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A small can is hanging from the ceiling. A rifle is aimed directly at the can, as the figure illustrates. At the instant the gun is fired, the can is released. Ignore air resistance and show that the bullet will always strike the can, regardless of the initial speed of the bullet. Suppose that the bullet strikes the can before they can reach the ground.
A 785 Hz sound wave travels through a gas. If the wavelength of the sound is 0.6 m, what is the speed of sound in the gas
A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 6.22 m/s relative to the ground. How fast is the train moving
a 8 kg brick moves along an x axis. its acceleration as a function of its position is shown below. what is the net work
A man working out in a gym has a metabolic rate of 2500 kJ/h. If he eliminates 0.34 kg of perspiration during that hour, find at what rate is thermal energy dissipated by evaporation of sweat
A nearsighted person wears contacts with a focal length of ? 6.5cm, what is her uncorrected far-point distance
A long solenoid has 150 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 2.40 cm perpendicular to the solenoid axis. The speed of the electron is 0.056 c (c = speed of light). Find the current i in the solen..
a landing airplane makes contact with the runway with a speed of 40 m/s and moves toward the south. What is the average acceleration of the airplane
An Ar+ laser emits radiation at a wavelength of 515 nm, and a power of 7 W. Determine how many argon ions
A 9000pF capacitor holds plus and minus charges of 1.35×10?7C . What is the voltage across the capacitor
A 1.90-cm-high object is situated 12.8 cm in front of a concave mirror that has a radius of curvature of 10.4 cm, calculate the location and the height of the image
A box is being pushed to the right parallel to the x-axis by a force of 15.0 N. find the magnitude of the net force acting on the box
A drinking straw 20 cm long and 3 mm in diameter stands vertically in a cup of juice 8.0cm in diameter. A section of straw 6.5cm long extends above the juice. A child sucks on the straw, and the level of juice in the glass begins dropping at 0.23c..
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