A25 kg gazelle runs 3 km up a slope at a constant speed, increasing their elevation by 40 m. while running, they experience a constant drag force of 20 n. it then jumps a height of 2 m onto a ledge. what is the minimum take off speed required to make the jump?

Lin yao looks at the back of a spoon. how should she describe her reflection? upside down and smaller upside down and larger right-side up and smaller right-side up and larger

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)