4. Which of the following particles has no electric charge?

a. proton

c. electron

b. neutron

d. ion

1. a. What is the name of the 2d Century Roman Scientist and Astrologer who created a set of "Handy Tables of data to compute the position of the Sun, moon and stars?

Gridlock occurs when: A. A car cuts into the gap in front of your car B. Traffic is required to travel by an alternate route C. Vehicles get stuck in the middle of an intersection

Thermal energy, electrical energy, chemical energy, and nuclear energy are all associated with what?

Based on newtons first law of motion which of the following describes the action of an unbalanced force on a car -A car moving at a fast constant speed -A car moving at a slow constant speed -A car that is braking -A car that is parked

You have measured the distance from Syene to Alexandria to be 493 miles, and you approximate Alexandria to be due north of Syene. This distance is the same fraction of Earth's circumference as the fraction of the full circle from part B is.

Work is a product of A force and distance B force and heat energy C cause and heat energy D cause and effect

An exploration submarine should be able to descend 1200 m down in the ocean. If the ocean density is 1020 kg/m3, what is the maximum pressure on the submarine hull?

Why cooking pans don't have have metal handles?

Why will marchers at the end of a long parade following a band be out of step with marchers nearer the band

How would you explain photosynthesis to a new student in class