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The figure shows a graph of the power dissipated in a resistor as a function of the resistance. What quantity does the slope of this graph represent?
The square of the current in the resistor
The potential difference across the resistor
The current in the resistor
The reciprocal of the current in the resistor
The resistivity of the resistor
When an automobile moves by constant speed down a highway, most of the power developed by the engine is utilized to compensate for the mechanical energy loss due to frictional forces exerted on the car with the air and the road.
a 2.40 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 14.9 ms.
The maximum speed of a 4 kg mass attached to a spring is 0.68 m/s, and the maximum force exerted on the mass is 12 N. What is the frequency of this system
A light pipe consists of a central strand of material surrounded by an outer coating. find what is the index of refraction of the coating
Two events occur in an inertial system at the same time, but 7200 km apart. What is the time difference between the two events
A baseball (mass 0.14 kg, radius 3.7 cm) is spinning with an angular velocity of 55 rad/s. what is the ratio of its rotational and translational kinetic energies
A gibbon is hanging onto a horizontal tree branch with one arm, swings with a small amplitude. Estimate the frequency of oscillation
In preparation for this problem, review Conceptual Example 7. A space traveler whose mass is 115 kg leaves earth. What are his mass in interplanetary space where there are no nearby planetary objects
03.3 A boat is heading upstream when a float is dropped overboard and carried downstream. What is the boat's speed in still water?
A moderate wind accelerates a pebble over a horizontal xy plane with a constant acceleration = (5.80 m/s2) + (7.00 m/s2). At time t = 0, the velocity is (3.6 m/s). What are magnitude and angle of its velocity when it has been displaced by 12.6 m para..
A gas with ?=75 is at 285K when it's compressed isothermally to one-third of its original volume and then further compressed adiabatically to one-fifth of its original volume
Excited states do not in general live very long before they decay.Suppose a certain excited state lives just 10^-7 s. In that case weknow the time when the atom is in the excited state quiteaccurately--to within ?t=10^-7 s. That means there is a ..
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