3The deasty Of the Unverse b. lo kg/na touw fiad in a ms of avecage is...
Calculate the mass, in kg, of each sample. Part A. 3.44x10^26 cadmium atoms Part B. 6.14x10^27 nickel atoms Part C. 9.03x10^27 manganese atoms Part D. 1.54x10^29 lithium atoms
What is the mass of a 68-kg astronaut (a) on Earth, g 9.8 ms-2 (b) on the Moon, g-1.7 ms2 (d) in outer space traveling with constant velocity? What is the weight of a 68-kg astronaut (e) on Earth, g -9.8ms (f) on the Moon, g =1.7"w" (g) on Mars. g 3.7 ms? (h) in outer space traveling with constant velocity?
A force in the negative direction (on the x axis) is applied for 27 ms at 0.40 kg ball initially moving at a speed of 14 m / s in the positive direction of x. The force varies in magnitude and the momentum has a magnitude of 32.4 N.s. What is a) speed b) the direction of the ball after the force is applied? c) What is the magnitude of the average force applied to the ball?
3. The Earth has a mass of 5.98 x 1024 kg. Theaverage mass of the atoms that make up the Earth is 40 u. Howmany atoms are in the Earth? Show all work! ( u = atomic mass unit = 1.661 x10-27 kg )
A particle P of mass m kg is attached to two fixed points A and B by two identical model springs, each of stiffness k and natural length lo- The point A is at a height 1/o above the point B. The particle is free to oscillate vertically under gravity. The stiffness of each spring is given by k = 4mg/10. The horizontal level passing through the fixed point A is taken as the datum for the gravitational potential energy....
A small block (S) of mass ms = 30 kg sits on a fixed ramp of angle e = 30 deg, height h = 4 m, and coefficients of friction static js = 0.6 and dynamic ua = 0.3. Block S is connected to the base of the ramp by a linear spring of constant k = 700 N/m and on the other side to a large block (B) of mass mg = 100 kg hanging over a pulley. The...
3.28 Sodium chloride has a density of 2165 kg m-3. The unit cell, which is cubic, with a cell edge of 0.563 nm, contains four Na and four Cl atoms. Calculate the number of atoms of Na per cubic metre using: (a) density: (b) unit cell data.
In the article “Sweetening Statistics - What M&Ms Can Teach Us,” M. Paret and E. Martz discussed several statistical analysis that they performed on bags of M&Ms. The authors took a random sample of 200 small bags of peanut M&Ms and calculated the sample mean weight and sample standard deviation of 52.04 g and 2.81 g, respectively. (a) Determine the 95% confidence interval for the mean weight of all small bags of peanut M&Ms. (b) According to the manufacturer, the...
Graph the intrinsic electron concentration as a function of bandgap. For this calculation make the approximation that m, mp-mo for all the semiconductors. Assume Eg ranges from 0.1eV to 6eV. Comment on the values of ni compared to the concentration of atoms in the crystals. (Assume the density of atoms is the same as what you calculated above for Si). Take the temperature to be 27°C. 3)