What is an apparent change in the frequency of sound or light waves known as?

A string is 9.00 m long with a mass of 7.00 g. The string is held taut with a tension of 200.00 N applied to the string. A pulse is sent down the string. How long (in ms) does it take the pulse to travel the 9.00 m of the string?

If a charge is located at the center of a spherical volume and the electric flux through the surface of the sphere is φ, what would be the flux through the surface if the radius of the sphere were tripled?

Does Pascals law apply to solids?

How do you write the scientific name delis cactus correctly

As she climbs a hill a cyclist slows down from 25mi/hr to 6mi/hr 10 seconds. What is her deceleration?

An electron enters a region of uniform perpendicular en and bn fields. it is observed that thevelocity nv of the electron is unaffected. a possible explanation is:

Halley's comet orbits the sun roughly once every 76 years. It comes very close to the surface of the Sun on its closest approach. Estimate the greatest distance of the comet from the sun.

A 1.0 kg ball is thrown into the air with an initial velocity of 30 m/s. How much kinetic energy does the ball have?

Have scientists discovered a fifth fundamental force of nature?

To study the properties of various particles, you can accelerate the particles with electric flelds. A positron is a particle with the same mass as an electron but the opposite charge (+e). Express your answer in vector form.