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A 7-cm diameter vertical water jet is injected upwards by a nozzle at a speed of 15 m/s. Determine the maximum weigth of a flat plate that can be supported by this water jet at a height of 2-m from the nozzle.
Occasionally, huge icebergs are found floating on the ocean's currents. Suppose one such iceberg is 134 km long, 39.4 km wide, and 187 m thick.
A worker pushes a 34 kg block 13m along a level floor at constant speed with a force directed 38° below the horizontal. If the coefficient of kinetic friction between block and floor was 0.19.
some types of glass have a range of indices of refraction of about 1.4 to 1.7. What is the range of the polarizing angle
Imagine that we drop a block of mass m from a height h above the comparatively lightweight plate supported by a vertical spring with relaxed length L and spring constant k. From what value of h would we have to drop the block to compress spring to..
A barrel contains a 0.100 m layerof oil floating on water that is 0.390m deep. The density of the oil is 600 kg/m3. What is the gauge pressure at the oil-water interface
The temperature of a black body can be estimated based on the wavelength of light that it is emitting, Find the surface temperature of a star
An air bubble rises from the bottom of well where the temperature is 25 degree C, to the surface where the temperature is 27 degree C. Find the percent increase in the volume of the bubble if the depth of the well is 5 m. Atmospheric pressure is 101...
A radioactive isotope has an activity of 9.32×104 Bq initially. After 3.55 hours the activity is 6.71×104 Bq. What is the half-life of the isotope?
If a proton and an electron are released when they are 7.00×10?10 apart (typical atomic distances), find the initial acceleration of each of them
Two projectiles are launched from a cliff of height H = 16m as shown in the diagram below. Projectile 1 is launched with velocity v1 = 12 m/s at an angle q1, where q1 = 35 degrees. Projectile 2 is launched with velocity v2 = 12 m/s at an angle q2..
A 55 kg person is riding in a hot air balloon and scale shows this person's weight too be 549N. the acceleration of gravity at the location of the balloon is known to be 9.79 m/s/s.
A reasonable estimate of the moment of inertia of an ice skater spinning with her arms at her sides can be made by modeling most of her body as a uniform cylinder. Estimate the skater's moment of inertia to two significant figures
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