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1. Suppose a molecular motor consumes 3 ATP molecules in every step. If this motor has a step size of 5.8 nm, what is the maximum force the motor could exert? (The energy released when a single ATP molecule is consumed is EATP = 5. 10-20 J. (answer is in pN)
High-speed stroboscopic photographs show that the head of a 220-g golf club is traveling at 42 m/s, Find the speed of the golf ball just after impact
An electron is launched at 3.20x10 6 m/s into a 6.30 T magnetic field. What is the diameter of its orbit, what is the magnitude of the force on the wire
A jet flying at 107 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, Calculate the magnitude of the necessary lifting force
An object of mass 5kg is moving with an momentum of 50 kg m/s. What is the speed of the object? What is the magnitude of the momentum of the object
An object 5.00 mm tall is placed 6.00 cm to the left of a converging lens of focal length 20.0 cm. How far away from the lens is the image formed
The engine of an aircraft propeller delivers an amount of power 177 hp to the propeller at a rotational velocity of 2390rev/min, How much torque does the aircraft engine provide
One gallon of gasoline contains 3.1 multiply.gif 107 calories of potential energy that are released during combustion. what is the average force produced by the gasoline
The frequency of an opera singer is 450 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer who is running down the road towards the opera singer with a speed 25.0 m/s.
What would be the potential difference VC - VB across the thin resistor if the battery emf is 4.00 volts? Suppose that the electric field in the thick wires is very small (so that the potential differences along the thick wires are negligible)
A challenge gaining prominence throughout the planet is the increased need for \"green\" or sustainable energy. In certain parts of the country, how much energy does the wind turbine generate
A 45.0kg girl is standing on a 170 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.53m/s relative to the plank.
A circular solenoid contains 100.0 turns of wire and carries a current of 2.0 amps. Calculate the magnetic flux through one turn of the wire
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