An alpha particle has a mass of 6.61 × 10−27 kg and bears a double elementary positive charge. Such a particle is observed to move through a 5.1 T magnetic field along a circular path of radius 0.19 m. The charge on a proton is 1.60218×10−19 C. What speed does it have

What is the frequency of a light wave with a wavelength of 620nm

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.