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A .400 kg object isswinging in circular path and in a vertical plane on a .500 mlength string. If the angular speed is the bottom is 8 rad/s. what is the tension on the string when the object is at the bottom of the circle?
if two equal charges are separated by a certain distance the force of repulsion is f. given f1 if each charge in f1 is
An evacuated spherical diving bell containing a camera is in the ocean at a depth of 143m. It has a flat, transparent, Find the magnitude of the total force on the port
q1. a race car has the mass of 702 kg. it starts from rest and travels 45.0 m in 3.0 s. the car is uniformly
A small piece of dust (mass=1.8 \(\mu\)\ g) travels horizontally through an electric air cleaner in which the electric field is 524 N/C. What is the charge on the dust particle
A child slides down a snow-covered slope on a sled. At the top of the hill, her mother gives her a push at a speed of 1.5 m/s to get her started. find the angle that the hill makes with the horizontal
The index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660. What is the angular separation between the red and violet components of the spectrum that emerges from the glass
A dipole is formed by point charges +3.8 micro Coulomb and -3.8 micro Coulomb placed on the axis at (0.45 m, 0) and (-0.45m, 0), respectively. At what positions on the axis does the potential have the value 7.7×105 V?
1.a 0.089 kg bullet is traveling at 338 ms when it strikes a block of wood. if the bullet penetrates 0.74 m into the
a gas has a initial volume of 1 m^3.it is expanded to five times its original volume through a quasistatic process for which p= av^4, how much work is done by the expanding gas
The radius of the moon is 1.74 × 106 m, the radius of the sun is 6.96 × 108 m, the average moon-earth distance is 3.84 × 108 m, and the average sun-earth distance is 1.496 × 1011 m. What is the apparent angle the diameter of the moon subtends, ..
A torsion pendulum is constructed of a copper rod of radius 3 mm and length 50 cm. what is the period of oscillation
A transformer connected to a 120 V ac line needs to supply 12,500 Vac to power an immense neon sign used as a business advertisement. What is the ration of secondary to primary turns of the transformer needed in order to make the sing light-up?
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