A visible light emits light with a wavelength of 4.00x10^-7m.
Use Planck’s equation to calculate the energy of a single photon with the given wavelength.

a) 4.97x10^-19J
b) 8.84x10^-34J
c) 2.65x10^-26J
d) 8.84x10^-49J

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

Select all the correct answers.which two statements are true? a moving magnetic field creates an electric field.a constant magnetic field creates an electric field.a constant electric field creates a magnetic field.a moving electric field creates a magnetic field.resetnext