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A beam of protons at an accelerator creates a current of 164uA. If the beam is focused on a target, how many protons strike the target in 60.0s?
High-speed stroboscopic photographs show that the head of a 250-g golf club is traveling at 52 m/s just before it strikes a 46-g golf ball at rest on a tee. Find the speed of the golf ball just after impact
The two items attract one another with a force of strength 0.6 N when they are 1 cm apart. If they have equal but opposite charges, a) what is the magnitude of the charge
A child is walking toward a wall at a speed of 1.00m/s in a direction at right angles to the wall. what is the frequency of the whistle
A 20x telescope has a 12-cm diameter objective lens. What minimum diameter should the eyepiece lens have to collect all the light rays from an on axis distant source.
q1. an archer puts a 0.26 kg arrow to the bowstring. an average force of 213 n is exerted to draw the string back 1.3
A 16.5 kg gold bar at 26.0°C is placed in a large, insulated 0.800 kg glass container at 15.0°C with 2.00 kg of water at 25.0°C
Telephone signals are often transmitted over long distances by microwaves. What is the frequency of microwave radiation with a wavelength of 3.3 cm
An airplane is sent on a rescue mission to help a stranded explorer near the South Pole. The plane cannot land, but instead drops a supply package of mass m = 58 kg while it is flying horizontally with a speed of vp = 116 m/s. What is the mass of ..
A Ferris wheel accelerates from rest to an angular speed of 1.5 rad s-1 in 12 s. what is the net torque on the wheel
A 2.68 mol sample of an ideal monatomic gas undergoes the reversible process shown in the figure. calculate How much work is done by the gas
A 10000 kg empty railroad car moving at 3 m/s collides with a loaded railroad car weighing 196000 N and couples with it. What is the final velocity of the combined railroad cars
What is the amplitude of the oscillations . Could you think of a simple method for determining the focal length of a converging lens.
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