1) 2.00 uC point charge of mass 5.00 g is suspended on a string and placed in a horizontal electric field. The mass is in equilibrium when the string forms a 17.3° angle with the
vertical.
A)
In the space below, sketch a free-body diagram of the problem. Show the vertical and
horizontal components of the tension force in the string.
B)
Find the electric force on the charge in this field.
C)
Find the strength of the electric field.

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

There is a theory that indicates that dinosaurs became extinct when about 65 million years ago, a large asteroid hit the earth surface. dust caused by this collision blocked the sunlight reaching the earth's surface and many forms of life became extinct due to the cold. fearing this threat, how large the radius of an asteroid should you be looking for if the dangerous asteroid size is approximately the same as the one that killed the dinosaurs? available data suggests that about 18% of that asteroid's mass ended up as a dust spread evenly over earth after eventually settling out of the upper atmosphere. about 0.0180 g/cm^2 of dust, which is chemically different than the earth's rock, covered the earth's surface. typical asteroids have a density of about 1.9 g/cm^3. now that we know the size of the asteroid, how much energy was released during impact, assuming all of it was just the kinetic energy of the asteroid right before the impact?

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?