눈이 쌓인 스키 슬로프가 수평과 35.0°의 각도를 이루고 있 다. 스키 점퍼가 슬로프에 낙하할 때, 눈덩이 하나가 튀어 오르는데, 그림 P3.26과 같이 최대 변위는 연직 방향과 16.07
를 이루고 크기가 1.50 m이다. 이 최대 변위의 (a) 표면에
평행한, (b) 표면에 수직인 성분을 각각 구하라.​

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)

Examples of states of consciousness include a. daydreaming b. dreaming during sleep c. hypnosis d. all of the above

Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?