No, black holes are not two-dimensional structures in space. They are three-dimensional regions of space where gravity is so strong that nothing, not even light, can escape from them.
If the mass of one or both objects were increased by a factor of four, the force of gravity between them would be four times greater. The force of gravity is directly proportional to the product of the masses of the two objects.
You cannot increase gravity, but you can increase the force of gravity on a piece of matter with mass by1. Making the piece of matter larger2. Making it more dense3. Moving it closer to the center of a separate piece of matter.
The work done by gravity on the two-block system is equal to the force of gravity multiplied by the distance the blocks move in the direction of gravity.
Gravity is the natural force of attraction that pulls objects toward each other, whereas gravitational force is the specific force of attraction between two objects with mass. Gravity is a general concept that describes the phenomenon, while gravitational force refers to the specific interactions between objects due to their mass.
Two ways that some organisms can escape from unfavorable environmental conditions would be to move or migrate or to hibernate. Some organisms can even adapt.
Nothing. They're two ways of referring to the same law of nature.
We can know through two ways. First, we know the moon's mass and radius. From there it is fairly simple to calculate surface gravity. Second, we have sent probes and people to the moon, making it possible to actually measure the strength of gravity.
There is no difference. Gravity and gravitational force are simply two different ways of describing force by which bodies pull on each other relative to their size (gravity!).
Two ways in which people travel to the theatre was walking and also by boat.
by studying the earth gravity by studying eartquakes
by studying the earth gravity by studying eartquakes
by studying the earth gravity by studying eartquakes
by studying the earth gravity by studying eartquakes
by studying the earth gravity by studying eartquakes
People helped hide fugitive slaves along the Underground Railroad and wouldn't turn them over to slave catchers. They also helped many slaves escape to Canada.
Two ways liquids vaporize are evaporation, in which molecules escape the liquid's surface and become a gas, and boiling, in which the entire liquid reaches its boiling point and turns into a gas.