Aboy is exerting a force of 70 n at a 50-degree angle on a lawn mower. he is accelerating at 1.8 m/s2. round the answers to the nearest whole number.
what is the mass of the lawn mower?
kg
what is the normal force exerted on the lawn mower?
n

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.