Homework Statement
Four objects, each with a positive charge of 1.0 3 1025 C,
are placed at the corners of a 45° rhombus with sides of
length 1.0 m, as in Figure 13. Calculate the magnitude of
the net force on each charge.
Homework Equations
F = Kq1q2/r^2
The Attempt at a Solution
Homework Statement
You are a tourist on space odyssey; at what altitude above the surface of Earth will your weight be one-half your weight on the surface? express your answer as a mutiple of Earth's radius rE
Homework Equations
Fg= GMm/r^2
The Attempt at a Solution
not sure how to...
really cause when i read this "the speed at which the bullet emerges from the block" meaning the speed of the bullet when it is in the block not when it first shot?
Homework Statement
A 63-kg student stands on a 34-kg cart that is free to move in any direction. The cart and student are moving together with a velocity of 3.2 m/s [W]. The student then starts to walk so that her velocity is 1.8 m/s [25° W of N] relative to the floor. Calculate the new...
Homework Statement
A shell explodes into three fragments of equal masses. If two fragments travel at right angles to one another with equal speeds, 'v', what is the direction and speed of the third fragment?
Homework Equations
doing ratios?
The Attempt at a Solution
i don't know...
Homework Statement
A 0.25-kg mass is attached to the end of a spring that is attached horizontally to
a wall. When the mass is displaced 8.5 cm and then released, it undergoes SHM.
The force constant of the spring is 1.4 3 102 N/m. The amplitude remains
constant.
(a) How far does the mass...