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The sketch shows a conical pendulum. The ball swings in a circular path because of the string attached at the top. The tension T in the string and weight W of the ball are shown by vectors. A parallelogram created with these vectors shows that their resultant Flies in the plane of the circle.
Suppose that in Sherwood Forest, the average radius of a tree is R= 1 m and the average number of trees per unit area is 0.005m^(−2). If Robin Hood shoots an arrow in a randomdirection, how far, on average, will it travel before itstrikes a tree?
How much heat flows from 1.00 kg of water at 38.0°C when it is placed in contact with 1.00 kg of 20°C water in reaching equilibrium, What is the change in entropy due to this heat transfer
A 12,000 lb truck is southbound on the Guadalupe street. Whenit enters the intersection with the MLK boulevard, its velocity is20 MPH in the direction 30° East from South.
Four charges, Aq, Bq, Cq, and Dq (where q = 2.25 ×10?7 C), sit in a plane at the corners of a square whose sides have length d = 82.5 cm. A charge, Eq, is placed at the origin at the center of the square.
A person is standing at the edge of the water and looking out at the ocean. The height of the person's eyes above the water is h = 1.4 m, How far is it to the horizon
A rocket-powered hockey puck has a thrust of 1.60N and a total mass of 2.10kg. How far does the puck land from the base of the table
Some bacteria are propelled by biological motors that spin hair-like flagella. What is the angular speed (the magnitude of the angular velocity) of this bacterial motor
A thin film of oil (n = 1.22) is located on smooth, wet pavement. When viewed from a direction perpendicular to the pavement, What is the minimum thickness of the oil film
A heart defibrillator delivering 400 J of energy by discharging a capacitor initially at 10,000 V has a capacitance of 8.00 µF, What is the voltage of the second defibrillator
Now consider an atom consisting of two electrons, each of charge -e, embedded in a sphere of charge +2e and radius R. In equilibrium, each electron is a distance d from the center of the atom (the figure (Figure 1) ). Find the distance d in terms of ..
a person exerts force of 35n on the end of an door 88 cm wide, what is the magnitude of torque if the force is exerted perpendicular to the door
A falling skydiver of mass 86.0 kg accelerates downward at 6.7 m/s2. What is the upward force due to air resistance
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