Which are the components of a typical refracting telescope? hints?

Which part of a scientific argument must be supported by valid data? claim evidence reasoning theory

A weight of 18,000 lb is supported on a rectangular base plate that is 9 in. wide and 2 ft long. the base plate rests on a concrete slab. determine the stress that the base plate exerts on the concrete slab. express your answer in units of (a) lb/in.

How fast (as a percentage of light speed would a star have to be moving so that the frequency of the light we receive from it is 13.0 % higher than the frequency of the light it is emitting?

At a location, rainwater runs off the face of a cliff that is 15 meters high. How is the face of the cliff likely to change over time? Weathering by water would cut its middle deeper than the top.

Cientists have observed a sudden explosion in the sun followed by rapid changes in the sun's brightness. Which of these events would most likely occur due to this solar condition?

A tennis ball may leave the racket of a top player on the serve with a speed of 60.0 m/s. If the ball's mass is 0.0600 kg and it is in contact with the racket for 0.

Cells are known as the foundation of all life. How have these small structures changed our planet?

What does it mean to dissolve something

Why is a neutral object attracted to a charged object?

The international space station revolves around earths surface. which of the following statement s is true? a. it has no energy because it is stationary b. it has potential energy, but does not have kinetic energy c.