One Time Pad Recall OTP. Assume that the RNG stopped working in the middle of the key generation and generated k1, a key which length is half the length of message m. Answer the following questions. (a) If we use k1 two times (i. e. use k1||k1 as the key, where || denotes concatenation) to encrypt m using the OTP scheme, will the resulting ciphertext be secure

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.