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The filament of a light bulb has a resistance of 570 . A voltage of 120 V is connected across the filament. How much current is in the filament?
In one design, the large spring with spring constant 2.0×10^4 was placed behind the cannon. The other end of the spring braced against a post that was firmly anchored to the ship's frame.
A submarine sends a sonar signal, which returns from another ship 2.250 s later. How far away is the other ship if the speed of sound in seawater is 1,530.0 m/s
A steel piano wire (Y = 2.0 x 10^11 Pa) has a diameter of 0.80 mm.One end is fixed in place and the other end is wrapped around atuning pin of diameter 8.0 mm. The length of the wire (notincluding the wire wrapped around the tuning pin) is 66 cm.
when a match is lit the air surrounding it is ionized creating charged particles. are these charged particles positive
A speedboat starts from rest and accelerates at +2.01 m/s2 for 7.00s. At the end of this time, the boatcontinues for an additional 6.00s with an acceleration of +0.518m/s2. Following this, the boat accelerates at -1.49m/s2 for 8.00s.
a 0.060 kg tennis ball, initially moving at a speed of 10 m/s, What is the change in momentum of the ball in kg m/s
Two microscope slides are stuck together and touching on one side where n=1.2 and wedged open on the other where n=1.5. These slides sit in air. How many fringes are there for the same slide configuration when it sits in water rather than air
A nozzle with a radius of 0.250 cm is attached to a garden hose with a radius of 0.950 cm, Calculate the maximum height to which water could be squirted if it emerges from the nozzle
A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 590 N. Determine the magnitude of acceleration of the elevator
explosives are used to blow a rock apart. the explosion blows the rock into three fragments. two fragments go off at a
The mass of the earth is 5.98 X 10^24 kg, the mass of the moon is 7.36 X 10 ^22 kg, How far is the center of mass of the earth-moon system from the center of the earth
two stationary positive point charges charge 1 of magnitude 3.80nc and charge 2 of magnitude 1.60nc are separated by a
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