If steel is more dense that lake water, why can a boat float

How much force is needed to accelerate a 66 kg skier at 2 m/sec^2?

If the moon disapared what affect would this have on earths tides

A person using an oxygen mask is breathing air that is 33% oxygen. what is the partial pressure of the o2, when the air pressure in the mask is 110 kpa

A car traveling at 30m/s screeches to a halt, leaving 55 m long skid marks. what was the cars acceleration while braking

How many protons and neutrons does sulfur have

A bird has a kinetic energy of 3 J and a potential energy of 25 J. What is the mechanical energy of the bird?

Material A has a higher thermal conductivity than Material B. Which material will transfer energy by conduction faster?

an electrical iron box having power 400w is operated in 10hours. what will be the energy consumed by the device in commercial unit?

True or False: If your gas pedal jams, you should turn the key to lock to lock the steering wheel.

Pylon cables in the National Grid have some resistance. Power (watts) = Current2 (amperes) x Resistance (ohms) Looking at the power equation above, can you explain why transmitting electricity at a very high voltage is beneficial?