probably be asked to write about the reasons you want to enter a specific field or college, an event in your life that helped shape you, or other personal subjects. If it helps, rewrite these prompts into questions:
REAL examples
- Why do you want to go to Harvard?
- Why do you want to enter the medical field?
- Are there any events in your life that affected your grades, but are not reflected in the rest of your application?
3.While the standard INTRO, BODY, CONCLUSION essay is widely used, it is not required. It is used because it is an effective way to convey information:.
- INTRO: grabs reader's attention, tells the reader the main topic, gives necessary background information, and lists what is going to be expressed about the topic
- BODY: one paragraph per idea about the main topic (eg 1 for pros, 1 for cons; OR 1 telling about an event in your life, 1 explaining how that event affected you, 1 giving an example of how you used what you learned in a new situation)
- CONCLUSION: summarizes what you already told the reader, gives a broader context, and explains how the information is useful
4.To summarize: an essay is just a body of words that expresses an idea. There are many ways to write one, but having an introduction, paragraphs separated into ideas, and a conclusion helps make your idea easier to understand and more memorable.
Zero acceleration means the object's velocity is not changing.
So the object is moving in a straight line, at a constant speed
that could be anything (including zero) as long as it's constant.
