(a) How many ohms are there in a 7.85 megohm resistor? (b) Typical laboratory capacitors are found 5 picofarads. How many farads are they? (c) The
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- Show that, when SI units for 0 and 0 are entered, the units given by the right-hand side of the equation in the problem above are m/s.arrow_forwardA marathon runner completes a 42.188-km course in 2 h, 30 min, and 12s. There is an uncertainty of 25 m in the distance traveled and an uncertainty of 1 s in the elapsed time. (a) Calculate the percent uncertainty in the distance. (b) Calculate the percent uncertainty in the elapsed time. (C) What is the average speed in meters per second? (d) What is the uncertainty in the average speed?arrow_forwardAn electric circuit is described by the following equation: d’u du +k+o°u= au, dt di? where t is time in seconds, and w, k, and a are positive constant parameters. a) Assuming that u is the voltage in Volts, find the physical dimensions of the constants k, w, and a in the SI system using the rule of dimension homogeneity. b) Present this equation in the form of the energy balance equation. Find the total instantaneous energy of the circuit E and the dissipative function F.arrow_forward
- a) A typical small passenger electric vehicle has a range of 200 km on an electric charge of 33 kWh. Convert this number into J/km (Joules per kilometer traveled). b) A comparably sized gasoline powered vehicle to (a) is rated as 25 miles per gallon. Convert this number into J/km (Joules per kilometer traveled). c) If gasoline costs $10.00 per gallon, and electricity $0.30 per kWh what is the difference in the cost of fuel per kilometer travelled between the electric vehicle in (a) and the gasoline powered vehicle in (b)? d) Surveys of EV owners show that they charge at home 70% of the time. Let us assume that for the remaining 30% they charge at a 60 kW rated "fast-charge” station. If patterns of travel remain the same, but we swap all our gasoline vehicles for electric vehicles, what is the ratio between installation of fast charging stations to gasoline pumps retired. e) The Chicago Transit Authority has about 2700 buses that travel a total of 240,000 miles daily. A typical bus…arrow_forwardGive an educated guess for the requested values of in Volts expressed as integer numbers, i.e. no decimal place necessary.(Find all values) 1. Vout(0+) = 2. Vout(pi/40) = 3. Vout(pi/20) = 4. Vout(pi/15) = 5. Vout(pi/10) = 6. Vout(pi/5) = 7. Vout(infinite) =arrow_forwardif v is in meters per second, B in teslas, and L in meters, then the units of the right-hand side of the equation are joules per coulomb or volts (the correct SI units for E ).arrow_forward
- Help! Please use the given number as is in the problem, such as 6.0 x 10^12arrow_forwardNeed help with parts (d) and (e). Answers to (a), (b), and (c) are 40 m/s, -72 Ns, and 72 Ns, respectively.arrow_forwardThe speed of light is 2.998 × 108 m/s. One light-year is the distance that light travels in one year. One Astronomical Unit (AU) is 1.50 × 108 km. (a) How many meters are in 1.0 light-year? (b) How many meters are in 1.000 light-year? (c) How many AU are in 1.00 light-year? (d) What is the speed of light in AU/h?arrow_forward
- Although these quantities vary from one type of cell to another, a cell can be 1.9 um in diameter with a cell wall 60 nm thick.arrow_forwardA family Light bulb of loow, a fan of loow, uses an elechric heater of loo w, each for 8 hours daily. LF the cost of electricity is o-olo Riyd Per unit, what is the expenditure for the Gam ily Per day electricity? onarrow_forwardAn astronomical unit (AU) is equal to the average distance from Earth to the Sun, about 92.9 × 106 mi. A parsec (pc) is the distance at which a length of 1 AU would subtend an angle of exactly 1 second of arc (the figure). A light-year (ly) is the distance that light, traveling through a vacuum with a speed of 186000 mi/s, would cover in 1.0 year. Express the Earth–Sun distance in (a) parsecs and (b) light-years.arrow_forward
- University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
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