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Calculate the deBroglie wavelength of an electron moving at v= 2.2 x 10^2 m/s
the work function of a certain metal is 1.310-18 j. upon irradation with light of a given wavelength electrons are
An unknown piece of material with a mass of 5.1 kg and density of 1422 kg/m3 is suspended from a string, Determine the volume of the piece of material
The Olympic Flame at the 1992 Barcelona Olympics was lit by a flaming arrow shot from a point 60 meter horizontally and 24 meter vertically from the flame. Determine the initial speed necessary for the arrow
A motorcycle daredevil is attempting to jump across as many busesas possible (see the drawing). The takeoff ramp makes an angleθ = 17.0° above the horizontal, and the landing ramp isidentical to the takeoff ramp. The buses are parked side by side,..
A 27.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 35.0° with the vertical, Neglecting friction, find the child's speed at the lowest position
A 16 kg rock, m, is on the edge of a 90 m cliff, h, as shown in Figure 11-20. Assume that air resistance is negligible. What speed does the rock have as it strikes the ground
A chartered airplane flies 100 km east, then 350 km northwest, and then 150 km at 30° west of south. After an additional displacement, the plane is back where it started. Find the magnitude and the direction of the last leg of the journey.
a student slides her 80.0-kg desk across the level floor of her dormitory room a distance 2.00 m at constant speed. if
A slit of width 0.26mm is illuminated with monochromatic light of wavelength 540nm , and a diffraction pattern is formed on a screen 1.5mfrom the slit. What is the width of the central maximum
A copper pipe has an outside diameter of 5.000 cm and an inside diameter of 4.700 cm. What length of this copper pipe will have a resistance of 4.15 × 10-3 Ω?
a 20000kg- railroad freight car collides with a stationary caboose car. they couple together and 11 percent of the
A snowboarder starts from rest and rides 39.47 m down a snow-covered slope that makes an angle of 33.19° with the horizontal, How far will she travel along the flat snow
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