Mộtviênđạncókhốilượngm=10kgđangbayv ớivậntốcv=100m/sthìgặpmộtbảngỗdàyvà cắmsâuvàogỗmộtđoạns=4cm. Tìma, Lực cản trung bình của gỗ lên viên đạn. b, Vận tốc của viên đạn sau khi ra khỏi bản gỗ nếu bản gỗ chỉ dày d = 2 cm

Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33

(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.

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?