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Q1. A plane travels 1.20 km at an angle of 39 degrees to the ground then changes directions and travles 5.20 km at an angle of 19 degrees to the ground. What is the magnitude of the planes total displacement?
Q2. Compute the average number of ion pairs produced along the entire paths of 12.0 MeV electrons that are brought to rest in air. Would number of ion pairs produced in soft tissue be significantly different?
Q3. A wire has a length of 9.00 x 10-2 m and is used to make a circular coil of one turn. There is a current of 4.92 A in the wire. In the presence of a 2.90 T magnetic field, what is the maximum torque that this coil can experience?
A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.40 m. The cylinder is suspended some meters off the ground with its axis oriented horizontally, and turns on that axis without friction.
Estimate the gravitational force between the Sun and Venus. The mass of the Sun is 1.99×10^30 kg. The mass of Venus is 48.7×10^23 kg. The distance between them is 10.8×10^10 m.
Determine the new planets mass density to earth mass density
Find the final displacement from the starting point. How much greater was the distance she walked than her displacement.
A 260 wooden raft floats on a lake. When an 80 man stands on the raft, it sinks 5.0 deeper into the water. When he steps off, the raft vibrates for a while. What is the frequency of vibration.
What is height of the cliff
Find the force exerted by the plane on the pilot
Megan's mass is 27 kg. She climbs the 4.8 m ladder of a slide and reaches a velocity of 3.6 m/s at the bottom of the slide. How much work was completed by friction on Megan? Imagine that air resistance is negligible.
What is the magnitude of the vertical component of its velocity as it strikes the ground.
A 73 kg parachutist descends during a vertical height of 420 m with constant speed. Find the increase in entropy produced by the parachutist; assume the air temperature is 21°C.
Assume that, when Hiawatha aims vertically, his arrow reaches a maximum height of 20 m. Use this fact to find the initial speed u with which Hiawatha can launch the arrow vertically.
While John is travelling along an interstate highway, he notices a 139 mi marker as he passes through town. Later John passes a 116 mi marker. What is the distance between town and John's current location.
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