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Your friend's 1.15 g graduation tassel hangs on a string from his rear-view mirror.
(a) When he accelerates from a stoplight, the tassel deflects backward toward the rear of the car hanging at an angle of 6.23° relative to the vertical. Find the tension in the string holding the tassel.
80 mA of current flows through a resistor connected in series to a 4.25v battery. What is the resistance of the resistor
An electric blanket is connected to a 120-V outlet and consumes 110 W of power. What is the resistance of the heater wire in the blanket
The collision is not head-on. After the collision, the two pucks fly apart with the angles shown in the drawing. Find out the final speed of puck A also Find out the final speed of puck B. m/s
A conducting slab (think of a large flat sheet of metal) is large compared to the size of individual particles and molecules, Where does the excess charge reside
About 1350 W/m2 of electromagnetic energy reaches the upper atmosphere of the earth from the sun, which is 1.5 × 1011 m away. estimate the average power output of the sun
A long cylindrical wire of radius R carries a current I. Let the z axis be a long the axis of the wire. The current density of the wire is j=1/pir^2. Find the current within the cross section of the wire or radius r
A Ferris wheel has a radius of 5.0 m and makes one revolution in 8.0 seconds. A person weighing 670 N is sitting on one of the benches attached at the rim of the wheel. what is the apparent weight of the person
Two stationary positive point charges, charge 1 of magnitude 3.80 and charge 2 of magnitude 1.95 , are separated by a distance of 38.0 . An electron is released from rest at the point midway between the two charges.
A man pushing a mop across a floor causes it to undergo two displacements. Find the magnitude and direction of the second displacement
the mean lifetime of muons in their rest frame is 2.20us. What is the mean distance traveled before it decays
A 380 kg piano slides 3.9 m down a 27 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. Determine the work done by the man on the piano
Describe fusion. What role does a tokamak play in a fusion reactor? What are the advantages of nuclear power
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