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A potential difference of 80 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the cell?
A solid cylinder with a mass of 1.5 Kg initially at rest rolls down from a height of 2.00 m. What will be its speed when it reaches the bottom
a hair dryer operates at 1800 watts along with a 240 watt power resistor connected in series. Utilizing a 120 volt source, determine the individual resistance Ri and the voltage drop Vi across each compenent in the circuit
A 30-06 caliber hunting rifle fires a bullet of mass 0.0146 kg with the velocity of 314 m/s to the right. The rifle has a mass of 2.49 kg.
Batman, mass = 91kg, jumps straight down from a bridge into a boat, mass =510kg, in which a criminal is fleeing. The velocity of the boat is initially =11m/s. What is the velocity of the boat after batman lands on it?
In a series circuit, a generator (1423 Hz, 16.3 V) is connected to a 16.2-O resistor, a 4.13-µF capacitor, and a 4.92-mH inductor. Find the voltage across each circuit element
The conductive bar is moving with a constant speed v = 6.4 m/s, the magnetic field B = 0.75T, the length of bar inside of B field l = 50cm, How much is the power of the bulb
If the kinetic energy density of a fluid decreases along a horizontal streamline, what happens to the pressure of the fluid
A microwave oven operates at 2.4 GHz with an intensity inside the oven of 2350 W/m^2. What is the amplitude of the oscillating magnetic field
A child is twirling a 0.0215-kg ball on a string in a horizontal circle whose radius is 0.143 m. The ball travels once around the circle in 0.586 s. Determine the centripetal force acting on the ball
A 0.99-cm-diameter microscope objective has a focal length of 2.6 mm. It is used in visible light with a wavelength of 532 nm. What is the objective's resolving power if used in air
A spring stretches 4.1 cm when a 11 g mass is hung from it. If a total mass of 25 g attached to this spring oscillates in simple harmonic motion,how to calculate the period of motion.
A rod supports a 2.35 kg lamp. a) What is the tension in the rod? b) Estimate the components of the force that the bracket exerts on the rod.
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