Physics, 23.12.2019 19:31 2023greenlanden
An object is projected vertically upward from ground level. it rises to a maximum height h. if air resistance is negligible, which of the following must be true for the object when it is at a height h/2? 1. its speed is half its initial speed 2. its kinetic energy is half of its initial ke 3. its potential energy is half of its initial potential energy 4. itrs total mechanical energy is half of its initial value 5. its total mechanical energy is half of its value at the highest point
Answers: 1
Physics, 21.06.2019 17:00, Pizzapegasus1
Can someone explain to me how to do this problem ?
Answers: 1
Physics, 21.06.2019 23:30, southerntouch103
A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?
Answers: 3
Physics, 22.06.2019 04:10, brianamelara
Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward
Answers: 3
Physics, 22.06.2019 05:30, GreenHerbz206
Could someone . i have tried to solve myself but my calculation is off
Answers: 3
An object is projected vertically upward from ground level. it rises to a maximum height h. if air r...
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