Physics mock final
A job is done slowly, and an identical job is done quickly. Both jobs require the same amount of work but different amount of...
Power
What happens to the kinetic energy of a car that was moving at 15 :/s and sped up to a speed of 30 m/s
Quadruples
What happens when one light bulb in a parallel circuit burns out?
The rest of the bulbs will continue to work
True or false? In a series circuit the current is the same through every component.
True
In a parallel circuit each component receives the same _________ as the source
Voltage
Ohms law states the relationship between...
Voltage, resistance, current
How much work is it possible for an engine to do?
1000 J
The power of a car can be expressed as...
2000 watts
The force between two charges is 120 N. If one of the CHARGES is DOUBLED, the force will be...
240 N
The force between two charges is 120 N. If the DISTANCE between the charges is DOUBLED, the force will be...
30 N
An arrow in a bow has a 70 J of potential energy. How much kinetic energy will it have after it has been shot?
70 J
An object has 5 excess electrons. The TOTAL CHARGE of the object is...
8x10^-19 C
What are the 3 main rules that apply to series circuits?
All components share the same current, resistances add to equal a larger total resistance, voltage drops add to equal a larger voltage drop
What are the 3 main rules for parallel circuits?
All components share the same voltage, resistances diminish to equal a smaller total resistance and branch currents add to equal a larger total current
What is a resistor?
Anything that uses electricity to do work
In physics, doing work means...
Applying a force for a certain distance
In a parellel circuit, bulbs share the full voltage of the battery. Does this make them bright or dim?
Bright
Transferring charge by touching one object to another is called...
Charging by conduction
The rate of flow of electric charges is the...
Current
The rate at which charge flows through a circuit is ___________ to the voltage
Directly related
All electrical charges are multiple of the charge on a...
Electron
What are the charged parts of an atom?
Electrons and protons
What causes the charge on the styrofoam plate that has been rubbed with rabbit fur?
Electrons from the fur are transferred onto the plate
When electric current flow in a conductor...
Electrons move and protons stay still
True or false? In a parallel circuit the current is the same throug every component.
False
What can the current do in a parallel circuit?
Follow more than one path to return to the source
In physics power means...
How quickly work is done
What happens when one light bulb in a series circuit burns out?
It breaks the circuit
Which statement describes voltage in a series circuit?
It splits up across each component
What happens to the voltage in a parallel circuit?
It stays the same throughout
Which statement describes current in a series circuit?
It stays the same throughout
Since each load in a series circuit uses some of the voltage, does the leave more, less, or the same for the next load in the circuit?
Less
Kinetic energy of any objects depends only on...
Mass and speed
Which term below describes the sum of kinetic and potential energy?
Mechanical energy
If an atom is negatively charged, then one can be sure that it contains...
More electrons than protons
An object that has kinetic energy MUST be...
Moving
The charge on a styrofoam place that has been rubbed with rabbit fur is...
Negative
Which law can be used in a series circuit?
Ohms law
