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At what temperature does a carbon resistor have a resistance of 995ohms, if it has a resistance of 1000 ohms at 20 degrees? What is its conductivity at the new temperature?
A satellite has a mass of 5950 kg and is in a circular orbit 4.60 105 m above the surface of a planet. The period of the orbit is two hours. The radius of the planet is 4.15 106 m. What is the true weight of the satellite when it is at rest on the pl..
If you throw a ball upward with an initial speed of 4 m/s at 1.5 m above the ground find the flying time for this free fall motio
A person does 100 joules of work of pulling back the string of the bow. What will be the original speed of a 0.5 killogram arrow when it's fired from the bow.
A hotel elevator ascends 160m with a maximum speed of 4.20 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s2. How long does it take to make the complete trip from bottom to top.
The speed of the vaccine (p=1100 kg/m3) is held in a reservoirwhere a high pressure pushes it out. Find the speed at which the vaccine emerges
An x-ray photon frequency 3x10 HZ collides with an electron at rest and is scattered through 90 degrees. What is the kinetic energy of the scattered electron
A spherical capacitor with a 1.20 mm gap between the spheres has a capacitance of 60.0 pf. What are the diameters of the two spheres
A person exerts a horizontal force of F = 169N in the test apparatus. (h = 0.32m.) Find the horizontal force M that his flexor muscle exerts on his fore arm.
an electron in an x-ray machine is accelerated through a potential difference of 1.00 times 104 v before it hits the
The flywheel of a gasoline engine is required to give up 530J of kinetic energy while its angular velocity decreases from 690 rev/min to 550 rev/min. What moment of inertia is required
Explain what is the current in the cell during this period? Assume that the gold ions carry one elementary unit of positive charge.
A 3.80-kg cylindrical rod of length 2.00 m is suspended from a horizontal bar so it is free to swing about that end. What is the angular velocity of the rod immediately after the collision
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