How far does a zebra travel if it gallops at an average speed of
25km/hr for 2 hours?...
Physics, 09.01.2021 04:20 alvaradorosana05
How far does a zebra travel if it gallops at an average speed of
25km/hr for 2 hours?
Answers: 2
Physics, 22.06.2019 06:30, mehokkj
Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?
Answers: 1
Physics, 22.06.2019 12:00, stephanieboyd
Explain why electric current cannot exist if a current doesn't have a voltage source.
Answers: 2
Physics, 22.06.2019 19:50, fili20
The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.
Answers: 3
Mathematics, 18.03.2021 01:00
Mathematics, 18.03.2021 01:00
Mathematics, 18.03.2021 01:00
Mathematics, 18.03.2021 01:00
Biology, 18.03.2021 01:00
Chemistry, 18.03.2021 01:00
Mathematics, 18.03.2021 01:00