Luis got a 3 year car loan. If he pays $1250 in interest at a rate of 5%, how much must the loan have been for originally

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

How many grams of mgbr2 are needed to produce 75g or metal?

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]