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