Which concept was supported by taking measurements of the same stars at night and then again during solar eclipses?

A child sits 6 m away from the center of the merry go round. The centripetal acceleration acting on the child' is 3.6 m/s^2. What is the tangential velocity of the child? A 4.65 m/s B 21.6 C 0.6 m/s D 1.67 m/s

A car advertisement claims their car can go from a stopped position to moving 60 miles per hour in 5 seconds. The advertisement is describing the car's acceleration. speed. velocity. direction.

ou are pushing a 20-kg box along a horizontal floor. Friction acts on the box. When you apply a horizontal force of magnitude 48 N, the box moves at a constant velocity. What is the magnitude of the frictional force on the box?

If you are at a train station and a train comes toward you, the train blows its whistle. as the train comes closer the whistle gets louder and as the train gets farther the whistle is quieter. What is this effect called?

A graph of the motion of a pendulum shows that it swings from + 5 centimeters to - 5 centimeters for each cycle. What is the amplitude of the pendulum?

A wave is a (blank) that carries (blank) from one place to another

The movement of thermal energy from hot to cold materials is called

A jar contains 30 ml of glycerin and 60 ml of corn syrup which liquid is on the top layer

What are optical fibres

Where in the body does neutral, acidic and basic (alkaline) solutions usually exist?