Ball enters the strike zone with a speed
In a Little League baseball game, the 145 {\rm g} ball enters the strike zone with a speed of 15.0 {\rm m/s}. The batter hits the ball, and it leaves his bat with a speed of 20.0 {\rm m/s} in exactly the opposite direction.
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Determined the amount of heat transferred to the air, in kJ, while increasing the temperature to 1200 K. Assume air has the constant specific heats evaluated at 300 K.
Liquid mixtures of sodium and potassium are used in some nuclear reactors as coolants that can survive the intense radiation inside reactor cores.
During the process there is a heat transfer of 60 kJ from the ideal gas to the surroundings. Determine the volume and pressure at the end of the process.
An air-water vapor mixture at 0.1 Mpa, 30°C, 80% RH has a volume of 50 m3. Calculate the specific humidity, dew point, wet bulb temperature, mass of dry air and mass of water vapor.
Estimate the moisture picked up by 1 kg of dry air, and the total enthalpy change between the entering and leaving streams expressed per unit mass of dry air. Ans. 0.0864 kJ/kg air, 220 kJ/kg air.
If the coefficient of static friction between tires and pavement is 0.55, calculate the minimum torque that must be applied to the 70 cm-diameter tire of a 980 kg automobile in order to "lay rubber" (make the wheels spin, slipping as the car accel
What percentage of the water flow rate must be supplied as make-up water to replace the water evaporated into the air stream?
The three capacitors C=2.0 uF (micro Farad) in parallel are connected across a 30- battery. A. Find the charge on each capacitor. B. Find the potential difference across each.
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Bearing in mind that there may be several, choose a social, behavioral, or cultural factor associated with your selected domestic violence
Based on information provided in Ch. 11 & 12, how do you define "being an adult"?
Early food experiences can impact development over several learning domains, including Social and Emotional Development, Language
Describe the results, including any scores. Result: E6% Extraverted Action oriented, Outgoing, Expressive, Hands-On S17% Sensing Traditional,
Suppose that a group of researchers would like to explore how we perceive objects in the real world, rather than just in a laboratory
Examine historical literature to the most current period to see the growth of romanticism and EXISTENTIALISM. any major developments
Adler believed that your birth order determines, to a large extent, your personality. He stated that your traits reflect, somehow, how you have achieved