Physics Work,Power & Energy Level: Misc Level
Car going down hill. potential energy becomes?Heat or net energy does not change?
If a car goes downhill its potential energy (energy due to position) is converted to kinetic energy (energy due to motion)
Physics Properties Of Matter Level: Misc Level
2 cubes of different mass and same density placed in water, what happens to displacement?
Physics Force & Laws Of Motion Level: Misc Level
2 balls of equal mass hits 5 balls of equal mass. what direction are the balls dispersed?
Physics Rotational Mechanics Level: Misc Level
a uniform rod with length and mass is suspended by two thin strings as show in the figure inthe attachment .the rod in horizontal position. whic of the equations represents the initial angualr acceleration alpha of the rod when the string on the left of cut (hint: use parallel axis theorem)
a) (3mg)/(2I) b) (3mI)/(2g) c) (3I)/(2g) d) (3g)/I e) I/(2g) f)(3g)/ (2I) g) g/I h) (121)/mg
Physics Rotational Mechanics Level: Misc Level
a figure skater is spinning with her arms and one leg extended as far she can. she then pulls them in tight to her body .sa her position contracts, her angular velocity----
a)decreases b)increases c) remains the same
Physics Rotational Mechanics Level: Misc Level
a figure skater is spinning with her arms and one leg extended as far she can. she then pulls them in tight to her body .sa her position contracts, her rotaional kinetic energy--
a)decreases b) increase c)remains the same
Physics Rotational Mechanics Level: Misc Level
a figure skater is spinning with her arms and one leg extended as far she can. she then pulls them in tight to her body .sa her position contracts, her moment of inertia--
a)decreases b) increases c) remains the same
Physics Rotational Mechanics Level: Misc Level
a figure skater is spinning with her arms and one leg extended as far she can. she then pulls them in tight to her body .sa her position contracts, her angular momentum--
a) decreses b) increases c) remains the same--
Physics Heat & Thermodynamics Level: Misc Level
0.16 kg of water at 85 celcius is pured into an insulated cup containing 0.206 kg of ice initally at 0 degrees. calculate the mass of liquid when the system reaches thermal equallibrium. (in kg)
a)2.93 all to power of-1 b) 3.31 c) 3.74 d)4.23 e)4.78 f)5.40 g)6.10 h)6.89
Physics Heat & Thermodynamics Level: Misc Level
a hot 800 kelvin and a cold 200 kelvin object are connected by two aluminum bars as shown in the attaached file. considering the left configuration only, lowering the temperature of the 800 kelvin block to 400 kelvin will reduce the rate of heat transfer of --
a)1/4 b)1/2 c)1/3
Physics Properties Of Matter Level: Misc Level
the pressure inside a gas bottle at 23.5 celcius is 3540 kPa. what will be pressure inside the bottle if 36% of the gas is released while the temperature drops to 8.8 celcius. (in kPa)
a)1.69 all answer power of 3 b) 1.91 c) 2.15 d) 2.43 e)2.75 f) 3.11 g) 3.51 h) 3.97
Physics Properties Of Matter Level: Misc Level
a piece of moon rock reads 43.6 grams on a scale when in air, but 20, 4 grams in a fluid having a specific gravity of 0.86. what is the density of the moon rock in kg/m^3?
a)4.24*10^2 b)5.30 power of 2 c)6.62 power of 2 d)8.27 power of 2 e)1.03 power of 3 f) 1.29 power of 3 g) 1.26 power of 3 h)2.02 power of 3
Physics Properties Of Matter Level: Misc Level
the pressure at A is --the pressure at B
a) equal to b) greater than c) less than * the pictture is a bottle facing right with B being the skinny neck and A being the wide end end at the base*
Physics Properties Of Matter Level: Misc Level
the amount of fluid that passes through A in one second is ---the amount of fluid that passes B an one second.
a) equal to b)greater than c)less than
Physics Properties Of Matter Level: Misc Level
An incompressable fluid moves through the pipe shown above from right toleft. the pipde widens from the diameter of 3 cm at B to the diameter of 5 cm at A (Assume non viscous laminar flow.-the speed of the fluid at A is ---the speed of the fluid at B.
a) equal too b) greater than c) lessthan
