It is easier to to pull the bucket of water from well until it is inside the water but difficult out of water? why

Which of the following statements is good advice to prevent becoming overly emotional? A. There is no way to prevent becoming overly emotional. B.

Light rays bend as they pass from air into water at an angle (not 90 degrees). This is refraction. Which quantity doesn't change when light refracts? 1. average speed of light 2. wavelength of light 3. index of refraction of the material 4.

A car (mass 1 kg) on a frictionless track collides with a stationary car (mass 0.5 kg). The velocity of the first car before the collision is 2 m/s. The velocity of the 1st car after the collision is 1 m/s.

Scientific laws are so complex that they can rarely be explained by mathematical equations. True or false?

What is the difference between a negative change in position and a negative velocity?

Which of these is the most likely reason why the Steady State Theory of origin of the universe has been rejected?

The formula for calculating power is work divided by time (power = work : time). What are two ways of stating the same relationship? work = power : time, work = power * time, time = work : power, time = work * power, power = work * time

What does newton's first law predict will happen to a person riding in a car that is moving in circular motion?

One of the main reasons steel is used more widely than iron is because it's lighter softer stronger than iron

What is the frequency of a wave with a velocity of 21.2 m/s and a wavelength of 8.3m?