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Suppose you are ablating a metal under water in a non-contact mode using a high-power laser. During the experiment you observe a light with different colours and under microscope you notice that the metal has been ablated.
(a) Explain how you would justify the colours origin and their importance?
(b) How the metal is ablated in a non-contact mode?
A 300 kg piano slides 4.50 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40.
A 10.0 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 100. find the work done by the Earth's gravity on the crate
The frequency of these radio waves is the same as the frequency at which the object oscillates. What is the spring constant of the spring?
(a) What is the magnitude of the frictional force? Express your answer as a multiple of mg. mg (b) What is the magnitude of the acceleration of the block? m/s2 Suppose that the friction coefficients are μs = 0.32 and μk = 0.26?.
a banked circular highway curve is designed for traffic moving at 55 kmh. the radius of the curve is 207 m. traffic is
Two vehicles A and B are traveling west and south, respectively, toward the same intersection where they collide and lock together. Before the collision A (total weight 1100 N) is moving with a speed of 73 m/s and B (total weight 1330 N ) has a sp..
The period of oscillation of a spring-and-mass system is0.50 s and the amplitude is 5.0 cm. What is the magnitude of the acceleration atthe point of maximum extension of the spring?
An object falls a distance h from rest. If it travels 0.5h inthe last 1.00s find the time and the height of its fall
A rock is thrown from the top of a 30 m building at an angle of 47° above the horizontal. If the horizontal range of the throw is equal to the height of the building, with what speed was the rock thrown
In 2004 there was a massive fish kill in Narragansett Bay. What was responsible for the massive fish kill? (You'll need to Google this as well)
A thin spherical shell of mass 0.25 kg and radius 0.15 m is released from rest from the top of a 3.0-m high ramp. What would the linear speed be at the bottom
A potter's wheel with rotational inertia 6.92kg⋅m2 is rotating freely at 19.3 rpm. The potter drops a lump of clay onto the wheel, where it sticks 48.0 cm from the rotation axis. With the clay on the wheel, the wheel's rotation rate is 17.4 rpm. ..
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