Physics Heat & Thermodynamics Level: University
GasThe average density of the material in intergalactic space is approx. 2.5 x 10 - 27 kg/m3. What is the volume of gold sample p = 19300 kg/m3 that has the same mass as 8.0 x 1024 m3 of intergalactic space?
Physics Heat & Thermodynamics Level: University
GasAt standard temperature and pressure carbon dioxide has a density of 1.98 kg/m3. What volume does 0.85 kg of carbon dioxide occupy at standard temperature and pressure?
Physics Work,Power & Energy Level: University
Potential energyA spring is required a force of 1 N to compress it 0.1m. How much work is required to stretch it to 0.4m?
Physics Force & Laws Of Motion Level: University
Spring ForceA favorite piece of exercise equipment consists of various springs. In one exercise a person pulls a handle grip attached to the free end of a spring to 0.80m from the unstrained position. The other end of the spring ( spring constant is 53 N/m) is held in place by the equipment frame. What is the magnitude of the force that is applied to the handle grip?
Physics Properties Of Matter Level: University
SolidA bar 2.0 long is suspended horizontally from its ends by steel wires 1.0 long. The wires have radii of 1.0 mm. A mass of 20 kg is then attached 40 cm from one end of the bar. What is the difference in length between the two wires?
Physics Properties Of Matter Level: University
SolidA certain material has a density of (rho) and a tensile strenght of U. How long a rod of this material can be suspended from one end without breaking under its own weight? What is this length in the case of aluminum?
Physics Electrostatics Level: University
Electric fieldSketch the electric field lines for the system of charges shown in 19-32
Physics Electrostatics Level: University
Figure 19 - 32 shows a system consisting of three charges q1 = +5.oo uC q2 = +5.00 uC and q3 = + 5.00 uC at the verticces of an equilateral traingle of side d=2.75 cm. (a) Find the magnitude of the electric field at a point halfway between the charges q1 and q2. (b) Is the magnitude of the electric field halfway between the charges q2 and q3 greater than less than or the same as the electric field found in fart (a) explain. (c) Find the magnitude of the elctric field at the point specified in part(b).
Physics Electrostatics Level: University
Principle of super positionThe point charges in 19-32 have the following values q1 = 2.1uC q2 = + 6.3 uC q3 = -89 uC. (a) Given that the distance d in figure 19 - 32 is 4.35 cm, Find the direction and magnitude of the net electrostatic force exerted on the point charge q1. (b) How would your answer to part (a) change of the distance d were doubled explain
Physics Electrostatics Level: University
Two pont charges lie on the x axis.A charge of + 9.9 uC is at the origin and a charge of -5.1 uC is at x = 10.0cm (a) At what position x would a third charge q3 be in equilibrium. (b) Does your answer to part (a) Depened on whether q3 is positive or negative, Explain.
Physics Electrostatics Level: University
ChargeWhen adhesive tape is pulled from a dispenser the detached tape acquires a positive charge and the reaming tape in the dispenser acquires a negative charge. If the tape pulled from the dispenser has.14uC of charge per centimeter what length of tape must be be pulled to transfer 1.8 x 10 to the 13th pwr electrons to the reaming tape
Physics Force & Laws Of Motion Level: University
Connected MotionA box of ant aunts ( total mass m1 = 1.11 kg) and a box of ant uncles ( total mass m2 = 3.33 kg) slide down an inclined plane while attached by a massless rod parallel to the plane ( the box of ant aunts is higher up on the plane than the box of ant uncles). The angle of incline is = 34 degree. The coefficient of kinetic friction between the aunt box and the incline is m1 = 0.227 that between the uncle box and the incline is m2 = 0.193. Compute (a) The tension in the rod and (b) The common acceleration of the two boxes.
Physics Current Electricity Level: University
PowerA person bumps into a set of batteries with an emf of 100.0 V that can supply a maximum power of 5.0W. If the man's resistance between the points where he contacts the batteries is 1.0 k Ohm how much current passes through him?
Physics Alternating Current Level: University
Transient currentA 20-micro F capacitor is discharged through a 5 -K Ohm resistor. The initial charge on the capacitor is 200 micro C. Sketch a graph of the current through the resistor as a function of time. Label both axes with numbers and units. What is the initial power dissipated in the resistor? What is the total energy dissipated?
Physics Current Electricity Level: University
MeasurementA galvanometer is to be turned into a voltmeter that deflects full scale for a potential difference of 100.0V. What size resistor should be places in series with the galvanometer if it has an internal resistance of 75 Ohm and deflects full scale for a current of 2.0 mA?
