Hai điện tích điểm q1 = q2 =
5.10-8C đặt tại hai điểm A,
B trong không khí, cho AB
= 1...
Answers: 1
Physics, 21.06.2019 17:10
Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?
Answers: 1
Physics, 21.06.2019 19:00
How many neutrons does element x have if it’s stormy umber is 33 and it’s mass number is 95?
Answers: 3
Physics, 21.06.2019 19:30
Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.
Answers: 1
Physics, 22.06.2019 00:00
During physical science, ms. greene challenged her students to produce an energy transformation. james and jill wrapped a 4-inch nail with a coil of fifty turns of wire. they connected one end of the coil to one terminal of a knife switch. they connected the other terminal of the knife switch to the battery. finally, they connected the end of the coil to the other terminal of the battery. james held the tip of a 1-inch nail near the flat end of the 4-inch nail. jill closed the knife switch quickly and then opened it. the 1-inch nail was pulled toward the 4-inch nail. what is the best explanation of why the nail moved? a) electrical energy was converted to mechanical energy in the 1-inch nail. b) the 4-inch nail became an electromagnet and the magnetic force attracted the 1-inch nail. c) the electric current in the 4-inch nail was converted to mechanical energy in the 1-inch nail. d) the 4-inch nail had a positive charge and the 1-inch nail had a negative charge. opposites attracted.
Answers: 1
Mathematics, 21.08.2020 17:01
Mathematics, 21.08.2020 17:01
Mathematics, 21.08.2020 17:01
Physics, 21.08.2020 17:01
Mathematics, 21.08.2020 17:01
Computers and Technology, 21.08.2020 17:01