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Q1. A lightbulb emits a spherical wave. If the intensity of the emitted light is 1.2 W/m2 at a distance of 2.5 m from the bulb, what is the intensity at the distance of 4.8 m?
Q2. A 18.0 kg block is dragged over a rough, horizontal surface by a constant force of 77.6 N acting at an angle of 35? above the horizontal. The block is displaced 10.8 m, and the coefficient of kinetic friction is 0.149.
The acceleration of gravity is 9.8 m/s2. If the block was at first at rest, find out its final speed.
Find out the depth of the kerosene
Determine the greatest vertical displacement of the pendulum
How far will it travel before becoming airborne
What is magnitude of the unknown force
Illustrate the cause of the components accelerating from rest down the conveyor.
Decide the speed with the rock is thrown
A bullet of mass 0.0022 kg initially moving at 496 m/s embeds itself in a large fixed piece of wood and travels 0.64 m before coming to rest. Imagine that an acceleration of the bullet is constant.
Find out distance the two drivers travel
Assume that a binary star system consists of two stars of equal mass. They are observed to be separated by 310 million kilometres and take 4.0 Earth years to orbit about the point midway between them.
W hat is the downward acceleration of the blue spool
What is the frictional force
Find out separation between the two sources
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