Recent content by Hmpca

i thought you could figure out the mass of the moon without knowing the mass of the earth. tomorrow i have an exam and my teacher said don`t expect me to give you any sheet with equations and constants. so i guess i got to memorize the mass of the earth. thank you

Homework Statement the radius of the moon is 1 over 3.65 of the radius of the earth, while the acceleration due to gravity of the moon is 1 over 6 of that on the earth`s surface. calculate the mass of the moon.

i graphed cut-off voltage verses frequency. when i figured out plank's constant so when i calculated the slope of the function i got 4.224x10-15. My question is how to convert V.s to J.s for the value of hhereS the question FINDING A VALUE OF PLANK'S CONSTANT FORM YOUR GRAPH. calculate the...

yeah i got it !:!) you know what I thought... they wanted me to make the fields perpendicular to each other and THEN figure out the velocity of the electron.

so are you saying i should first figure out the electric field and then multiply it by -1 to get the value of magnetic field. when you have that rearrange the magnetic force equation for v

i don`t want the fields to cancel each other out. i want the speed of the electron when both fields are perpendicular( right angle to each other) magnetic field force=qvBsineθ electric field force=kqq over r squared.

Magnetic Forces on Conductors and charges-- the motor principle An electron moving through an electric field of 475 V/m and a magnetic field of 0.1T experiences no force. if the electron's direction and the directions of the electric and magnetic fields are all mutually perpendicular, what is...

I will check this website and and the forum you sent me. thank you

it is not calculus based. here's the list of topics the test is going to cover. -domain theory of magnetism -Magnetic Force on Moving Charges -Effects of Magnetic Fields -Field Theory -Magnetic Force on a Conductor -Ampère’s Law -Coaxial Cables and Magnetic Fields -The Ampere As a Unit of...

i'm currently taking grade 12 physics. my teacher is really nice, but i got say that she sucks at teaching, and the textbook we're using is worse. can anyone here help me with understanding the basics theories and equations I need for this test?