A force of 3kN acts on a car to make it accelerate by 1.5m/s/s. What is the mass of the car?

The softest and hardest minerals are: softest hardest

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

70 give a real life example showing how sensory neurons work with the motor neurons