Is cutting a string physcal or chemical change

A beach ball is rolling in a straight line toward you at a speed of. 5 meters per second. It's momentum is. 25 kgxm/sec what is the mass of the ball

A sports car accelerates from a standing start to 100 mi/h in 4.61s. find the acceleration in ft/s^2

When two bodies are charged, the total charge before and after charging remains the same because of: a. quantization of charges c. law of induction b. conservation of charges d. Coulomb's law

Is velocity a scalar or a vector

If an airplane is traveling at 500 mph and a fly is flying forward inside the airplane is the fly traveling faster than the airplane?

A CFL bulb has an efficiency of 8.9% and a power of 22 W. How much light energy does the lightbulb produce in 1 second

Which of the following is true of high clouds?

A ferris wheel takes 5 minutes to complete one full rotation, what is the angular velocity of the ferris wheel

A heat engine has a thermal efficiency of 45%. how much power does the engine produce when heat is transferred into it at a rate of 109 kj/hr?

Dos pelotas de tenis se lanzan verticalmente, hacia arriba y desde el mismo punto, con 2 s de diferencia. La velocidad inicial de la primera es de 20 m/s, y la de la segunda, de 30 m/s.