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Examination number 1
2. From one airport simultaneously fly two planes. The first aircraft is flying to the east at a speed of 800 km / h, and the second plane - to the south at a speed of 600 km / h. What is the distance between the aircraft 2 hours after take-off and speed of the aircraft relative to the other?
27.Kakuyu minimum initial velocity of the projectile must have an anti-aircraft gun, to climb to a height of 12.5 km?
52.Materialnaya point moves along a circle of radius 10 cm with constant tangential acceleration 0.1 m / s2. After some time after the beginning of the movement, the acceleration is equal to the tangential?
77.Massa lifts passengers 800 kg. What moves the elevator acceleration, if it is known that the strength of the tension cable that supports the elevator: a) 12 kN; b) 6 kN?
102.Chelovek weighing 60 kg, a running speed of 5 m / s, catches trolley 40 kg mass moving at a speed of 2 m / s, and jumps to it. How fast will move the cart with a man?

Additional information

Verification work number 2
2.A spring stiffness suspended load weight. As a result, the spring stretches on = 10 cm. Find the period of oscillation of the load.
27.Amplituda damped oscillations of a pendulum for 1 minute decreased by 2 times. How many times the oscillation amplitude is reduced for 2 minutes?
52.Opredelit weight of 12 liters of carbon dioxide at 288 K, under pressure = 900 kPa.
77.Do what temperature to heat 3.2 kg of oxygen taken at a temperature of 0 ° C to when the isobaric expansion work was completed 16.2 kJ?
102.Srednyaya the mean free path of the molecules of hydrogen at a temperature of 300 K is = 2.3 cm. Determine the pressure of the gas.
Examination №3
2.Odnorodny rod length of 1 m and a weight of 0.3 kg is rotated about an axis passing through the center of the rod. With what angular acceleration rotating rod, if it acts torque of 0.1 N • m?
27.Disk weighing 240 kg may be rotated about a vertical axis. At the edge of the disc is a person weighing 60 kg. At what angle turn the disk, if a person will pass it on the edge and will return to the starting point?
52.Iz water depth of 10 m at a constant speed crane lifts the cast steel weighing 780 kg. Find the work done by crane if the casting was raised to a height of 4 meters above the water surface.
77.Shar 6 cm in diameter and weighing 0.25 kg rolls without sliding on the horizontal plane. Rotational speed of the ball is 4 / s. Find the total kinetic energy of the ball.
102.Vo many times to change the speed of a bullet shot in the spring gun, if the compression of the spring to double?


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