What is the net electrical charge on a magnesium ion that is formed when a neutral magnesium atom loses two electrons?

An object with mass 110 kg moved in outer space. When it was at location its speed was 19.5 m/s. A single constant force N acted on the object while the object moved to location m. What is the speed of the object at this final location

the density of gold is 19.3 g/cm3. suppose a certain gold wedding ring deplaced 0.55mL of liquid when dropped in a glass of sparkling cider. how much did this wedding ring cost

It is easier to drive In sharp nails in a piece of wood than the blunt ones why?

For what type of object is the period-luminosity relation used for determining distances?

What is the meant by the frequency of a wave? What is the unit?

Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.51 s after passing his window. Roger's room is on the second floor, 10 m above the sidewalk.

Which statements accurately describe the Doppler effect?

Describe how mass and distance affect gravitational force.

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?

A wave has a wave length of 2 m and a frequency of 500 Hz, what is its speed?