Give the symbol for two halogens

A subway train is designed with a maximum acceleration of + 0.20 m/s^2 which allows for both passenger safety and comfort. a. If subway stations are 1.2 km apart, what is the maximum velocity that can be obtained between stations? b.

A parachutist of mass 75kg descends with an acceleration of 8 m/s2. What is the upward force exerted by the air on the parachutist?

Is a reflection matter?

How does activity on the Sun affect natural phenomena on Earth?

a string of fifty 15 ohm christmas tree lights are connected in series. one burns out, they all burn out. calculate the total resistance.

You get up in the morning, get dressed, eat breakfast, walk to the bus stop, and ride to school. List three different energy transformations that have taken place.

If you lived by the sea, what effect of the moon would you see? Describe the effect.

20g of ice at 0℃ is mixed with 20g of hot water at 60℃. Then amount of water in mixture in equilibrium condition will be

A person cannot see clearly objects closer than 2.00 m from her/him. What is the refractive power (in diopters) of the correction lenses that will allow her/him to clearly see objects located 30.

Which is a branch of Earth science? physics ecology chemistry geology