Which of the following safety devices provides a weak link in a circuit that will melt if it received too much current, thus breaking the circuit and stopping the flow of electricity? (1 point)
a. circuit breaker
b. fuse
c. gfci
d. insulation

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

The temperature in gavin's oven is a sinusoidal function of time. gavin sets his oven so that it has a maximum temperature of 280°f and a minimum temperature of 240°. once the temperature hits 280°, it takes 20 minutes before it is 280° again. gavin's cake needs to be in the oven for 30 minutes at temperatures at or above 270°. he puts the cake into the oven when it is at 260° and rising. how long will gavin need to leave the cake in the oven? (round your answer to the nearest minute.)

The basketball coach tells his team to run sprints back and forth across the court, which is 30 m long. they start at the left end of the court, run back and forth 6 times, then end back at the left end of the court where they began. what distance did they run? what is their displacement?