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A bicycle tire rolls down a 25 m hill and crashes into a car door. If the tire has a mass of 1.25 Kg with a 0.75 m radius and the door has a mass of 100 Kg, how fast did the tire collide with the door?
Object 1 has a mass m1 and a velocity 1 = (2.87 m/s). Object 2 has a mass m2 and a velocity 2 = (3.01 m/s). The total momentum of these two objects has a magnitude of 18.0 kg • m/s and points in a direction 66.5° above the positive x-axis. Find out m..
A uniform plank of length 4.3 m and weight 201 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x could a person who weighs 449 N walk on the overhanging part of the p..
A thin layer of oil (n=1.25) is floating on water (n=1.33). What is the minimum non zero thickness of the oil in the region
A box weighing 600 N is at rest on a ramp at an angle of 32.5o with the horizontal. Find the minimum force required to move the box down the ramp
Fill a glass with water. Look down through the water, and then through the glass to your hand on the outside. Can you see it? Tip the glass towards you and watch your hand disappear. Why? Do you know what physical phenomena this observation is rel..
A 0.80m -long metal rod is dropped vertically onto a marble floor. When the rod strikes the floor, What is the speed of sound in the rod
Accomplished silver workers in India can pound silver into incredibly thin sheets, as thin as 3.00 10-7 m, Find the area of such a sheet that can be formed
The force stretching the D string on a certain guitar is 156 N. What is the speed of the waves on the string
A student (m = 58 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.04 s. From what height did the student fall
A child's toy consists of a piece of plastic attached to a spring in the figure below. The spring is compressed against the floor a distance of 2.00 cm, estimate the force constant of the spring
Practical steam engines utilize 475°C steam, which is later exhausted at 300°C. What is the overall efficiency of the two engines
here is a potential difference of 5.0 V between the ends of a 60 cm long graphite rod that has a cross-sectional area of 1.0 mm2. Find the resistance of the rod
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