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A hockey puck is swung at the end of a very slight 30 cm long string in a horizontal circle. If the speed of the puck is 7.0m/s and its mass is 165 grams, what is the tension force supplied by the string? You may assume for simplicity that the surfaces are friction-less. Please show all steps and explanation.
Suppose you are 69 cm from a plane mirror. What area of the mirror is used to reflect the rays entering one eye from a point on the tip of your nose if your pupil diameter is 4.90mm.
question1a bank robber travelling at 75 mihr in an escape car suddenly sees a barricade 150 meters ahead. the robber
A hoop and a disk, both of 0.68- m radius and 4.0- kg mass, are released from the top of an inclined plane 2.6 m high and 7.7 m long. What is the speed of the disk
Two waves have the exact same frequency, wavelength, and amplitude. They are both travelling in the +x direction, What is the phase difference between the two waves.
Illustrate what is the average power of the elevator motor during this period? How does this amount of power compare with its power during an upright trip with constant speed?
A 3-kg sphere makes and inelastic collinsion with a second sphere initially at rest. What is the mass of the second sphere
A pendulum of length 50cm is pulled 30 cm away from vertical axis and free from rest. What would be its speed at the bottom of its swing.
A person with a near-point distance of 29 cm is able to get a usable magnification of 12 with a particular magnifying glass. What is the friend's near-point distance
Find the force exerted by reflecting sunlight off a reflecting aluminum sheet in space if the area normal to the sunlight is 5000 m^2 and the solar intensity is 2500 W/m^2
An LC circuit has a 25mH inductor and a 12uF capacitor. The current is at its maximum value of 0.7A at t=0. How long does it take for the capacitor to be fully charged
As you drive by an AM radio station, you notice a sign saying that its antenna is 49 m high. what is the frequency of the station
A jet airplane is in level flight. The mass of the airplane is m = 8870 kg. At what angle is the airplane banked
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