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Two ice skaters initially at rest have pushed off each other and are moving in opposite directions with equal speeds. What is known about their masses?
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What pushes surface water in different directions?
Large land masses
Why if total momentum is zero but kinetic energy is not equal to zero?
This sounds like a trick question. Momentum has a sign (positive or negative), and if you have two masses that are going in opposite directions their total momentum is zero. But the sum of their kinetic energies is positive.
Gravity is a pull between two masses True False?
Yes, gravity exists between two objects that have mass.
In Which direction does force of gravity work?
In both directions along the line between the centers of the two masses that are being drawn together by gravity.
When two bodies are rubbed against each other what kind of charges do they acquire.explain with two examples?
equal and opposite depending on the masses
What is the stress that pushes masses of rock in opposite directions in a sideways movement?
shearing
What is stres that pushes masses of rock in opposite directions in a sideways movement?
shearing
Why do electron n positron move in opposite directions in pair production and how does momentum is conserved when they move in opposite directions?
They move in opposite directions when in a magnetic field because they have opposite charges. The force on a particle depends on its charge -- make the charge completely opposite, and the force on it will be completely opposite. Momentum is conserved when they move in opposite direction (that is, in their center of mass frame) because their respective masses are identical. One electron mass moving in one direction plus one electron mass moving in the opposite direction means a total momentum of zero. The system begins with zero momentum and ends that way.
Ice sheet are enormous masses of ice that?
flow in all directions
What are ice sheet?
They are enormous masses of ice that flow in all directions.
What pushes surface water in different directions?
Large land masses
Why if total momentum is zero but kinetic energy is not equal to zero?
This sounds like a trick question. Momentum has a sign (positive or negative), and if you have two masses that are going in opposite directions their total momentum is zero. But the sum of their kinetic energies is positive.
What makes a gravitational force?
The existence of two masses. Wherever they are in the universe, there is a force in both directions between them trying to pull them together. The strength of the force depends on the masses of both masses and on the distance between them.
What is a front that forms when several air masses remain over an area for several days?
A front that forms when several air masses remain over an area for several days is a stationary front. Winds along a stationary front are usually parallel to the front, blowing in opposite directions on either side, which is one reason why the front does not move.
Which weather map symbol denotes a stationary front?
A stationary front is stalled between two air masses. The markings used on a weather map are alternating red half circles and blue spikes pointing in opposite directions. This indicates no movement.
Why isn't electron and positron mass equal?
Their masses are equal. It's their charges that are opposite.
Gravity is a pull between two masses True False?
Yes, gravity exists between two objects that have mass.
