Would life be different if the electron were positively charged and the proton were negatively charged? Does the choice of signs have any bearing on physical and chemical interactions? Explain.

Q. A stone is projected at an angle of 30° with the vertical. If the horizontal component of its velocity is 9.8 m/s. Calculate the i) maximum height and horizontal range

Quantum effects can be seen at the atomic and nano levels. Why is nanotechnology more useful than atomic technology for creating new products? It is too small for dangerous quantum effects to apply. It is too large for most quantum effects to apply.

A train travels 62 kilometers in 1 hours, and then 79 kilometers in 1 hours. What is its average speed?

A negatively - charged object has an excess of?

2 kg of air is at T = 120degreeC and P = 3.5 bar. Find the volume.

Why is a decrease in Earth's ozone harmful to life?

What force does a window washer want acting on him when trying to keep the same position

How many Mars-sized planets can fit in Jupiter

Is tin magnetic, ferromagnetic or non-magnetic?

Mrs. Newman's class decides to perform an experiment during a class connect session to determine how long it takes different objects to hit the floor when dropped from the student's desk. Each student dropped three notebooks, one weighing 0.