Who first introduced the idea that the Sun is the center of the universe?

A. Nicolaus Copernicus

B. Albert Einstein

C. Johannes Kepler

D. Edwin Hubble

Which of the following statements best describes the basic structure of an atom? a. Electrons and protons are in motion around a nucleus that contains neutrons. b. Neutrons are in motion around a nucleus that contains protons and electrons. c.

The threshold of hearing is defined as the minimum discernible intensity of the sound. It is approximately 10âˆ'12w/m2. Find the distance d from the car at which the sound from the stereo can still be discerned.

A car travels 50 miles in 2.5 hours. Calculate the average velocity

4. A 15 V battery is connected to three capacitors in series. The capacitors have the following capacitances: 4.54F, 12uF and 32uF. Find the voltage across the 32uF capacitor.

A student claims that since the three phases have different amounts of energy, molecules in substances gain or lose energy only during phase transitions. Explain what is wrong with this student's reasoning.

What is a magnetic field and how does it interact with magnetic materials?

What is significant about holden sitting on the radiator?

Which of the following occurs in meiosis that does not occur in mitosis 1 fertilization occur 2 body cells are made 3 sex cells are made 4 cell division occurs

A hot air balloon is hovering in the air when it drops a 40 Kg food package to some lost golfers. If the package is dropped from an altitude of 500 m and air resistance can be neglected, how fast is the package moving when it hits the ground?

you often hear people particularly TV announcers talk about "high rate of speed" what do you think they mean according to the specifics of physics definitions what are they really saying