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- a)What energy (in J) is dissipated by a lightning bolt having a 17,300 A current, a voltage of 1.40 ✕ 102 MV, and a length of 1.00 ms? J (b)What mass (in kg) of tree sap could be raised from 18.0°C to its boiling point and then evaporated by this energy, assuming sap has the same thermal characteristics as water?An accelerating voltage of 2.71 x 10³ V is applied to an electron gun, producing a beam of electrons originally traveling horizontally north in vacuum toward the center of a viewing screen 32.7 cm away. What is the magnitude of the deflection on the screen caused by the Earth's gravitational field? What is the direction of the deflection on the screen caused by the Earth's gravitational field? O up down O east west m What is the magnitude of the deflection on the screen caused by the vertical component of the Earth's magnetic field, taken as 20.0 μT down? mm What is the direction of the deflection on the screen caused by the vertical component of the Earth's magnetic field, taken as 20.0 μT down? O north O south O east O west Does an electron in this vertical magnetic field move as a projectile, with constant vector acceleration perpendicular to a constant northward component of velocity? O Yes O No Is it a good approximation to assume it has this projectile motion? O Yes NoA scientist just bought a very cool magnet, and would like to measure it’s strength. She takes a stripof copper with width 3.0cm, and a rectangular cross-section of 0.004m^2 and runs a current of 0.5Athrough it. She knows copper has a free charge density of 8.491× 10^28 m−3. She holds the magnetnear the strip, and measures a voltage across the sides of the strips, and her voltmeter reads 11.2 nV-what is the strength of her magnet?