A small ball, attached to a string, is spun in a perfect circle with radius r. If the radius of the circle is 30 cm and the ball travels half the circumference of the circle in 0.5 seconds, what is the velocity of the ball rounded to the nearest whole number?

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?

What structural formula represents 4 electrons shared between two atoms?

You are doing a science experiment with a fahrenheit thermometer. your data must be in degrees celsius. if you measure a temperature of 125°f, what is this temperature in degrees celsius