if a sound wave has a frequency of 250 hertz and a length of 1.3 meters, what is the speed of the sound wave?

What is population density?

If the spheres are now brought close to each other, but do not touch, describe how the charges will be distributed on their surfaces.

Your partner has been working on your group's circuit and has left the work area. before you begin working on the circuit, what should you do to ensure that the circuit is not active and prevent yourself from getting a shock?

Suppose a 0.3-kg mass on a spring that has been compressed 0.10 m has elastic potential energy of 1.0 j. how much further must the spring be compressed to triple the elastic potential energy?

Which type of reaction is NaCl + AgNO3 → NaNO3 + AgCl?

Why is it important for engineers to design bumper cars safely

What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 m wide and 9.00 m below the top of the cliff?

Which statement describes how light behaves when it strikes a translucent material? A. Light is scattered. B. Light is transmitted. C. Light is reflected. D. Light is absorbed.

A certain gas is present in a 15.0 l cylinder at 2.0 atm pressure. if the pressure is increased to 4.0 atm the volume of the gas decreases to 7.5 l.

Choose all the answers that apply. To qualify as a planet, a celestial object must: have an irregular shape revolve around the sun orbit in a clear area have enough gravity to have a spherical shape have a satellite