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Two blocks of copper, one with a mass of 1 kilogram and the other with a mass of 3 kilogram are at the same temperature. Find which block has more thermal energy? If the blocks are located in thermal contact, will the thermal energy of the blocks change?
Vector A is 5.5 cm long and points along the x axis. Vector B is 7.5 cm long and points at +30° above the negative x axis. Determine the sum of these two vectors in terms of magnitude and direction
A 50 kg person climbing a rope slides down after reaching the top. find The frictional force acting upward on the person
A beam of 2-MeV neutrons is incident on a slab of heavy water (D2O). The total cross-sections of deuterium and oxygen are 2.6b and 1.6b respectively.what is the macroscopic total cross section of D2O at 2 MeV?
a rail gun accelerates a projectile from rest by using the magnetic force on a current-carrying wire. the wire has
A tarantula is sitting 4.5 m in front of the concave spherical mirror by radius of R=1.4m. Construct a ray diagram to scale showing the object, image and the mirror. Decide graphically the characteristics of the image.
A converging lens and a diverging lens, separated by a distance of 30.0 cm, are used in combination. What is the focal length of the diverging lens
You're using a rope to pull a sled at constant velocity across level snow,with coefficient of kinetic friction 0.050 between sled and the snow. The sled is loaded with physics books, giving a total mass of 21 kg.
A cosmic-ray proton in interstellar space has an energy of 17.0 MeV and executes a circular orbit having a radius equal to that of Earth's orbit around the Sun, What is the magnetic field in that region of space
Three identical stars of mass M = 1.9 x1030 kg form an equilateral triangle that rotates around the triangle's center as the stars move in a common circle about that center. The triangle has edge length L = 7.1 x1010 m. What is the speed of the st..
A roller coaster descends 35 meters in its initial drop and then rises 23 meters before going over the first hill. If a passenger at the top of the hill feels an apparent weight which is one-half of her normal weight, what is the radius of curvature ..
Two point charges Q1 = 3.6 µC and Q2 = 8.0 µC are initially very far apart. They are then brought together, How much work does it take to bring them together
a 5.00 kg object is released from rest while fully submerged in a liquid. the liquid displaced by the submerged object
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