The acceleration of gravity on earth is approximately 10 m/s2 (more precisely, 9.8 m/s2. if you drop a rock from a tall building, about how fast will it be falling after 3 seconds?

Which statement is true? Select one of the options below as your answer: A. Gas atoms subjected to electricity emit bright lines. B. Gas atoms absorb white light and emit a continuous spectrum of light. C.

Which part of the electromagnetic spectrum has the highest level of photon energy A. Radio waves B. x-rays C. visible light D. gamma rays

Classify Use periodic table to classify the elements potassium (K), Bromine (Br) and argon, (Ar) according to know likely their atoms are to do the following A-Lose electrons to form positive ions B-Gain electrons to form negative ions C-Neither

Mechanical waves, such as sound waves, travel fastest in what medium?

A cylindrical piece of aluminum is 6.00cm y'all and 2.00cm in radius how much does it weigh

A bicyclist is in a 50-km race. She says she had an average velocity of 35. What is missing in the cyclist's velocity? A. units only B. units and distance C. direction only D. units and direction

Which one of the following statements concerning emf is true? A) Emf is the work done in moving the current from one terminal to the other of an emf device.

A fan is a complex machine? True or false?

Which force does not operate at a distance of 1 m? A. Weak nuclear O B. Electric C. Gravitational D. Magnetic

The deflection of alpha particles in rutherford's gold foil experiments resulted in what change to the atomic model?