Typically, water runs through the baseboard copper tubing and, therefore, fresh hot water is constantly running through the piping. however, consider a pipe where water was allowed to sit in the pipe. the hot water cools as it sits in the pipe. what is the temprature change, (δt), of the water if 193.0 g of water sat in the copper pipe from part a, releasing 2665 j of energy to the pipe? the specific heat of water is 4.184 (j/g)⋅∘c.

Aroll in a paper machine is powered by a separately excited dc machine. operating point 1 (under load): the roll typically operates at 764 rpm and must provide 301 nm of torque to oppose the load of the paper. the armature voltage is 230v for this operating point operating point 2 (no load): when the load is removed the speed of the roll increases to 900 rpm (the field characteristics are unchanged) la ea dev m (a) calculate the maximum torque (units of nm) that the motor can supply with this applied voltage (b) calculate the value of the armature resistance, ra (in ohms) (c) at operating point 1 (loaded condition), the field current, i, and the total input power (armature field), are measured to be to be 10 a and 28,600 w respectively. use this information to calculate the value of the field resistance, rf (in ohms). (d) (d) at operating point 1 (loaded condition), calculate the motor efficiency. express your answer as a percent to at least 2 significant digits. (d) if the field voltage is reduced by 1/2, calculate the new stall torque (in nm) of the motor (f). if the field voltage is reduced by 1/2, calculate the new no-load speed (in rad/sec)

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?

The ph is the a.independent variable b.the dependent variable c.control group