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Two protons are moving directly toward one another. When they arevery far apart, their initial speeds are 2.1 106 m/s. What is the distance of closest approach?
Hakeem throws an 8.50 g ball straight down from a height of 2.0 m. The ball strikes the floor at the speed of 7.5 m/s. What was the initial speed of the ball? Suppose that air resistance is negligible.
A person is nearsighted and can clearly focus on objects that are no farther than 2.6 m away from her eyes. What is the focal length of the borrowed glasses
A muon is a lepton that is a higher-mass (rest mass 105 MeV/c^2) sibling to the electron. How many muons survive to reach the surface
A 2.94g aluminum bullet at 31.0°C is fired at a speed of 236 m/s into a large block of ice at 0°C, in which it embeds itself. What quantity of ice melts
What is the minimum soap-film thickness (n = 1.33) in air that will produce constructive interference in reflection for red (? = 644nm ) light
An object is moving in simple harmonic motion with an amplitude of 16 cm and a frequency of 2.0 Hz. Calculate the maximum magnitude of the velocity
Racing drivers like to warm up the tyres of their car as soon as possible. One reason is that warm tyres grip the road better but the temperature also affects the pressure of the air into he tyres.
This can lead to adverse decisions on product costing and pricing. To address this issue, some authors have suggested using the Activity Based Costing method." Do you agree with the above statement? Discuss and give relevant examples to support you..
A 362 g object is attached to a spring and executes simple harmonic motion with the period of 0.200 s. If the total energy of the system is 6.71 J.
A 1,000-W motor powers a hoist used to lift cars at a service station. If the original motor is replaced with one rated at 2,000 W, how long would it take to complete this task
An aluminum wire having a cross-sectional area equal to 3.20X10^-6 m^2 carries a current of 6.50 A. Find the drift speed of the electrons in the wire
A student throws a set of keys vertically upward to his fraternity brother, who is in a window 3.60 m above. The brother's outstretched hand catches the keys 1.20 s later.
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