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A paperweight, when weighed in air, has a weight of W =24.6 N. When completely immersed in water, but, it has a weight of Win water = 17.0 N. Discover the volume of the paperweight.
A scientist performing UN inspections finds evidence of an abandoned nuclear laboratory. A sample box in the lab reads "pure sample Strontium-90." How long ago was the sample created
q1. brass is an alloy made from copper and zinc. a .59 kg brass sample at 98 c is dropped into 2.8 kg of water at 5 c.
A convex mirror has a radius of curvature of 50.0 cm. A ruler (30.0 cm in length) is located 25.0 cm in front of the mirror and oriented at an angle of 90 degrees to the principal axis, as shown below. What are the a) location and b) height of the ..
A certain light source is found to emit radiation whose peakvalue has a frequency of 1.00E15 Hz. Find the temperature of the source assuming that is a blackbody radiator
q1. a rifle that shoots bullets at 420 ms is to be aimed at a target 49.0 m away. if the center of the target is level
an object with a mass of 4kg is on a table and 2m away from another object with mass 10kg. find the center of gravity of these objects
A physics professor demonstrates the Doppler effect by tying a 650 Hz sound generator to a 1.1 m long rope and whirling it around her head in a horizontal circle at 100 rpm.
Two loudspeakers are placed 3-m apart. They emit 498 Hz sounds, in phase. A microphone is placed 3.2m distant from a point midway between the two speakers, where an intensity highest is recorded.
In a popular amusement park ride, a rotating cylinder of radius R = 3.10 m is set in rotation at an angular speed of 4.20 rad/s, as in the figure shown below. The floor then drops away, leaving the riders suspended against the wall in a vertical posi..
when light of wavelength 380 nm falls on a cesium surfaceelectrons are emitted that have a maximum kinetic energy of
Two charges are placed on the x axis. One charge (q1 = +8.97mC (microC)) is at x1 = +3.40cm, Calculate the net electric field at x = 0cm
Years ago, a block of ice with a mass of about 19.0 kg was used daily in a home icebox. The temperature of the ice was 0.0°C when it was delivered. how much heat did a block of ice absorb
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