A rock tied to the end of a string moves in a circle of radius 1.2m with a constant speed of 3.0 m/s. Calculate the centripetal acceleration of the rock.

Do changes in speed and mass have the same effect on the kinetic energy of an object? Explain.

What is the term for vectors that lie in a straight line? A. Velocity B. Two-dimensional C. One-dimensional D. Displacement

A bike accelerates uniformly from rest to a speed of 8.20 m/s over a distance of 45.6 m. Determine the acceleration of the bike.

At 25°c three moles of gas occupy a volume of 4.0L at 1.9 kpa. if the volume increases to 8.0L what will the new pressure be

A straight wire carrying a 3.30-A current is placed in a uniform magnetic field of magnitude 0.272 T directed perpendicular to the wire. (a) Find the magnitude of the magnetic force on a section of the wire having a length of 12.7 cm.

The liquid contained in batteries that conducts electric charge is called the: solution, electrolyte, suspension, colloid

Someone jumped from a high altitude at 31,000m above the earth. he freefalled for 4 min and 36 secs with top speed of 988 mph

What does the law of reflection mean?

Compared with the peak wavelength given off by the sun, what is the peak wavelength given off by a hotter star? A.) shorter in wavelength and higher in energy B.) shorter in wavelength and lower in energy C.

4. Explain the doppler effect. Be sure to talk about how the wave changes, the perceived change hear by a person that an emitted sound is moving towards, and the perceived change hear by a person that an emitted sound is moving away from. 5.