A cowboy fires a silver bullet of mass 5 g with a muzzle speed of 302 m/s into the pine wall of a saloon. What is the temperature change of the bullet? Assume that all the internal energy generated by the impact remains with the bullet. The specific heat of silver is 234 J/kg · ? C. Answer in units of ?C.
Name: ____________________ Section: ___________________ Introduction to Electrical Circuits In this experiment you will be asked to make observations, explain them, and record your multi-meter readings in the data table DATA TABLE: Resistance based on color bands:_________?; %uncertainty ______(from color band) DMM-Measured Resistance ___________ ? Measured Voltage (V) Measured Current (A) Calculated R = V/I 1.5V battery 3V battery 4.5 V battery Calculations and Graphing: For each of the three previous procedures calculate the resistance from the measured current and voltage: R = V/I. Remember that the units have to be volts, amperes, and ohms; i.e. if you recorded your current in mA, you must convert to A (divide by 1000) for the results to be in ohms. Use an xy scatter graph to graph voltage on the y-axis versus current on the x-axis. Use the linear fit trendline function of Excel® to add the slope of the line to the graph. What is the significance of the slope? How do the graph and the slope of the line relate to Ohm’s law? Can this series of experiments be considered a verification of Ohm’s law? Why or why not?
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vincents mountain bike has a spring with a constant of 64 N/m in the front-wheel suspension, and it compressed 0.17m when she hit a bump. how much energy does the front spring now store?
1- State how many significant figures are proper in the results of the following calculation: (15.1)(0.20 - 30.05 + 170.2) 2- Cos 126.39° 3- Soccer fields vary in size. A large soccer field is 90.3 m long and 83.1 m wide. What is its smallest dimension in inches? (Assume that 1 meter equals 3.281 feet.) 4- Solve: (1.6 x 102) / (3.5 x 103) 5- Solve: (4 x 10-1)2 6- Sin 109.65° 7- Mount Everest, at 29,028 feet, is the tallest mountain on the Earth. What is its height in kilometers? (Assume that 1 kilometer equals 3,281 feet.) 8- What is the exponent of the solution to this expression? 4-2.1 x 45.8 9- What is the height in meters of a person who is 7 ft, 6.7 in. tall? (Assume that 1 meter equals 39.37 in.) 10- State how many significant figures are proper in the results of the following calculation: (106.7)(98.2) / (46.210)(1.01) 11- Two legs of a triangle are 12.3 meters and 3.7 meters. The angle between them is 99.3 degrees. What is the length of the third side? 12- Tan 21.92° 13- Suppose that your bathroom scale reads your mass as 77.4 kg with a 0.5% uncertainty. What is the uncertainty in your mass (in kilograms)? 14- The speed of sound is measured to be 338.3 m/s on a certain day. What is this in km/h? 15- If the base of a certain ramp is 19.1 meters long, and its height is 4.9 meters, what is the angle in degrees of the incline? I need only the answer of those question. i need the answer as fast as u can
