Who was brilliant mathematician used the data of tycho brahe to prove accuracy of copernicus basic ideas of motion of planets?

What can you use to test substancea for their pH value if you dont have a strip of litmus paper handy?

Which surface produces the least friction when someone walks on it A. carpet B. ice C. sand D. wood floors

During a tennis serve, a racket is given an angular acceleration of magnitude 150 rad/s^2. At the top of the serve, the racket has an angular speed of 12.0 rad/s. If the distance between the top of the racket and the shoulder is 1.

A temperature of a 50 kg block increases by 15°C when 337,500 J thermal energy are added to the block. what is the block made of?

The rate at which an object's velocity changes is called its

A truck travels down the highway at a speed of 110 km/hr. How long does the trip last if the truck covered 2200km?

Could tests be performed to support the clamim?

A carpenter is working on a house two blocks away. you notice a slight delay between seeing the carpenter's hammer hit the nail and hearing the blow. at what time does the event "hammer hits nail" occur?

There have been books written about how blood type affects personality or body shape. Knowing that blood type is determined by antigens on erythrocytes, are these claims scientifically valid? O True O False

A stone is dropped from a 80m bridge. How long does it take to fall?