Kat leaves home and walks 250. m North and then turns East and walks another 350. m. Give the vector displacement (both magnitude and direction) for the shortest distance to reach Kat from her home to
where she is now. Draw a rough vectoral sketch of the problem and calculate her displacement using math

Your 249 ml cup of coffee is too hot to drink when served at 82 degree celsius. what is the mass of an ice cube taken from a -21 degree celsius freezer, that will cool your coffee to a pleasant 54 degree celsius. specific heat of the water is 4190 j/kg c, specific heat of ice is 2090 j/kg c, heat of fusion of ice is 3.33 x 10^5 j/kg

Which type of wave can travel without a medium

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j