Ch5 Forces in 2 Dimensions
A frictional force acts when this many surfaces touch.
What is 2?
This scientific law states that the planets move in elliptical paths, with the Sun at one focus.
What is Kepler's First Law?
The product of the average net force on an object and the time interval over which the force acts.
What is impulse?
The transfer of energy by mechanical means.
What is work?
He was a key figure in the Manhattan Project.
Who is Robert J. Oppenheimer?
The force that must be exerted on an object to cause it to be in equilibrium.
What is the equilibrant?
This surrounds any object with mass.
What is gravitational field?
The product of the object's mass and the object's velocity; is measured in kg*m/s.
What is momentum?
The work done, divided by the time needed to do the work.
What is power?
He discovered the nucleus of the atom.
Who is Ernest Rutherford?
The force exerted on one surface by a second surface when there is no motion between the two surfaces.
What is static friction?
What is Kepler's Second law?
This can be used to explain the propulsion of rockets.
What is the law of conservation of momentum?
The energy of an object, resulting from its motion.
What is kinetic energy?
Who is Robert Hooke?
The force exerted on one surface by a second surface when the two surfaces rub against one another because one or both of the surfaces are moving.
What is kinetic friction?
The attractive force between to objects that is directly proportional to the mass of the objects.
What is gravitational force?
Law that states that if there are no net external torques on an object, then its angular momentum is conserved.
What is the law of conservation of angular momentum?
Consists of two or more simple machines that are connected so that the resistance force of one machine becomes the effort force of the second machine.
What is a compound machine?
He proved that Schrödinger's wave equation could be interpreted as giving statistical (rather than exact) predictions of variables.
Who is Max Born?
The kinetic friction force is equal to this times the normal force.
What is the coefficient of kinetic friction?
What is Newton's law of universal gravitation?
States that the angular impulse on an object is equal to the change in the object's angular momentum.
What is the angular impulse-angular momentum theorem?
States that when work is done on an object, a change in kinetic energy occurs.
What is the work-energy theorem?
He proposed that observed particles are in fact composite, that is, comprised of smaller building blocks called quarks.
Who is Murray Gell-Mann?