A Cannon shell is fired straight up from the ground at an initial speed of 225 m/s. after how much time is the shell at a height of 620 m above the ground and moving down.

Why is a torque wrench necessary totighten bolts correctly on an engine head cover that sits on a gasket between it and the engine block? What might happen if a regular wrench is used to tighten the bolts?

When white light shines on a film and violet light is transmitted through the film, the film added violet light to the white light absorbed all the colors except violet from the white light added ultraviolet light to the white light absorbed

Which of these is an element? A. Water B. Potassium C. Sugar D. Salad

What did the accident at the nuclear power plant in Chernobyl in 1986 demonstrate about the use of nuclear power that had not been previously demonstrated? The byproducts of the process are radioactive.

Find the pressure difference (in kPa) on an airplane wing if air flows over the upper surface with a speed of 125 m/s, and along the bottom surface with a speed of 109 m/s. [Express answer in TWO decimal places]

You are going to develop some photographic film that involves a chemical reaction between the developer, which you will mix yourself, and a chemical on the surface of the film.

Would time travel mean that parallel universes would be created off our linear time sequence to ensure the universe doesn't collapse itself because of significant events being drastically changed in the way it shapes the universe?

What is the central core of hair

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet

What does a hurricane hunter do