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A lead block of mass 2kg falls from a height h to the ground. The specific heat capacity of lead is 120J/kgk and the rise in temperature is 0.4°C. Calculate the height
γ=1.4
(Neglect radiation)
Ans 1s
Ans 3.35w
C and discharges 3000kJ of
heat to a building to maintain it at 20^oc
C. What is the COP of the heat pump? What is the
minimum required cycle network? Please this is the right answer i need the solution. (1.5, 2000kJ)
A 22 kg dog takes advantage of its owner's absence to jump up on the furniture. It sits on a 1.2 meter long coffee table, 0.4 m from the right side. The table top has a mass of 5 kg and each leg is attached 0.1 m from the ends of the table. Find the force from the right and left legs of the coffee table. answer
A ball player hits a home run, and the baseball just clears a wall 18.8 m high located 115.0 m from home plate. The ball is hit an an angle of 35° to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.0 m above the ground.
(a) What is the initial speed?
(b) How much time does it take for the ball to reach the wall?
(c) Find the components of the velocity and the speed of the ball when it reaches the wall
