Which type of wave can travel without a medium

A cowboy at a dude ranch fills a horse trough that is 1.53 m long, 61 cm wide, and 42 cm deep. He uses a 2.0 cm diameter hose from which water emerges at 1.25 m/s. How long does it take him to fill the trough? Caution: 2.

Two bobsledders push a 232kg bobsled. The bobsled reaches an acceleration of 1.2x10^5 m/s^2. What is the force that the bobsledders needed to reach this acceleration?

Last question of the day Predict what will happen to the sun, the solar system, and the milky way in billions of years

The mass of an object is 50 kg. If its weight is 600N on a certain planet. Calculate the gravitational field strength of the planet.,

How much work is done if you push a box 200 meters with a force of 35 newtons answer?

How many turns are in the secondary coil of a step up transformer that increases voltage from 30 V to 150 V and has seven turns in the primary coil?

What is a nuclear bulge? a) The bulging corner of a spiral galaxy consisting of gas in the shape of a spiral sphere that circles a galaxy b) The bulging center of a spiral galaxy consisting of debris in the shape of a flattened sphere that circles a

Your friend of mass 50 kg can just barely float in fresh water. Calculate her approximate volume.

A flashlight beam strikes the surface of a pane of glass (n = 1.50) at a 61° angle to the normal. what is the angle of refraction?

Why is there controversy to the opinion that human contribution of carbon dioxide to the atmosphere is cause warming