Physics Force and work in Electrical, Rotational, Thermal, and Electrical Systems. sarahmarion published on January 27, 20162 responses 0 5.0★ / 5 Questions in vertical order Heat can be expressed in amps or volts calories or joules calcious or fahrenheit coulombs are the variable for Type answer (6 letters) The heat required to melt a substance latent sensible calories AC vs DC current changes direction periodically; current in 1 direction current in 1 direction; current changes direction periodically Newton's first law? Law of inertia Law of acceleration law of interaction What do you use to measure weight? What do you use to measure mass? balance; scale manometer; scale scale; balance In a real machine work out = work in work out > work in work in > work out In q=mcat, what does q stand for? heat energy specific heat specific gravity What is the force like quantity in an electrical system? pressure voltage force Work is expressed in Type answer (24 letters) resistance is given in Type answer (4 letters) What is the force like quantity in a rotational mechanical system? force pressure torque 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 fraction of Earth weight on moon 1/10 1/6 1/4 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 the advantage to using a pulley is that it allows you to do less work shortens the distance reverses direction To measure voltage, you use a barometer a multimeter an ammeter T= Force x distance Mass x acceleration Force x mass An ideal machine has a bad effiency no friction lots of pressure psi is also Type answer (22 letters) Newton's third law is the law of inertia. the law of acceleration. the law of interaction. Distance = F/a v/m m/v The upwards force exerted on a floating object by a fluid Type answer (8 letters) Which is the bigger degree? 1 degree fahrenheit 1 degree celcius Efficiency is Work/mass F x d work out/ work in 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 How do you measure the density of a liquid? manometer ammeter hydrometer what's the equation for sensible heat? q=mc delta t q= m x Hv q=m x Hf AC's voltage source is from a voltmeter a battery a generator 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 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 What is the force-like quantity in a mechanical system? force pressure temperature difference What is the force like quantity in a thermal system? force voltage temperature difference What's the conversion for celcius to fahrenheit? Type answer (9 letters) Heat moves from hot air to cold air warm temperature to cold tempature high temperature to low temperature You use a voltmeter to measure potential difference measure current measure pressure Specific gravity has a unit True False Characteristics of weight are Select the three correct answers lb, N slug how hard gravity pulls on a mass can change cannot change pressure= F/A N/m m x a Batteries are AC DC Nice The weight density of water is 14.7 psi 61 lb/ft3 62.4 lb/ft3 P (atmosphere) + P (gage) = Type answer (21 letters) 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) 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 What units is torque given in? kg N x m m/s2 work = F x d F x mass F x A sensible heat (on the table) is horizontal diagonal vertical current is given in Type answer (7 letters) What is the force like quantity in a fluid system? force pressure voltage