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A circular wire loop of area 0.18m squared carries a current of 4 A. the coil lies in a horizontal plane with the current flowing in the counterclockwise direction when viewed from above. At this point the earth’s magnetic field is 1.2x10^-4 T directed 60 degrees below the horizontal. What is the magnitude of the torque which acts on the loop?
An aluminum baseball bat has a length of 0.81 m at a temperature of 20°C. When the temperature of the bat is raised, the bat lengthens by 0.00016 m. Determine the final temperature of the bat.
What angle did the hawk make with the horizontal throughout its descent? For how long did the mouse enjoy the free fall.
Steven and Danny are standing apart from each other throwing a ball. Steven throws the ball to Danny and Danny throws it back immediately. How far are they apart from each other
A 0.200 kg block is placed on a vertical spring (k = 5.00x10^3) and pushed downward, compressing the spring 0.100 m. As the block is free, it leaves the spring and continues to travel upward. What height above the point of release would block reac..
An early model of the atom, proposed by Rutherford after his discovery of the atomic nucleus, had a positive point charge, What is the electric field at the surface of the atom
The Venturi tube shown in the figure below may be used as a fluid flowmeter. Find the speed of the gasoline as it leaves the hose
Two equal point charges of magnitude 4.0 ?C are situated along the x-axis at x1 = -2.0 m and x2 = -2.0 m. What is the electric potential energy of this system of charges
Man pushes a 27-kg block 9.1 m along a level floor at constant speed with a force directed 45° below the horizontal. how much work does the man do on the block
A bouncy ball of mass 81 g is thrown straight into a wall at the speed of 23 m/s. What is the impulse applied to the ball by the collision
Calculate kinetic energy of a solid uniform sphere with a radius of 0.145m and a mass of 14.0kg if it is rotating at 6.35rad/s about an axis through its center
When a .22-caliber rifle is fired, the expanding gas from the burning gunpowder creates a pressure behind the bullet. determine the average pressure of the expanding gas
Laser ligh can be focused (at best) to a spot with a redius [r] equal to its wavelength ([lamba]). Suppose that a 1.0 W beam of green laser light, Estimate the acceleration of the particle
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