Which of the following phenomena is taking place when sound waves are reflected from a surface along parallel lines?

a. Diffusion

b. Absorption

c. Refracting

d. Focusing

What does it mean for data to be reproducible? how would you conduct an experiment in such a way as to get data reproducible?

Consider a train moving at a constant velocity of 30 m/s. If the engines provide 4000 N of thrust, what is the frictional force acting on the train?

A student performs an experiment to determine the density of a sugar solution. They obtain the following results: 1.71 g/mL, 1.73 g/mL, 1.66 g/mL, 1.68 g/mL. If the actual value for the density of the sugar solution is.

Airbags will deploy no matter from what angle your car is hit.

A car is traveling in a straight line at a constant speed. The car's engine is exerting a constant force on the car. Explain why the car is not accelerating.

A digital thermometer reads 15 degrees Celsius, what is the uncertainty?

Determine the magnitude of the effective value of g⃗ at a latitude of 60 ∘ on the earth. assume the earth is a rotating sphere.

What characteristic of a planet determines the acceleration due to gravity on it?

Which set of terms best defines what affects kinetic energy and potential energy, respectively? position, gravity gravity, position velocity, height height, velocity

You are operating a powerboat at night. You see green and white lights on another boat. What should you do?