The Solar System
What are the first thirty elements?
Definition of direction
What are the 25 elements in human body?
Calculate the force of gravitation between the earth and the Sun, given that the mass of the earth =6×1024 kg and of the Sun =2×1030 kg. The average distance between the two is 1.5×1011 m
What are planets? State any four characteristics of a planet.
What is the second-largest planet in our solar system?
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Hydrogen is the most abundant element in the Universe, but it is not the most abundant gas in the troposphere.
Reason R: Hydrogen is the lightest element.
In the light of the above statements, choose the correct answer from the given below
A is false but R is true
Both A and R are true and R is the correct explanation of A
A is true but R is false
Both A and R are true but R is NOT the correct explanation of A
What is the most abundant element in the universe?
Show that the weight of an object on the moon is 1/6 of its weight on the earth.
A object weight 10N, when measured on the surface of the earth, what would be it's weight measured on the surface of moon . what is the acceleration due to gravity on moon?
Calculate the value of acceleration due to gravity on a planet whose mass is 4 times as that of the earth and radius is 3 times as that of the earth.
Derivation of the weight of an object on the moon is equal to 1/6 th the weight on the earth.
- 8.785 hr
- 6.083 hr
- 5.351 hr
A person’s mass is measured on the moon and on the Earth. Which statement would be true?
The person's mass on Earth would be double of that on the moon.
The person's mass on the moon would be twice that on the Earth.
The person would have mass on the Earth but no mass on the moon.
The mass would be same on the moon and on the Earth.
What is the difference between an artificial satellite and a space probe.
Why do people believe in big bang theory? And why it is stated the
Most correct among all of other theories
The radius of the earth is 6370 km and of mars is 3400 km. If an object of 200 N weighs on earth what will be the weight on mars? The mass of mars is 0.11 that of earth.
Approximately how many comets are in our solar system?
The satellites in geostationary orbit are used in telecommunication.
- The Moon is about half the size of the Earth.
- Winds blow slower on the Moon than on Earth.
- The Moon is a natural satellite of the Earth.
- Only one side of the Moon is seen from the Earth.
How does moon form?
What would be the weight of a body of mass 50 kg on the surface of the moon, where g = 1.6 m/s2. What would be its mass?
The mass of a body on earth is 60 kg, its mass on moon is
What is a blackhole ?