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A graph model shows the force on the hockey when the racket hits the puck in a shot. The disc weighs 160 g and is at rest before hitting. What is the speed of the puck after hitting? Give the answer using km/h
A block of wood weighs 65g in air. A lead sinker weighs 70g in water. The sinker is attached to the wood and both together weighs 65g in water. Find the relative density of the wood.
Hockey, which slides at a speed of 3.5 m/s, is hit in the sliding direction. During the stroke, the racket applies a force of 32 N to the puck for 0.17 seconds. At what speed does the puck move after the stroke? The weight of the disc is 150 g. Use the positive direction marked on the image on the invoice.
A ball with a mass of 0.30 kg hits the wall at a speed of 5.0 m/s and bounces back at a speed of 4.0 m/s.
Calculate the change in ball momentum.
A 1-kg object moving at 1 m/s undergoes a one-dimensional elastic collision with a 2-kg object initially at rest. What is the speed of the 1-kg object after the collision?
A plane makes intercepts of 1, 2 and 3 Å on the crystallographic axes of an orthorhombic crystal with
a:b:c = 3:2:1. Determine the Miller indices of this plane.
Define packing fraction and find its value for a body-centred cubic structure
. Determine the effective number of lattice points for a face-centred cubic lattice
Find the angle between normal to the planes (111) and (121) in a cubic unit cell.
Define the following terms:
i. Basis
ii. Primitive cell
iii. Brillouin zone
iv. Unit cell
v. Reciprocal lattice
