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A sample of gold of volume 2.00*10^-5 m^3 is available to make a wire. If the length of the wire is to be 50.0 cm and all the gold is used, what will be resistance of the wire? (Gold has a resistivity of 2.44*10^-8Ωm and a temperature coefficient of 3.4*10^-3('C)^-1.)
A particle has initial velocity 5 m/s due east and acceleration 2 m/s^2 due west. Find the distance traveled during 3rd second of the motion.
The average speed of the atoms in a 1.6 g sample of helium gas is 651 m/s. Estimate the thermal energy of the sample
A 2.10kg snowball is fired from a cliff 8.55 m high with an initial velocity of 11.90 m/s, directed 47.0° above the horizontal. (a) Using energy techniques, find speed of the snowball as it reaches the ground below the cliff. What is that speed (b) i..
An open plastic soda bottle with an opening diameter of 3.0 cm is placed on a table. A uniform 1.95-T magnetic field directed upward and oriented 29º from vertical encompasses the bottle. What is the total magnetic flux through the plastic of the ..
The total impedance of an RC circuit with a resistance of 200 ? is 1060 ?. If the frequency of the applied voltage is 20.0 Hz, what is the value of the capacitance in this circuit
A star of radius 1 × 10^6 km rotates about its axis with a period of 48 days. Estimate the period of the neutron star
Five charges are placed in a closed box. Each charge (except the first) has a magnitude which is twice that of the previous one placed in the box. find the magnitude of the smallest charge in the box
When an object is moving with uniform circular motion, which of the following statements is correct for the tangential velocity? It acts towards the center, It acts away from the center, It is perpendicular to the plane of the circle, or It is per..
In Fig. 15-53, three 18000 kg ore cars are held at rest on amine railway using a cable that is parallel to the rails, which areinclined at angle θ = 34°. The cable stretches 21 cm justbefore the coupling between the two lower cars breaks, detachin..
Two slits separated by a distance of d = 0.11mm are located at a distance of D = 660mm from a screen. The screen is oriented parallel to the plane of the slits. The slits are illuminated by a coherent light source with a wavelength of lambda = 536..
Which of these statements is true about circuit components connected in parallel? The potential drop across each component will be the same. Both the current passing through and the potential drop across each component are different. The same amou..
A 1000kg car is moving at a constant speed of 7 m/s when it hits the back bumper of another car with 1200kg of mass moving in the same direction at a constant speed of 6m/s
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