What's the speed of a sound wave through water at 25 Celsius

What are the change in internal energy if 250 j of hear is added to a system of 80 j of work is done by the system

You observe a distant galaxy. You find that a spectral line, resulting from an electron transition in hydrogen, is shifted from its normal location in the visible part of the spectrum into the infrared part of the spectrum. What can you conclude?

Why is the customer always right?

Which of the following is Not likely to put someone at risk for becoming involved in a unsafe online relationship? A. Feeling lonely or misunderstood B. being truthful and honest with his or her parents C. feeling overwhelmed by personal problems D.

If a toy car is on a ramp where does the car have the most and least amount of kinetic energy?

Which of the following are vector quantities? check all that apply. a. time b. displacement c. force d. mass

Imagine you are on a bus with a helium balloon tied on a string tied to the seat in front of you. the bus stops short to avoid running over a rabbit and you are thrown forward. what happens to the balloon in relation to the bus? 1. the balloon pops.

Give one reason why the density of iron is higher than the density of oxygen

In which region of the periodic table do the elements NOT normally react chemically with other elements? A. metals B. metalloids C. nonmetals D. noble gases

A hot air ballon was a mass of 400 kilograms moves across the sky with 3200 joules of kinetic energy. the velocity of the balloon is