A 2.8 m -long rod has density λ in kilograms per meter of length described by λ=a+bx, where a = 1.7 kg/m, b = 1.9 kg/m2,and x is the distance from the left end of the rod. The rod rests horizontally with each end supported by a scale. What do the two scales read?
Express your answers in newtons, starting from the left scale, separated by a comma.

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.

What is the magnitude of the gravitational force acting on the earth due to the sun?

If frequency goes up, what happens to wavelength? does it get shorter or longer?