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Consider the situation shown in figure (28-E5). The frame is made of the same material and has a uniform cross-sectional area everywhere. Calculate the amount of heat flowing per second through a cross-section of the bent part if the total heat taken out per second from the end at 100°C is 130 J.
a car with mass of 200 g is carring a block of 150 g climbingan incline of 30 degrees. assume the car and the attached
The barrel has a length of 0.60 m and an opening whose radius is 2.8 10-3 m. A bullet (mass = 2.7 10-3 kg) has a speed of 380 m/s after passing through this barrel. Ignore friction and examine the average pressure of the expanding gas.
A 59.3-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.714, What horizontal pushing force is required to just start the crate moving
A neon sign requires 10000 V for its operation. It operates from a 220 V receptacle. What must be the turns ratio Ns/Np of the transformer
A position vector in the first quadrant has an x component of 8 m and a magnitude of 10 m. What is the value of its y component?
Light is observed to converge to a point after being reflected froma plane mirror. Were the incident rays parallel, converging,or diverging prior to striking the mirror? Show a diagram to proveyour conclusion.
An Olympic high-jump champion jumps a record height of 2.45 m on the Earth. How high could this champion jump on the Moon
A particle with a charge of 14 µC experiences a force of 2.5 x 10-4 N when it moves at right angles to a magnetic field with a speed of 28.4 m/s. What force does this particle experience
Two conducting spheres, one of radius 0.010 m. and the other of radius 0.170 m., each have a charge 3.00E-08 C. and are very far apart. find the final potential (in volts) in each sphere
A ball is thrown vertically upward by an initial speed of 11 m/s. One second later, a stone is thrown vertically upward with an initial speed of 25 m/s. Discover the time it takes the stone to catch up with the ball.
What is the magnitude of the force on an electron that is in the region between the plates at a point accurately 2.52 mm from the positive plate
Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, by rotational inertia 4.31 kg·m2 about its central axis, is set spinning c..
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