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Household wiring made of aluminum wire with cross-section area 3.1 x 10^-6 m^2 carries a current of 4.5 A. The bulk resistivity of aluminum is 2.82 x 10^-8 ?m. what is the power loss over 5.2 m of wire?
an object can be hung from a string with a linear mass density of 0.00200 kg/m that passes over a light pulley. What is the frequency of the vibrator
A person can jump a horizontal distance of 2.80m on Earth. How far could the person jump on the moon, where the free-fall acceleration is g/6 and g=9.81 m/s2?
A bomb is designed to explode 2.00 s after it is armed. The bomb is launched from earth and accelerated to an unknown final speed. What is the final speed of the bomb just before it explodes
A 150 g ball and a 220 g ball are connected by a 36{rm cm}-long, mass less, rigid rod. The balls rotate about their center of mass at 130 rpm. What is the speed of the 150 g ball.
Electric charge Q has been spread uniformly over a circular arc of radius R and central angle 40 degrees. What is the potential at point P, center of curvature of the arc.
A Proton is located at x=2.0 nm, y=0.0 nm and an electron is located at x=0.0nm, y=4.0 nm. Find the attractive Coulombic force between them
When in deep space, the block accelerates at 4.2 m/s^2 even as a 120 N force is applied to it. The coefficient of static friction for a particular plane and this block is 0.31. What angle can this plane make with horizontal before the object starts t..
An aluminum wire having a cross-sectional area equal to 2.70 10-6 m2 carries a current of 6.50 A. The density of aluminum is 2.70 g/cm3. calculate the drift speed of the electrons in the wire
The root-mean-square speed (thermal speed) of the molecules of a gas is 200 m/s at a temperature 23.0°C.
A 500- kg ice boat moves on runners on essentially frictionless ice. A steady wind blows, What was the force due to the wind
A bowling ball (mass = 7.2 kg, radius = 0.11 m) and a billiard ball (mass = 0.39 kg, radius = 0.028 m) may each be treated as uniform spheres
The three resistors are identical with R1 = R2 = R3= 160 ?, and the battery voltage is 50 V. What is the current through resistor R2? R2 and R3 are parallel so these need to be treated with R1 as Requiv = R1+ (R2*R3)/R2+R3 but don't know where to ..
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