A uniformly charged rod of length L and uniform charge per unit length lambda lies along the x axis. Find the horizontal and vertical components of the electric field at the point P on the y axis that
is a distance d from the origin.
What are the approximate values of the E field components when d>>L?

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Ascientific blank must be testable and capable of being proven false?