Your washer had a power of 400 watts, and your dryer has a power of 2200 watts. How much energy do u use to clean a load of clothes in 45 min. of washing and an hour of drying.

What is the measurement of how fast an object moves relative to a reference point?

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?