What is the mass in mev and in kg (both to decimal places) of an electron whose speed is half the speed of light? mass in mey- mass in kg- b. what is the momentum of this electron, in kg. s-. and in mev (both in 3 decimal places)? momentum of this electron, in kg·s-1= momentum in mev/c c. what would be the energy (in ey) of a photon with the same speed energy of photon in ev-

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Gravity is pulling an object into the sun. the closer the object gets to the sun, the greater the gravitational force that acts on the object, increasing its acceleration. a line graph plotting the speed of the object against time would have which shape? a: straight line of positive slope b: curved line that slopes upward c: curved line that slopes downward d: straight line of negative slope

Basilisk lizards can run across the top of a water surface (see the figure). with each step, a lizard first slaps its foot against the water and then pushes it down into the water rapidly enough to form an air cavity around the top of the foot. to avoid having to pull the foot back up against water drag in order to complete the step, the lizard withdraws the foot before the water can flow into the air cavity. if the lizard is not to sink, the average upward impulse on the lizard during this full action of slap, downward push, and withdrawal must match the downward impulse due to the gravitational force. suppose the mass of a basilisk lizard is 93.7 g, the mass of each foot is 3.37 g, the speed of a foot as it slaps the water is 1.15 m/s, and the time for a single step is 0.531 as. (a) what is the magnitude of the impulse on the lizard during the slap