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A uniform bridge 20.0 m long and weighing 4.00 x 10^5 N is supported by two pillars located 3.00 m from each end. If a 1.96 x10^4 N car is parked 8.00 m from one end of the bridge, how muc hforce does each pillar exert?
question a mass spectrometer is used to examine the isotopes of uranium. ions in the beam emerge from the velocity
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. find the angular speed of the neutron star
a horizontal conductor that is part of a power line carries a current of 6600 a from south to north. earths magnetic
At time t=0 a grinding wheel has an angular velocity of 22.0 rad/s. It has a constant angular acceleration of 32.0 rad/s^2 until a circuit breaker trips at time t = 2.00 s. At what time does the wheel stop
A spaceship is approaching a space station at a speed of 2.0 105 m/s. find the frequency of the beacon observed on the spaceship
A force of 83 Newtons is applied to a wire with a diameter of 0.5 mm. What is the tensile stress (in N/m2) in the wire
At one instant, the center of mass of a system of two particles is located on the x-axis at x = 2.0 and has a velocity of (5.0 ). What is the velocity of the particle at the origin
A 0.39 m long and 0.39 m wide loop is moved at a constant velocity of 0.71 m/s into a perpendicular constant magnetic field of 0.51 T. Calculate the magnitude of the induced voltage in the loop.
The number of protons in the known universe is about 10^80, and the radius of a proton is about 10^-15m. Estimate the volume of a sphere containing all of these protons if they were placed in contact with each other
a 80.0-kg airplane pilot pulls out of a dive by following at constant speed the arc of a circle whose radius is 300 m.
You are trying to shoot supplies from the ground so that they reach the top of a plane while flying low. The plane is flying at an altitude of y=20 meters high and with a speed of 30m/s, and you want to project your medical supplies with an initia..
A falling skydiver of mass 86.0 kg accelerates downward at 6.7 m/s2. What is the upward force due to air resistance
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