If 50,000 J of heat are added to 0.9 kg of water, which has a specific heat of 4,184 J/(kgoC) and is at an initial temperature of 25oC, what is the final temperature of the water (in oC)

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above

3. which is not a primary color of light? blue red green yellow