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a recreational aircraft has a lift- off speed of 110 km/hr. If the aircraft has a constant acceleration of 5m/s^2, what minimum runway length does it need for take off?
A 0.43 T magnetic field is perpendicular to a circular loop of wire with 56 turns and a radius of 16cm .If the magnetic field is reduced to zero in 0.14s , what is the magnitude of the induced emf?
n = 3.60 mol of Hydrogen gas is initially at T = 340 K temperature and pi = 3.32×105 Pa pressure, How much entropy did the gas emit
If you now place a pencil under the edge of the mirror nearer the wall, tilting it upward by 5.0, how much higher on the wall is the spot?
A sample of an ideal gas is at a temperature of 300 K. The rms molecular speed at this temperature is measured as 1368 m/s. Calculate the mass of a molecule of this gas
A person lifts a 5kg cement block a vertical distance of 2.3m and after that aeries the block horizontally a distance of 6m. Determine the work completed by the person and by the force of gravity in this process.
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 3.8 x 1028 kg and 1.3 x 103 m. Find the density of such a star
The Bunker Hill Monument is a 67 m tall granite obelisk that contains 294 steps. If it takes a 735N person 15 minutes to climb to the top, calculate the power of this person
Two identical metallic blocks resting on a frictionless horizontal surface are connected by a light metallic spring having a spring constant k as shown in the figure and an unstretched length Li
A 68.4-kg bungee jumper is standing on a tall platform (h0 = 45.4 m). The bungee cord has an unstrained length of L0 = 8.73 m, Determine how far the bungee jumper is from the water when he reaches the lowest point in his fall
A person who weighs 68 kg steps onto a spring scale in the bathroom, and spring compresses by 0.79cm. (a) what is the spring constant? (b) What is the weight of another person who compresses the spring by 0.34cm.
An engine absorbs 1.72 kJ from a hot reservoir at 277°C and expels 1.15 kJ to a cold reservoir at 27°C in each cycle. How much work is done by the engine in each cycle
A 90 kg linebacker running downfield at 10 m/s collides with a 65 kg referee who is at rest. What is the initial kinetic energy of the linebacker
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