Tác dụng lên một bánh xe bán kính R = 0,5m và có mômen quán tính I = 20kg. m2 , một lực

tiếp tuyến với vành bánh Ft = 100N. Tìm:
a. Gia tốc của bánh xe?
b. Vận tốc dài của một điểm trên vành bánh sau khi tác dụng lực 10 giây biết rằng lúc đầu bánh xe
đứng yên?

Suppose that recording station n is located 200 km north of the epicenter of an earthquake, and recording station s is located 100 km south of the epicenter of the same earthquake. which of the following statements would be true?

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.