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A block of mass 6 kg, which has an initial speed of 3 m/s at time t = 0, slides on a horizontal surface. Find the magnitude of the work that must be done on the block to bring it to rest. Answer in units of J. Also if a constant friction force of magnitude 12 N is exerted on the block by the surface, find the magnitude of the acceleration of the block. Answer in units of m/s^2.
What is the horizontal component of velocity
what is the translational rms speed of carbon dioxide molecules.
A dockworker applies a constant horizontal force of 79.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 15m in a time 4.50s. What is the mass.
In the Bohr theory of the hydrogen atom, an electron moves with constant speed in a circular orbit about a proton, where the radius of the orbit is 0.53 x 10-10 m, Determine the electrostatic force exerted by the proton on the electron
A device used in radiation therapy for cancer contains 6.30×10-1 g of cobalt 2760Co (59.9333819 u). Determine the activity of the radioactive material
When light of wavelength 350 nm falls on a potassium surface, electrons having a maximum kinetic energy of 1.31 eV are emitted. determine the work function of potassium
A person walks 25.0 degrees north of east for 3.1 km. How far would another person walk due north and due east to arrive at the same location.
A 45cm3 block of iron is removed from an 800?Cfurnace and immediately dropped into 200 mL of 20?C water. What fraction of the water boils away
A spring has a spring constant = 40 N/m. It is compressed by a distance 10 cm. The mass of the cart is 300 grams. The angle of incline of the track is 20º.
A gas containing 9 moles is compressed adiabatically from an initial temperature of 288 K to a final temperature of 463 K, what is the work done by the piston
According to the Guinness Book of World Records (1990 edition, p. 169), the highest rotary speed ever attained was 2010 m/s (4500 mph). The rotating rod was 15 cm (5.9 in) long. Imagine the speed quoted is that of the end of the rod.
A Single Turn, Square Loop A 0.408 m length of wire is formed into a single-turn, square loop in which there is a current of 14.3 A. What is the maximum torque that the loop can experience
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