The scientist who suggested that atoms contain a hard core containing most of the mass of an atom was:

Which is an example of a stage? O A Number of words spoken O B. Making two-word sentences O C. Focusing on an object O D. Reading two books a week

Which statement related to particle and wave properties of matter is correct? which statement related to particle and wave properties of matter is correct? interference patterns are observed when a wave passes through a barrier with two slits?

Aristarchus measured the relative sizes of the Earth, Moon, and Sun using eclipses and phase timings. Since the Moon is smaller than the Earth and orbits the Earth and the Earth is smaller than the Sun, he deduced that the Earth must orbit the Sun.

A 3.0-kilogram cart possesses 96 joules of kinetic energy. Calculate the speed of the car.

You need to raise a heavy block by pulling it with a massless rope. You can either a) pull straight up height h or b) pull up a long, frictionless plane inclined at a 15 degree angle until it has reached height h.

A building that is 105.50 ft. feet tall is casting a shadow that is 37.50 ft. feet. If the building next to it, is casting a shadow of 41.00 ft. feet, how tall is that building?

What is the technical name for super glue type adhesives

On his fishing trip Justin takes the boat 25 km south. The fish aren't biting so he goes 10 km west. He follows a school of fish 15 km north. What distance did he cover? What was his displacement?

n open rectangular tank is filled to a depth of 2 m with water (density 1000 kg/m3). On top of the water there is a 1 m deep layer of gasoline (density 700 kg/m3). The width of the tank is 1 m (the direction perpendicular to the paper).

Is the sun considered a star?