Johannes Kepler discovered the laws that bear his name by analyzing the observational data of which astronomer?

a. Tycho Brahe

b. Galileo Galilei

c. Sir Isaac Newton

d. Nicolaus Copernicus

A piano tuner uses a tuner to create a tone of 5.00 x 10² Hz. When a key on the piano is struck he hears 5 beats per second. What is a possible frequency of vibration for the piano string? 2500 hz 1300 hz 605 hz 495 hz

Compare the motion of the particles when the frequency is high to the low-frequency motionHow would you describe the difference?

The force acting on an object moving with constant acceleration is given by F = ma, where m is the mass of the object measured in kg, a is the acceleration in m/s2, and F is the force acting on the object, measured in newtons.

How are the forces observed related to the motion of the earth around the sun

If there were no energy lost to friction in a pendulum, then the pendilum bob would

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.