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A championship weight lifter did 1.10 * 10 to the power of 4 J of work on a set of barbells weighing 3680N. how much gravitational potential energy did the barbells have at the maximum height of a lift?
Consider the lead isotope 207Pb. How many electrons are in a 207Pb neutral atom? How many protons are in a 207Pb neutral atom? How many neutrons are in a 207Pb neutral atom? The lead nucleus has a diameter of 14.2 fm. What is the electric potential..
A geodesic dome constructed with an aluminum framework is a nearly perfect hemisphere; its diameter measures 56.0 m on a winter day at a temperature of 12.5°C.
A 9 ohm resistor are connected in series to a power supply. The voltage drop across the 6 ohm resistor is measured with a amphmeter and found to be 12.0 volts. what is the voltage setting of the power supply
A spool whose inner core has a radius of 1.00 cm and whose end caps have a radius of 1.50 cm has a tightly wound inner core. what is the angular speed of the spool
A particle of charge q starts at rest and experiences an electric field varying along the x direction as bx where b>0 is some constant. find its kinetic energy
A 10 kilogram mass hangs on a rope wrapped around a freely rotating 2 kilogram cylinder of radius 10 centimeter. Find the accelerations of both the mass and the cylinder
A 28.0-kg block is connected to an empty 2.66-kg bucket by a cord running over a frictionless pulley. Calculate the acceleration of the system
The voltage supplied by a wall socket varies with time, reversing its polarity with a constant frequency, as shown in the graph. (Figure 1) What is the rms value Vrms of the voltage plotted in the graph? Express your answer in volts.
A space station, in the form of a wheel 133 m in diameter, rotates to provide an "artificial gravity" of 2.20 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of the wheel's rotation in revolutions per minute that wi..
A wheel 55-cm in diameter accelerates uniformly from 240 rpm to 395 rpm in 5.0 s. How far will a point on the edge of the wheel have travelled in this time.
In the lungs there are tiny sacs of air, which are called alveoli. An oxygen molecule (mass = 5.30 x 10 -26 kg) is trapped within a sac, and the ambiguity in its position is 0.130mm. What is the minimum uncertainty in the velocity of this oxygen mol..
Estimate the time constant in a RC circuit.
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