Awave created by a certain source travels from medium 1 into another medium 2. it is noticed that its velocity is faster in medium 2 than in medium 1. three students are discussing what happens to the wave as it moves into medium 2. student 1: frequency increases. student 2: wavelength increases. student 3: both change. which student is right?

When does your body conduct current more readily?

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)