According to Ptolemy's model of the movement of celestial bodies, A. the sun is the center of the universe. B. the earth rotates around the moon. C. planets orbit in circular paths around the earth. D. the earth rotates around the sun.

Electro negativity increases when atoms __. (Apex) CHECK ALL THAT APPLY (two answers) a. have a small atomic radius b. have a large atomic radius c. are located on the left on the per. table d. are located on the right on the per. table

How fast must a 70 kg student be running to have a kinetic energy of 568 J?!

A block of wood has density 0.50 g/cm3 and mass 1 500 g. it floats in a container of oil (the oil's density is 0.75 g/cm3). what volume of oil does the wood displace?

Compare and contrast mechanical and electromagnetic waves

Which material will displace a volume of water

3/129 A 175-lb pole vaulter carrying a uniform 16-ft, 10-lb pole approaches the jump with a velocity v and manages to barely clear the bar set at a height of 18 ft. As he clears the bar, his velocity and that of the pole are essentially zero.

A few years ago, Serena Williams dived to hit a tennis ball right after it bounced off the ground. The ball bounced on the ground 10.3 m from the net, and after Serena hit the ball it flew over the 0.

A force of 1.25x103N is required to lift an object that is under the influence of an acceleration due to gravity of 7.86ft/sec2. What is the object's mass in kilograms?

Which of these events is an example of the Doppler shift? The amplitude of a wave on a string increases as the frequency decreases. The amplitude of sound from a tuning fork decreases due to damping.

One disadvantage of this type of power is that it still pollutes the air. biomass geothermal power hydropower solar power You want to create a new warming appliance that is safe.