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A bedroom bureau with a mass of 37 kg,including drawers and clothing, rests on the floor.
(a) If the coefficient of static frictionbetween the bureau and the floor is 0.45, what is the minimum horizontal force a person must apply to start the bureau moving?
An x ray with a wavelength of 0.100 collides with an electron that is initially at rest. What is the final kinetic energy of the electron
When a certain photoelectric material is illuminated with red light (?=715) and then blue light (?=400), calculate the work function of the material
Its thermal conductivity is 7.50×10?2W/(m?K) ; If the temperature difference between opposite faces is 84.5?C, how much heat flows through the slab in 1 day
The basic concepts in optics.
in a youngs double slit experiment a screen is placed 75.0 cm from two slits spaced 0.450 mm apart. a if the slits are
The needle of a sewing machine moves up and down in the same hermonic motion its driving force comes from a rotating wheel that is powered by an electric motor. how do you imagine that theup-and-down needle comapres with the period of the rotating..
A nearsighted patient's far point is 0.521 m from her eyes. What is the distance between her eyes and the glasses
At Earth location, the intensity of sunlight is 1.5 kW/m2. by how much would Earth's mass increase in 1 day
A ball is thrown straight upward (along the y-axis) with an initial velocity of 9m/s from the top of a building located 20 m above ground. Find the maximum height of the ball
An object is thrown upward with a speed of 14 m/s on the surface of planet X where the acceleration due to gravity is 3.5 m/s2
A 2.4 kg mass is placed on top of a vertical spring. the spring is compressed 4.2 cm. What is the energy stored in the spring
the intensity of the sound from a certain source is measured at two points along a line from the source. the points are
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