Ametal ball of mass 100 g is heated to 90°c and then cooled to 25°c. the heat lost in the process is 2.5 kj. another metal ball of mass 200 g is heated to 90°c and then cooled to 25°c. the heat lost in the process is 5.0 kj. what can be concluded from the data?

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

Determine the maximum r-value of the polar equation r =3+3 cos 0

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.