In terms of solar quantities ro, lo and t a) calculate the radius of a type a iv star (t = 9400 k, l = 19l) b) calculate the luminosity of a type m4v star (t 2900 k, r 0.14ro) c) calculate the effective surface temperature of a 10-210 white dwarf with i o: r-10-2re

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s.calculate eddy’s power rating

How many times did thomas edison mess up the light bulb