Trong từ trường đều có cường độ H = 1000A/m, xét một diện tích phẳng S = 50cm2, sao cho các đường sức từ tạo với mặt phẳng của diện tích S một góc 300. Tính từ thông gởi qua diện tích đó

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

Why don't you see your reflection in water with waves or repples

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?