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If the length and diameter are measured at four different locations by means of a micrometer with an uncertainty of 0.5% of reading, determine the uncertainty in the measurement.
Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 8.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol.
The light is a 12 W bulb. How much energy if any will be stored in the battery in the morning? Assume that the battery was fully charged before the lights were left on.
Make a sketch of BCC crystal structure Draw the stress in the appropriate direction Draw the densest plane and direction that will be activated by the stress Calculate the yield stress that wi
If the x component of acceleration is ax=(1/4)t^2 m/s^2, where t is in seconds, determine the magnitude of the rocket's velocity and acceleration when t=10s.
Discuss whether the following situations should be modeled as closed systems or open systems. Clearly define the system and its boundaries.
The collars are pin connected at B and are free to move along rod OA and the curved guide OC having the shape of a cardioid, r = [0.2(1+cosX)]m.
Estimate the vertical distance she has climbed if the average air density is taken to be 0.074 lbm/ft3. Neglect the effect of altitude on local gravity.
The vertical motion of mass A is defined by the relation x=10sin(2t)+15cos(2t)+100. Determine (a) the position, velocity, and acceleration of A when t=1.
Draw the bar graph of probability vs outcome ( I can do this one I think) d) given that the sum is 10, what is the probability that the first rolled yielded a 4?
Also calculate specific steam consumption, BWR, quality of steam exist each turbine, and the amount of heat rejected in condenser.
Alson in moving from point A in a particular circuit to point C, an electron experiences no change in potention energy. What is the value of Vca?
A particle at rest is located at point (3,2,5) with units of ft. It is subjected to an acceleration in units of ft/s^2 of a = {6t i + 12t^2 k}. What is the particle's position at t=1 s?
The position of a crate sliding down a ramp is given by x = 0.25t^3, y=1.5t^2, z=6-0.75t^2.5, all in units of m where t is in units of s. Determine the magnitudes of the crate's velocity and acc
It uses 1 kW of power. Will the circuit breaker trip? b) Your roommate plugs in a 1 kW hair dryer while you also are using your hair dryer. Will the circuit breaker trip?
Using the components system shown provide an expression for the velocity and ACCELERATION of the airplane when x =350m. Express the velocity in m/s and acceleration in m/s^2.
A vehicle starts from rest then moves rectilinear with a velocity of v = 2t^2 for 5 s until it reaches a velocity of 50 ft/s. Construct the v-t, s-t and a-t graphs for this system.
The magnitude and direction of the smallest force in portion BC of the band for which the resultant R of the 2 forces exerted on the hand at A is directed along a line joining points A & H?
Knowing that the ball takes 3 seconds to hit the bottom of the lake, find the depth of the lake and the speed of the ball when it hits the bottom.
The experiment is repeated with a metallic sphere of the same diameter, but unknown composition with a mass of 1.263 kg. If the same observed temperature change occurs in 4.59 s, what is the spec
If the probe surface has an emissivity of 0.8 and it does not receive radiation from other surfaces, such as the sun, what is its surface temperature of the probe?
The heater surface is exposed to air that is also at 20°C but for which h = 50 W/m^2K. What is the corresponding surface temperature of the cylinder?
The inner and outer surface temperatures of a glass window 5 mm thick are 15°C and 5°C. What is the heat loss through the a 1m X 3m window if the thermal conductive of the glass is 1.4 W
If it takes 45s to make the turn, determine the magnitute of the boat's acceleration during the turn. (A to B is half a circle or 180 degrees)
What is the corresponding change in heat flux through the roof when the heat transfer coefficient changes from 5 to 30 W/m2 K?