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A 17 g bullet is accelerated in a rifle barrel 73.4 cm long to a speed of 493 m/s. Use the work-energy theorem tofind the average force exerted on the bullet while it is being accelerated. Answer in units of N.
A 3.00-g bullet traveling horizontally at 400 m/s hits a 3.00-kg wooden block, which is initially at rest on a smooth horizontal table. The bullet buries itself in the block without passing through. The speed of the block after the collision is:
Air (k = 1.4) flows isentropically through a converging-diverging nozzle from a large tank where it is maintained at 59F, 80 psia. Find the mach number and the velocity (ft/s) at the exit
Suppose two parallel conducting plates are separated by 0.45 cm of air. Find the maximum potential difference between the two parallel conducting plates in kV
Consider a rectangular swimming pool of depth 2.7 m with a width and length of 13 m. What is the force exerted by the water on one of the sidewalls of the pool
To measure the static friction coefficient between a 4.33-kg block and a vertical wall, the setup shown in the drawing is used. A spring (spring constant = 461 N/m) is attached to the block.
Consider a Boeing 777-200 airplane of wing span 60.93 m cruising horizontally at Mach 0.785, Find the emf induced across its wing
An outfielder throws a 0.150 kg baseball at a speed of 39.6m/s and an initial angle of 34° What is the kinetic energy of the baseball at the highest point of its trajectory.
Consider the 30N weight held by two cables shown below. The left-hand cable is horizontal. What is the tension in the cable slanted
A meter rule is balanced at the 70 cm mark by placing a 200-g mass at the 80 cm mark. At what point will the ruler balance if the 200-g mass is moved to the 90 cm mark?
A 22.5-mW laser beam of diameter 1.98 mm is reflected at normal incidence by a perfectly reflecting mirror. Calculate the radiation pressure on the mirror
A 0.19-kg ball on a stick is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the stick's tension is 20 N. Find the tension in the stick
(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 12.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mole. (b) Imagine adding electrons to the pin until the negative charge h..
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