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A) An aluminum rod is 21.0 cm long at 20°C and has a mass of 350 gram. If 12500J of energy is added to the rod by heat, evaluate what is the change in length of the rod?
mm
B) A 65 g ice cube at 0°C is heated until 40 gram has become water at 100°C and 25 g has become steam at 100°C. Find how much energy was added to accomplish the transformation?
J
At its farthest point, the three-point line is 7.24 meters away from the basket in the NBA. A basketball player stands at this point and releases his shot from a height of 2.05 meters at a 35.0 degree angle.
Two uniform, solid disks are rotating freely about the same axis. Then they are linked together without the aid of any external influences. Before being connected.
A box of textbooks of mass 25.9kg rests on a loading ramp that makes an angle \alpha with the horizontal. find the minimum angle at which the box starts to slip
A 0.320 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball? kg (b) What fraction of the original k..
Consider an RC circuit with R = 3.10k? , C = 1.40?F . The rms applied voltage is 240V at 60.0Hz. compute the phase angle between voltage and current
Mechanical Work is defined as a scalar product between the applied force, F and the displacement vector, d, of the motion, W = F · d. how much the mechanical work was done
A 0.13 kg baseball is hit by a .95 kg bat. The contact point on the bat is moving at 40 m/s just prior to ballbat contact, How fast is the ball moving just after impact
A movig particle encounters an external electric field thatdecreases its kinetic energy from 9510 eV to 6610 eV as theparticle moves from position A to position B. Theelectric potential at A is -59.0 V, and that at Bis +24.0 V. Determine the charge o..
a rocket initially at rest on the ground accelerates straight upward from rest with constant acceleration 44.1ms2 . the
A glass lens has a convex surface with radius 25.0 cm and a concave surface with a radius of 50.0 cm. The glass has index of refraction of 1.51. Calculate the focal length of this lens
A wire carrying .8 A of current is bent into a right angle the j lenght .04m and i .3m. Determine the net force on the wire from the magnetic field
A block with mass m = 6.0 kg is attached to two springs with spring constants kleft = 29.0 N/m and kright = 57.0 N/m. What is the effective spring constant of the two springs
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