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Q1. A rifle with a barrel length of 60 cm fires a 12 g bullet with a horizontal speed of 360 m/s. The bullet strikes a block of wood and penetrates to a depth of 11 cm.
How long does it take the bullet to come to rest?
Q2. How much work should Denise do to drag her basket of laundry of mass 6.0 kg a distance of 3.0 m along a floor, if the force she exerts is a constant 50.0 N at an angle of 70.0° with the horizontal?
A 6.4kg ball, hanging from the ceiling by a light wire 135cm long, is struck in an elastic collision by a 1.80 ball moving horizontally at 4.20 m/s just before the collision. Find the tension in the wire just after the collision.
What is the amplitude of the oscillations . Could you think of a simple method for determining the focal length of a converging lens.
A 4 kg fish swimming 3 m/s swallows an absent minded 2 kg fish at rest. What is the speed of the large fish instantly after lunch.
Find density of the object
Calculate the net work done on Gas
A young boy swings a yo-yo horizontally above his head at an angular acceleration of 0.32 rad/s^2. If the tangential acceleration of the yo-yo at the end of the string is 0.15 m/s^2, how long is string.
What is magnitude of the electric field
Calculate the threshold wavelength, in nm, of a metal if that metal emits an electron with a kinetic energy of 6.32 × 10-19 J when illuminated with light that has a frequency of 1.97 × 1015 Hz.
Driving in your car with a constant speed of 13 m/s, you encounter a bump in the road that has a circular cross section, as indicated in the figure. If the radius of curvature of the bump is r = 29 m, find the apparent weight of a 59-kg person in you..
What is magnitude of the breaking force
Compute magnitude and direction of magnetic field produced by the moving belt at a point just above its surface .
Direction of the surface winds What is the expected composition
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