static/current/electricity
what is static electricity?
An electric charge on the surface of an object
The gravitational force between two massive spheres depends on?
how big they are
what is the impulse equal to?
the net force of the object
what is power?
Power is the rate at which work is done.
what are some fundamental physics measurements?
Length, mass, time, electric current temperature
Electric current originates from which part of an atom?
the negatively charged electrons
What property of an object determines how much inertia it has?
Mass
what two variables does the momentum depend on?
mass and velocity
true or false Work is a form of energy, and in fact it has units of energy.
True
define displacement
the change in position of an object
what happens when two objects with a positive charge come close to one another?
they repel each other
what are Newton’s first,second,and third laws?
law of Inertia
law of acceleration and law of
action and reaction
What are the units of momentum?
kg m/s
what is energy measured in?
energy is always measured in joules
units for distance?
what are three types of static electricity?
contact, detachment, and frictional
true or false your weight would be the same as it is on earth?Explain why
False Due to the difference in gravitational pull the weight will be less on the moon than on Earth due to the mass of the moon being less than that of the Earth.
What is the law of conservation of energy?
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another.
What is the difference between kinetic and potential energy?
kinetic energy is energy due to motion, while potential energy is stored energy
what is an unit of measurement?
A unit of measurement is a definite magnitude of a quantity defined and adopted by convention or by law.
whats the difference between static and current electricity?
static electricity is different because charges are at rest and they are accumulating on the surface.in current electricity the electrons are moving inside the conductor.
Two objects move toward each other because of gravitational attraction. As the objects get closer and closer, the force between them
increases
what is the formula or conservation of energy?
K1+U1=K2+U2
Fill in the blank: ______ is done when an object moves through a distance because of a ______acting upon the object
1-work
2-force
what is the difference o 1D and 2D motion?
the study of one-dimensional motion is the study of movement in one directions. 2D motion is the movement in two directions, including the study of motion along a curved path, such as projectile and circular motion.