Forces and motion
Centripetal Force
What is Ohm's Law?
V=IR
KE=1/2Iw^2
What method can we use to find the direction of a force acting on a proton when given the velocity and direction of magnetic field?
Right hand rule
Who proposed the three laws of motion?
Isaac Newton
Kinetic friction
How do you calculate the effective capacitance of capacitors in series in a circuit?
Inverse sum of the inverses
Why is some energy lost in a system at times?
Lost due to work (friction, heat, sound, etc.)
An electron is moving with velocity towards the top of the page, through a constant magnetic field directed into the page. Which direction is the magnetic force?
To the right
Who proposed the three laws of planetary motion?
Johannes Kepler
If an object has initial velocity in both the x and y directions, what will its path be?
Parabolic
What is the electric field in a conductor in equillibrium?
0
What is the difference between a perfectly elastic and an inelastic collision?
Energy is conserved in a perfectly elastic collision
As the magnetic field increases, what happens to the magnitude of flux?
Increases. Flux=BAcos(theta)
Which astronomer had an alcoholic moose that tragically died?
Tycho Brahe
Spring A has a spring constant of k. When stretched to a certain length x, its spring force is F. Spring A is now cut in half into two equal-lengthed springs. If one of these halves are stretched to the same length x, what is the new spring force?
2F
What determines the brightness of the bulb?
Amount of power dissipated
What is the equation for energy-mass equivalence?
E=mc^2
Heinrich Lenz
What is the R constant used in the ideal gas law when pressure is in atm?
R=0.08026 atm mol^-1 K^-1
In an ideal situation, Block A is resting on a surface, while connected to Block B which is hanging off of the surface. Identify the forces acting on Block A.
Gravitational force, normal force, tension
In a circuit, how does a capacitor act once it is fully charged?
What is the energy of a photon that is moving through a vacuum with a wavelength of 510nm? H=6.626x10^-34
3.9x10^-19 J
If a wire loop is moved closer to the north end of a magnet, which direction is a force created due to the induced emf and magnetic field of the magnet interacting?
Against the direction of motion, there is a retarding force.
What other AP class can you find resources for on Planet Holloway?
AP Environmental Science