22. (a) Prove that () +30m)+s()+...=2(º) +-() +(%) +... (b) What is the value of the...
12 If sin(2x + 7) = cos(4x – 7)º, what is the value of x? A 7 B 15 C 21 D 30
A ball is thrown straight into the air at a speed of 30m/s. At what time(s) is the object 10m above the ground? A stone is thrown upwards from the edge of a cliff 15m high. It just misses the cliff on the way down and hits the ground below with a speed of 35m/s. a. With what velocity was it released? b. What is its maximum height above the cliff? c. Plot y(t), v(t), and a(t)
22. Prove: if a, b, and c are odd, and a | b - c and a bc, then a | b and a c 22. Prove: if a, b, and c are odd, and a | b - c and a bc, then a | b and a c
a hockey puck has a mass of 170g and travels with a speed of 30m/s. what impulse is needed to slow the hockey puck down to 10m/s?
A myelinated axon conducts nerve impulses at a speed of 30m/s . What is the signal speed if the thickness of the myelin sheath is halved but no other changes are made to the axon?
If an elevator goes up with a speed of 3m / s. when it is 30m above ground level the cables break. Presiding over reasoning. a) Calculate the maximum height that the cabin reaches. b) If the safety brakes act automatically when the descent speed reaches the value of 5 m / s, determine the height at which the brakes act.
1. A car, travelling at 30m/s slows to 10m/s in 5 seconds. What was the acceleration? A). -6 m/s B) 4m/s C).-2 m/s D). -9.8m/s 2. A ball thrown straight up takes 3 seconds to reach its maximum height. The height is most nearly B). 45m C). 60m D), 90 m A). 30m 3. A driver of a car wishes to pass a truck on the highway. Her car can accelerate at a constant 5m/s'. How long does it take...
22. Prove: if a, b, and c are odd, and a | b - c and a bc, then a | b and a c
4. (3 points) Consider the following enthalpies of reaction: CaCz(s) + 2H20 (Ca(OH)2(s) + CH2(g) AH,º=-127.9 kJ/mol Cas) + 1/20 (g) - Cao(s) AH,º=-635.1 kJ/mol Cal(s) + H200 - Ca(OH) (9) AH,=-65.2 kJ/mol The standard enthalpies of combustion of graphite and C2H2(g) are -393.51 and -1299.58 kJ/mol, respectively. Calculate the standard enthalpy of formation of CaCz(s) at 25°C. Aside on enthalpy of combustion: Please note that the standard enthalpy of combustion will form H200, not H:09), if the substance includes...
2. Let A, B SR and suppose that ASB (0) Prove that A' S B' (ii) Hence, prove that A s B. 13) 14)