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Q1. Snoop, in hot pursuit of the Red Baron, is flying his vintage warplane in a "loop-the-loop" path. His instruments tell him that plane is level (at the bottom of the loop) and travelling at a speed of 180km/h. He is sitting on a set of bathroom scales. He notes that scales show four times his normal weight. What is the radius of the loop, in meters?
Q2. Richard, mass 75 kg, and Carmelita, who is lighter, are enjoying Lake Merced at dusk in a 35 kg canoe. When the canoe is at rest in the placid water, they exchange seats, which are 3.0 m apart and symmetrically located respecting the canoe's center. Ricardo notices that the canoe moved 45 cm relative to a submerged log throughout the exchange and calculates Carmelita's mass, which she has not told him. What is it?
As a result of the friction of tides, the earth rotates more slowly as time progresses. Each year the time it takes for the earth to complete one rotation increases by 20microseconds. at what rate [J/(yr*K)] is entropy being generated due to tidal ..
A horizontal force of 200N is applied to a 55kg cart by a child across a 10m level surface. The cart accelerates at 2m/s^2. What force of friction acts to retard the motion of the cart
Find the maximum height reached by the 2.70 {rm kg} object. In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57.
Three equal charges of magnitude +4.00 uC are placed at the corners of an equilateral triangle of side 2 cm. what is the electric potential energy of the system
An archer pulls back 0.75 m on a bow which has a stiffness of 200 N/m. The arrow weighs 50 g. What is the velocity of the arrow immediately after release
Assuming frictionless conditions, a table has a hanging mass, m1, over a pulley at the left side and another hanging mass, If m1 = .45kg, & m2 = .3kg, & m3 = .25kg what is the new accelration of the system
starting from its nest, an eagle flies at constant speed for 3.0 min due east, then 4.0 min due north. how long is the eagle in the air
What is the frequency of the small axial oscillations that the electron will undergo if it is free along the z-axis near the origin.
Four closed surfaces, S1 through S4, together with the charges %u22122Q, Q, Find the electric flux through each surface
A billiard ball of mass m = 0.25 kg strikes the cushion of a billiard table at θ1 = 52 ° and a speed v1 = 27 m/s. What is the magnitude of its change in momentum
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800kg/m3, Calculate the weight of the rod, w
If the sphere is enclosed in a room whose walls are kept at -5°C, what is the net flow rate of energy out of the sphere
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