một vật có khối lượng là 30kg bắt đầu chuyển động nhanh dần đều và sau khi đi được 20cm thì có vận tcs 6km/h lực tác dụng vào là

Awheel rotates without friction about a stationary horizontal axis at the center of the wheel. a constant tangential force equal to 82.0 n is applied to the rim of the wheel. the wheel has radius 0.150 m . starting from rest, the wheel has an angular speed of 12.8 rev/s after 3.88 s. what is the moment of inertia of the wheel?

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion