Question
Express escape velocity in terms of $g$ and $R.$
✓
Answer
Escape velocity, vesc = $\sqrt{\frac{2 G M}{R}}$
Now, $g = \frac{G M}{R^{2}}$
$\therefore GM = gR^2$
Now, $g = \frac{G M}{R^{2}}$
$\therefore GM = gR^2$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Some examples of redox reaction are given. Identify the reactants and oxidants from them.
$2H_2S + SO_2 \rightarrow 3S ↓ + 2H_2O$
→$2H_2S + SO_2 \rightarrow 3S ↓ + 2H_2O$
What is meant by the heating effect of current? Give two applications of the heating effect of current.
The diagrams show the appearance of a fork when placed in front of and close to two mirrors A and B, turn by turn.
- Which mirror is convex.
- Which mirror is concave.
Why is it asked to segregate wet and dry waste in each home?
Define boiling point of a liquid.
(OR)
What is boiling point of a liquid?
(OR)
What is boiling point of a liquid?
With which human organ systems (or human systems) are the following associated?
- Vena cava.
- Glomerulus.
- Alveoli.
- Villi.
What is the electronic definition of oxidation and reduction?
Read the following extract and answer the questions that follow:
A liberal view behind the concept of organ and body donation is that after death our body should be useful to other needful persons so that their miserable life would become comfortable. Awareness about these concepts is. increasing in our country and people are voluntarily donating their bodies.
A liberal view behind the concept of organ and body donation is that after death our body should be useful to other needful persons so that their miserable life would become comfortable. Awareness about these concepts is. increasing in our country and people are voluntarily donating their bodies.
Life of many people can be saved by organ and body donation. Blinds can regain their vision. Life of many people can be rendered comfortable by donation of organs like liver, kidneys, heart, heart valves, skin, etc. Similarly, body can be made available for research in medical studies. Many government and social organizations are working towards increasing the awareness about body donation.
1.What is the liberal view behind the organ and body donation?
2.Name any four organs that can be donated.
Direct current and Alternating current.
Distinguish between: Mitosis and meiosis.