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Question: A force F = 10i + 9j + 12k acts on a body mass of 100 grams. If the displacement of the object is d = 5i + 4j, where d is given in meters, find the work force and the angle between the force and distance.
submarine on the ocean surface receives a sonar echo indicating an underwater object. What is the object's depth
In a particular beta-minus decay of a free neutron (that is, one not part of an atomic nucleus), the emitted electron has exactly the same kinetic energy as the emitted electron antineutrino. What is the value, in MeV, of that kinetic energy? Assume ..
It is desired to cool iron parts from 500°F to 100°F by dropping them into water that is initially at 55°F. how many kilograms of water are needed per kilogram of iron
A 2.9 kg block is released from rest on a 45° inclined ramp. The block will lose energy to friction at a constant rate of 4 J/m as it slides down the ramp
Find the critical angle for an optical fiber whose core has n value of 1.50 and whose cladding has n value of 1.15
What is the speed of the two carts at the moment while their speeds are equal?
An elevator cable winds on a drum of radius 80.0 cm that is connected to a motor. If the elevator moves down8.0m, how many revolutions has the drum made
An electron (q = -1.6E-19 C, m = 9.1E-31 kg) has an initialvelocity (t=0) of v = 1.6E5 m/s j + 2.4E5 m/s k and is moving in a magneticfield B = 0.5 T k. What is the radius of motion of the electron
Find the speed of sound in a thin rod of cast iron, which has a sheer modulus of 4.5 1010 Pa and a density of 7.30 103 kg/m3
A block of mass M hangs from a spring having spring constant k = 12 N/m and oscillates up and down with simple harmonic motion. What is the maximum speed of the block
A golfer tees off from the top of a rise, giving the golf ball an initial velocity of 43 m/s at an angle of 30o above the horizontal. How high is the rise above the fairway
Two narrow slits are used to produce a double slit diffraction pattern with monochromatic light (lambda=450 nm) onto a screen that is 9.5 m away. If the distance between two adjacent dark fringes near the center of the pattern is 1.5 cm, what is the ..
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