Weight of an object remains same on the Earth and the Moon.
true or false?

Which instrument is used to measure air temperature

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?

How many joules will be lost by 150 g of water if it is cooled from 90oc to 5oc?