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At the surface of a freshwater lake the pressure is 106 kPa.
(a) Determine the pressure increase in going 34.9 meter below the surface?
(b) Find the approximate pressure decrease in going 39 meter above the surface?
A learner (m = 66 kilogram) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.04 second. Estimate from what height did the student fall
A loop of wire (resistance = 2.0 m?) is positioned as shown with respect to a long wire which carries a current. If d = 1.0 cm, D = 6.0 cm, and L = 1.5 m, what current is induced in the loop at an instant when the current in the wire is increasing at..
Consider an infinite straight wire with a current i. Derive asymbolic expression for the magnetic field at a distance r from thewire, by using either Ampere's law, Biot and Savart law, to showthat this magnetic field is given by B(r)=u0i/2pir
A copper rod is fastened securely at both ends to immovable supports. What is the magnitude |?T| of the change in temperature of the rod when it ruptures
Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt. The snowmobile and its rider have a mass of138 kg. Under the..
A 302g ball is tied to a string. It is pulled to an angle of 6.00 degrees and released to swing as a pendulum. A student with a stopwatch finds that 17 oscillations take 12.0s. How long does the string.
A flask is filled with 1.55 L (L = liter) of a liquid at 98.7 °C. When the liquid is cooled to 15.7 °C, its volume is only 1.32 L, however. obtain the coefficient of volume expansion of the liquid
We are not normally aware of the gravitational or electric force between two ordinary objects. What is the reason in each case? Give an example where we are aware of each one and why.
A string that is under 47.0N of tension has linear density 5.80g/m. What is the maximum velocity of a particle on the string
The peak value of the ac current in a circuit is 6.0 A, and peak value of the ac voltage applied to the circuit is 4.7 V. What is the average power delivered to the circuit?
What is the surface temperature of Betelgeuse, a red giant star in the constellation of Orion, which radiates with a peak wavelength of about 970 nm? Rigel, a bluish-white star in Orion, radiates with a peak wavelength of 145 nm. Find the temperature..
Two slits spaced 0.410mm apart are placed a distance of 71.0cm from a screen. What is the distance between the second and third dark lines of the interference pattern on the screen
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