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Liquid water extinguishes a flame two ways one by absorbing much of the heat that the fire needs to sustain itself and two by wetting, which block oxygen from reaching the burning material.
A gamma ray photon produces an electron-positron pair each with a kinetic energy of 210 KeV. What was the energy and wavelength of the photon
In a strictly scientific experiment, a student athelete throwsrocks out the window in all directions, Find the height h of the window above the ground
Show that in the Bohr model, the frequency of revolution of an electron in its circular orbit around a stationary hydrogen nucleus is f = me4/4µ02n3h3.
If a electron after being accelerated by a potential difference of 100 V enters in a uniform magnetc field of 1T perpendicular. Calculate its radius of circular path described by it
The highest string on a guitar has a vibrating length of 60 cm and a vibrating mass of 0.9 g. What is the wavelength of the waves on the string
Body A in the figure weighs 122 N, and body B weighs 33.5 N. The coefficients of friction between A and the incline are, What is the acceleration of A if A is initially at rest
The combination of an applied force and a friction force produces a constant total torque of 36.8 N · m on a wheel rotating about a fixed axis. Find the magnitude of the torque due to friction
What is the energy density. Find out the lowest frequency that permits standing waves in both strings with a node at the junction. The standing wave pattern in each string may have a different number of loops.
Blood flows through a vessel at a rate of 3 ml/s. It contains albumin, which has a molecular weight of 75000, at a concentration of 4.5gm per 100 ml. What is the concentration of albumin
When a certain metal is illuminated by light of frequency 3.3 multiplied by 1015 Hz,a stopping potential of 6.9 V is required to stop the most energetic ejected electrons. What is the work function of this metal?
A high-voltage transmission line with a resistance of 0.345 ?/km carries a current of 1.45 kA. What is the power loss due to resistance in the line
A 2 kg block starts at rest and slides down a frictionless ramp that makes an unknown angle with respect to the horizontal floor below. What is the angle that the ramp makes with the floor
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