IMPORTANT! A student plans an investigation to determine whether an object has a positive charge, a negative charge, or is electrically neutral. Which statements describe procedures and the expected results that the student should follow?

Bring a pith ball that has a negative charge near the object. If the ball is repelled the object is electrically neutral.

Bring a pith ball that has a positive charge near the object. If the ball is repelled, the object has a positive charge.

Bring a pith ball that has a negative charge near the object. If the ball is attracted, the object has a positive charge.

Bring a pith ball that has a positive charge near the object. If the ball is attracted, the object is electrically neutral.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

the pseudoscience are like beliefs, theories, or like practices that are considered scientific