How could a food web based in water be connected to a food web based on land? Give an example.

Sound travels at a speed of about 344 m/s in air. You see a distant flash of lighting and hear the thunder arrive 7.6 seconds later. How many miles away was the lighting strike? (assume the light takes essentially no time to reach you.

Instructions:Select the correct answer. A meteor is approaching Earth. Which statement about its motion is true? The meteor travels upward relative to Earth. The meteor accelerates. The meteor is out of Earth's gravitational force field.

A car is moving with a constant acceleration. At t = 5.0 s its velocity is 8.0 m/s and at t = 8.0 s its velocity is 12.0 m/s. What is its displacement in that interval of time?

When an electron in a hydrogen atom is in the n = 3 state, is it on average closer to, farther from, or the same distance to the nucleus than in the ground state?

A child jumps on a trampoline. What causes the child to rise in the air

A proton accelerates from rest in a uniform electric field of 610 N/C. At some later time, its speed is 1.4 106 m/s. (a) Find the magnitude of the acceleration of the proton.

What does the law of conservation of matter state?

Heat flows due to: Select one: a. conduction b. convection c. radiation d. all of the above

A mine elevator is supported by a single steel cable 0.0125 m in diameter. The total mass of the elevator cage and occupants is 6450 kg. By how much does the cable stretch when the elevator hangs by 362 m of cable? (Neglect the mass of the cable.

Express the displacement Δy of an object travelling with acceleration a during a time period Δt that has an initial velocity vi.