Physics Force and work in Electrical, Rotational, Thermal, and Electrical Systems. sarahmarion published on January 27, 20163 responses 0 5.0★ / 5 Questions in vertical order the advantage to using a pulley is that it allows you to do less work shortens the distance reverses direction If the compressor in a hydraulic lift exerts 30 psi of air on the hydraulic fluid, and the radius of the piston is 6 inches, the force is.... 3393lb 4456lb 20lbs To measure voltage, you use a barometer a multimeter an ammeter Batteries are AC DC Nice What is the force like quantity in a thermal system? force voltage temperature difference psi is also Type answer (22 letters) Distance = F/a v/m m/v If the wind is pushing north at 20 mi/hr, and a bird is flying south at 15 mi/hr, what is the resultant of combining the two vectors? 35 5 0 You use a voltmeter to measure potential difference measure current measure pressure What do you use to measure weight? What do you use to measure mass? balance; scale manometer; scale scale; balance AC's voltage source is from a voltmeter a battery a generator Check the advantages to a simple machine Select the three correct answers allows you to do less work reverses direction shorter distance make work easier Archimedes Principle says: every action has a equal and opposite reaction the upwards force on the object is equal to the weight of the fluid displaced the ratio of the density of a substance is to the density of water Work is expressed in Type answer (24 letters) What is the force like quantity in a fluid system? force pressure voltage work = F x d F x mass F x A The weight density of water is 14.7 psi 61 lb/ft3 62.4 lb/ft3 sensible heat (on the table) is horizontal diagonal vertical An ideal machine has a bad effiency no friction lots of pressure P (atmosphere) + P (gage) = Type answer (21 letters) AC vs DC current changes direction periodically; current in 1 direction current in 1 direction; current changes direction periodically In a real machine work out = work in work out > work in work in > work out pressure= F/A N/m m x a Characteristics of weight are Select the three correct answers lb, N slug how hard gravity pulls on a mass can change cannot change The principle that states that a change in pressure at any point in a confined fluid is transmitted undiminished throughout a fluid Type answer (18 letters) Efficiency is Work/mass F x d work out/ work in Newton's third law is the law of inertia. the law of acceleration. the law of interaction. what's the equation for sensible heat? q=mc delta t q= m x Hv q=m x Hf In q=mcat, what does q stand for? heat energy specific heat specific gravity Specific gravity has a unit True False What's the conversion for celcius to fahrenheit? Type answer (9 letters) What is the force like quantity in a rotational mechanical system? force pressure torque What is the force-like quantity in a mechanical system? force pressure temperature difference resistance is given in Type answer (4 letters) Heat can be expressed in amps or volts calories or joules calcious or fahrenheit Newton's first law? Law of inertia Law of acceleration law of interaction Heat moves from hot air to cold air warm temperature to cold tempature high temperature to low temperature Which is the bigger degree? 1 degree fahrenheit 1 degree celcius The heat required to melt a substance latent sensible calories current is given in Type answer (7 letters) coulombs are the variable for Type answer (6 letters) T= Force x distance Mass x acceleration Force x mass thermal energy is measure of the average of each particle in the substance sum total of the energy of all the particles within the substance fraction of Earth weight on moon 1/10 1/6 1/4 How do you measure the density of a liquid? manometer ammeter hydrometer What is specific heat? when an object is immersed in a fluid, the upwards force on the object is equal to the weight of the fluid displaced amount of heat required to change the temperature of one gram of a substance by 1 degree the ratio of the density of a substance to the density of water What units is torque given in? kg N x m m/s2 What is the force like quantity in an electrical system? pressure voltage force The upwards force exerted on a floating object by a fluid Type answer (8 letters)