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An iron anchor of density of 7870 kg/m^3 appears 200 N lighter in water then in air.
a) Determine the volume of the anchor?
b) Determine the weight of the anchor in air?
While waiting for your plane to take off, you suspend your keys from a thread and set the resulting pendulum oscillating. It completes precisely 88 cycles in 1 minute. You repeat the experiment as the plane accelerates down the runway, and now find t..
A carpet is to be installed in a room of length 8.74 m and width 5.8 m. Find the area of the room retaining the proper number of significant figures
A solid uniform marble and a block of ice, each with the same mass, start from rest at the same height above the bottom of a hill and move down it. Find the speed of each of these objects when it reaches the bottom of the hill
A Carnot engine with a hot-reservoir temperature of 360 has the same thermal efficiency. What is the cold-reservoir temperature in C?
A Young's double-slit interference experiment gives bright fringes separated by 30.5 cm on a screen when the experiment is performed in air. What is the new spacing between bright fringes
A 11.8-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 10.8 m/s, find the translational kinetic energy of its center of gravity
A particle of charge +14 µC and mass 3.54 10-5 kg is released from rest in a region where there is a constant electric field of +490 N/C
The tune-up specifications of a car call for the spark plugs to be tightened to a torque of 38Nm . You plan to tighten the plugs by pulling on the end of a 30-cm-long wrench. With what force must you pull
Two small identical conducting spheres are placed with their centers 25 cm apart. One is given a charge of 20.0 nC and the other given a charge of -36.0 nC. What is the electrical force of each sphere on the other?
The only force acting on a 10.0 kg canister that is moving in an xy plane has a magnitude of 5.0 N. How much work is done on the canister by the 5.0 N force during this time
A diffraction grating produces a first-order bright fringethat is 0.0824 m away from the centralbright fringe on a flat screen. evaluate the wavelength of the light shining on the grating
In an experiment designed to measure the speed of light, a laser isaimed at a mirror that is 59.0 km due north. A detector is placed122 m due east of the laser. The mirror is to be aligned so thatlight from the laser refelects into the detector.
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