Simple machines make a job easier to perform by
a. decreasing the amount of work
b. decreasin...
Physics, 12.06.2020 20:57 hardwick744
Simple machines make a job easier to perform by
a. decreasing the amount of work
b. decreasing the amount of friction
c. decreasing the amount of force and/or changing the direction of force
d. only lower the amount of force
Answers: 1
Physics, 22.06.2019 19:30
The ability to make things happen is also called a. heat b. force c. matter d. energy
Answers: 2
Physics, 23.06.2019 00:00
Three resistors are connected in series across a 15-v power supply. if the potential drops across resistors 1 and 2 are 4.1 volts and 3.1 volts, what is the exact potential drop (in volts) across resistor 3?
Answers: 2
Physics, 23.06.2019 01:30
When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(ii) sulfate is reduced to lead at the cathode and oxidized to solid lead(ii) oxide at the anode. suppose a current of is fed into a car battery for seconds. calculate the mass of lead deposited on the cathode of the battery.
Answers: 3
Physics, 23.06.2019 02:30
Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?
Answers: 1
Mathematics, 18.12.2020 20:50
Mathematics, 18.12.2020 20:50
Spanish, 18.12.2020 20:50
Mathematics, 18.12.2020 20:50
Arts, 18.12.2020 20:50
Biology, 18.12.2020 20:50
Mathematics, 18.12.2020 20:50
Mathematics, 18.12.2020 20:50
History, 18.12.2020 20:50
Mathematics, 18.12.2020 20:50
Mathematics, 18.12.2020 20:50