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Q1. A rowboat crosses a river with a velocity of 3.74 mi/h at an angle 62.50° north of west relative to the water. The river is 0.550 mi wide and carries an eastward current of 1.250 mi/h. How far upstream is the boat while it reaches the opposite shore?
Q2. A loudspeaker of mass 25.0 is suspended the distance of = 2.40 below ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 2.50. What is the tension in each of cables?
When a second pipe is played at the same time, a 1.40 Hz beat note is heard. By how much is the second pipe too long.
Determine magnitude of the force from the ground on each front wheel. what is magnitude of the duck's velocity.
When G was first measured by Henry Cavendish, newspapers of the time hailed his experiment as "weighing Earth experiment." And Why.
A ranger in a national park is driving at 59 km/h while a deer jumps onto the road 61 m ahead of the vehicle. After a reaction time of t s, ranger applies the brakes to produce an acceleration of -3 m/s2. What is the maximum reaction time allowed if ..
What is the flux of Zn moving down the rod? Write down all your assumptions (hint: you will need to look up the density of copper. You do not need to account for the variation in density with alloy composition). Clarify what the boundary conditions w..
An airplane is flying with the velocity of 85.0 m/s at an angle of 20.0 degrees above the horizontal. When the plane is a distance 107 m directly above the dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far..
What will be the equilibrium temperature when a 223 g block of copper at 258 C is placed in the 178 g aluminium calorimeter cup containing 874 g of water at 13.2 C.
What is work done by the non-conservative force
A mass of 1.62 kg stretches a vertical spring 0.328 m. If the spring is stretched an additional 0.136 m and released, how long does it take to reach the (new) equilibrium position again.
An 8,000 rocket is shot straight up from the Earth's surface with the initial speed of 800 m/s. How high does it go.
A 44.0 kg child is in a swing that is attached to ropes 1.60 m long. The acceleration of gravity is 9.81 m/s2. Find the gravitational potential energy associated with the child relative to the child's lowest position under the following conditions.
If frame rate increases what happens to the PRF
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