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You have determine that it takes 3s for a toy car ti travel through the distance of 162 cm. Calculate the average speed of the toy car
two identical charged objectsare hanging from 26.8 cm threads from the same point on the cieling. what is the charge on each object
A steel piano wire 1.35 m long has a cross- sectional area of 0.00751 cm2. When under a tension of 68.9 N, how much does it stretch
A gasoline engine absorbs 1900 J of heat and performs 530.0 J of mechanical work in each cycle. What is the efficiency of the engine
The molar mass oxygen gas is 32.0 x 10^-3 kg/mol. If the gas is at 21 degrees C, find the root-mean-square speed for an oxygen molecule
If 5.6 moles of an ideal gas expandes isothermally at 105 degrees C to 6.1 times its initial volume, then find the heat flow into the system
In a certain experiment, the pressure of a gas depends on the volume by P=aV^2+b, where a=5.0 atm/m and b = 8.5 atm. What is the work done on the gas
a rock is sliding alone a horizontal surface with a veolcity of 8.5 ms . it eventually stops due to friction. what is the power produced by the fricition
After a completely inelastic collision, two objects of the same mass and same initial speed are found to move away together at 1/2 their initial speed
a 13-g sample of an unkown metal is heated to 96.0 degrees C. What is the specific heat of the unknown metal
A football coach in hopes of improving his kicker's performance fills a .9 kg football with helium rather than air. what change in relative weight of the football (change in weight divided by weight)
If 3.9 moles of an ideal gas is at a temperature of 69 degrees C, find the pressure on the walls of the container due to gas
If a material increases its length from 130 m to 132.60 m when its temperature is rasied 155 degrees C, what is its coefficient of linear expansion
The Ed-Scale defines the perfect temperature of a martini to be 8.0 degrees E and boling point of antifreese to bee 100 degrees E. Use this equation to find the freezing point of water in Eds
A steel ball bearing 7.00mm in diameter is dropped into a cylinder of glycerin. What is the terminal velocity of the ball bearing
Mercury flows through a horizontal pip 1.25 cm in diameter and 1.2 m long. what is the rate of flow through the tube
water is flowing in a horizontal pipe of variable cross section. Where the cross-sectional area is 1.80x10^-2 m^2, What is the PRESSURE and VELOCITY
A rugby player passes the all 7.00m across the field, where it is caught at the same height as it left his hand. How long did this pass take
1850 kg car is set in mottion on a level road by a spring constant k=2.40x10^6 N/m that has been compressed 1.50m. what is the intial mechanical energy of the system
A 2.68 mol sample of an ideal monatomic gas undergoes the reversible process shown in the figure. calculate How much work is done by the gas
IO is a moon of jupiter, with a mass M= 8.9X10^22 kg, and radius of 1820Km. What period will this satellite have
a motor applies a constant tension of 2.5 kN to a cable passing over a pulley, find the work done by gravitaional force action on the crate
1400 kg car acelerates from 45mph (20.1 m/s) to 65mph (29.1m/s) over a distance of 440 m in 35 s. what is the network done on the car by all forces acting on it
the top of the pool table is 0.710m from the floor. the placement of the tape is such at 0m aligns to the edge of the table. at what speed did his pool ball hit the ground
A standing wave is in a open end tube. The tube length is 1.80m, determine the fundamental frequency