All categories

3 years ago

Calculate the escape velocity

Physics

1 answer:

o-na [289]3 years ago

8 0

Answer:

v = 2.38 × 10³ m/s

Explanation:

Escape velocity, v = √(2gR) where g = acceleration due to gravity on planet and R = radius of planet.

Since it is given that the weight of the man on the moon is 1/6 his weight on earth, and g' = acceleration due to gravity on moon and g = acceleration due to gravity on earth and m = mass of man,

mg' = mg/6

g' = g/6

Since g = 9.8 m/s²,

g'= 9.8 m/s² ÷ 6

g' = 1.63 m/s²

The escape velocity of the moon is thus v = √(2g'R) where R = radius of moon = 1.737 × 10⁶ m.

Substituting these into v, we have

v = √(2g'R)

v = √(2 × 1.63 m/s² × 1.737 × 10⁶ m)

v = √[5.663 × 10⁶ (m/s)²]

v = 2.38 × 10³ m/s

You might be interested in

Two small conducting point charges, separated by 0.4 m, carry a total charge of 200 C. They repel one another with a force of 12

Lunna [17]

Answer:

200 C

Explanation:

Let C1 and C2 be their charges. According to Coulomb's law

$F_C = k\frac{C_1C_2}{R^2}$

where k = $8.99\times10^9 nm^2/C^2$ is the constant, R = 0.4m is the distance between them, F = 120 N is their resulting charge force

$120 = 8.99\times10^9\frac{C_1C_2}{0.4^2}$

$C_1C_2 = \frac{120*0.4^2}{8.99\times10^9} = 2.13\times10^{-9}$

Since their total charge is 200C:

$C_1 + C_2 = 200$ or $C_1 = 200 - C_2$

We can substitute the above equation

$C_1C_2 = (200 - C_2)C_2 = 2.13\times10^{-9}$

$-C_2^2 +200C_2 - 2.13\times10^{-9} = 0$

$C= \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

$C= \frac{-200\pm \sqrt{(200)^2 - 4*(-1)*(-0.00000000213)}}{2*(-1)}$

$C= \frac{-200\pm200}{-2}$

$C = 1.06 \times 10^{-11}$ or $C \approx 200$

So the larger charge is C = 200 C

8 0

4 years ago

Tech A says that the maintenance requirements of a vehicle have not changed since the creation of the automobile. Tech B says th

pogonyaev

Answer:

Tech B

Explanation:

There is a revolution of changes occur since the beginning of vehicle creation. Many technology came into existence and proposed us the best design, features and model. But as a machine, several fatigue or wear and tear can happen to this hence a proper maintenance is required in order for smooth running of your vehicle.

Many manufacturers have booklet that mention the proper maintenance interval for better running of your vehicle. As daily environment is changing, the maintenance requirements of a vehicle is also changing. New technology is bringing new features hence their maintenance rate as well as requirement also needs to be upgraded.

5 0

4 years ago

Newton's Law of Motion that describes action-reaction pairs is the:

dybincka [34]

Explanation:

I think it is third law.

6 0

3 years ago

Read 2 more answers

Many bugs can reproduce both sexually and asexually. When would asexual reproduction be

azamat

Answer:

try this

Sexual reproduction produces more offspring than asexual reproduction.

Asexual reproduction is a simpler process than sexual reproduction.

Sexual reproduction requires a single parent.

Asexual reproduction occurs when two gametes fuse.

Explanation:

5 0

3 years ago

Why do experts describe the rate of fossil fuel use as unsustainable

svetlana [45]

Explanation:

Experts describes the rate of fossil fuel use as unsustainable because fossil fuel is a non-renewable source of energy. Fossil fuels are usually formed by a series of biology, chemical and geological activities acting in nature. They take several millions of years to form and accumulate in nature.

Most of the internal combustion engines in automobiles, factories e.t.c relies on fossil fuels.
With the heavy demand, reserves are be depleted.
The rate of formation of new sources is very slow and may not suffice in our life time.
Therefore, we cannot continue to use this source of energy that cannot be adequately sustained.

Learn more:

renewable resources brainly.com/question/6944540

#learnwithBrainly

6 0

4 years ago