Balance the nuclear equation 43
19K −→ 43
20 Ca + ?
1. ? = 1
0n
2. ? = 1
1p
3. ? = 43
18Ar
4. ? = 0
−1
β
5. None of these
6. ? = 43
−1
e
7. ? = 0
1
e

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

What is the momentum of a 2 kg object moving at 15 meters per second

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)