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A 12kg block stays at rest on a horizontal surface without reasoning. A ball of 400g travels with a velocity of 16m/s with a direction 30o below the horizontal and crashes against the block and gets embedded in it. What are the vertical and horizontal components of momentum of the ball just before contact? With how much the velocity the block will slide above the surface after impact?
When t = 0 s, a flower pot on a window sill drops from rest to the sidewalk some 32.0 m below, How long was the pot in flight
You are given a concave mirror by focal length 40.0cm. You start with an object 50.0cm high at 160cm in front of the mirror. Draw the system and utilize the mirror equation to determine the characteristics of the image.
The images of astronomical and terrestrial telescopes are colored around the edges. Explain that. How can this "chromaticaberration" be avoided in practice?
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. how fast is the roller coaster traveling at the bottom of the dip
If a pump requires 9 ft (H2 O) NPSH and the liquid you are pumping has a vapor pressure of 4.5 psi at suction temperature. What suction pressure must you have to avoid pump cavitation
A cylinder which is in a horizontal position contains an unknown noble gas at 5.26 Ã- 104 Pa and is sealed with a massless piston. calculate the change in internal energy of the system
A child sitting 1.20 from the center of a merry-go-round moves with a speed of 1.65. Calculate the net horizontal force exerted on the child
A proton is projected in the positive x direction into a region of uniform electric field Earrowbold = (-5.40 multiplied by 105) i hat bold N/C at t = 0. Determine the acceleration of the proton
A certain kind of glass has an index of refraction of 1.650 for blue light of wavelength 440 nm and an index of 1.620 for red light of wavelength 690 nm. If abeam containing these two colors is incident at an angle of 30.0° on a piece of this glass, ..
in a certain thermal reactor fueled with partially enriched uranium 13 of the fission neutrons are absorbed in
A few decades ago, trucks had chains hanging down from ther back trailers that contacted the ground. This was extremely important in the case of gasoline trucks! Now trucks are made with conducting tires.
A bat emits a sound whose frequency is 70.9 kHz. The speed of sound in air at 20.0 oC is 343 m/s. However, the air temperature is 40.4 oC, find the wavelength of the sound
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