физика(англ)

1

Scientific hypotheses. Physical laws. Physical theories.

2

Mechanical movement and its views. Relativity of motion.

3

Reference system. Speed.  Acceleration. Rectilinear uniformly accelerated motion.

4

Newton’s first law. Inertial reference systems .

5

Interaction of bodies. Power. Weight. Newton’s second law.

6

Newton’s third law.

7

Momentum of the body. The law of conservation of momentum.

8

Jet propulsion in nature and technology.

9

The law of universal gravitation. Gravity. Weightlessness.

10

Sliding friction. The resilient force.

11

Hooke’s law.

12

Job. Mechanical energy.

13

Kinetic and potential energy.

14

The law of conservation of mechanical energy.

15

Mechanical vibrations. Free and forced vibrations.

16

Resonance. The conversion of energy to mechanical vibrations.

17

The emergence of the atomic structure of matter hypothesis and experimental evidence.

18

Ideal gas. The basic equation of the molecular-kinetic theory of an ideal gas.

19

Absolute temperature as a measure of the average kinetic energy of thermal motion of particles of matter.

20

The gas pressure. Ideal gas state equation.

21

Evaporation and condensation.

22

Saturated and unsaturated vapors. Humidity.

23

Work in thermodynamics. Internal energy.

24

The first law of thermodynamics. Adiabatic process.

25

The second law of thermodynamics.

26

Interaction between charged bodies. Coulomb’s law.

27

The law of conservation of electric charge. Electric field.

28

An electrical capacitance. Capacitors.

29

Energy of a charged capacitor. The use of capacitors.

30

Electric current. Work and power in DC(direct current).

31

Ohm’s law for the full circuit.

32

The magnetic field. Effect of magnetic field on the electric charge. Magnetic induction.

33

Electric field in a semiconductors.

34

The phenomenon of electromagnetic induction.

35

Magnetic flux. Law of electromagnetic induction. Lenz rule.

36

The phenomenon of self-induction.

37

Inductance. Magnetic field energy.

38

Electromagnetic field. Electromagnetic waves.

39

Rutherford’s experiments on the scattering of  alfa particles. Nuclear model of the atom.

40

Quantum Bohr postulates. Lasers. Emission and absorption of light by atoms. Spectra.

1

Bullet mass m = 10 g, flying with a horizontal velocity v = 400 m / s , falls into a sand box mass M = 4 kg hangs on a long string, and it stuck. What is the height to which the center of mass of the box is lifted, if the bullet stuck in it?

42

Two forces, one with a magnitude of 3N and the other with a magnitude of 5N, are applied to an object. For which orientations of the forces shown in the diagrams is the magnitude of the acceleration of the object the least?

43

A car moves horizontally with a constant acceleration of 3m/s2. A ball is suspended by a string from the ceiling of the car. The ball does not swing, being at rest with respect to the car. What angle does the string make with the vertical?

44

The mass of a hypothetical planet is 1/100 that of Earth and its radius is 1/4 that of Earth. If a person weighs 600N on Earth, what would he weigh on this planet?

45

A crate is initially at rest on a horizontal frictionless table. A constant horizontal force F is applied. Which of the following five graphs is a correct plot of work W as a function of the crate’s speed v?

46

A 2-kg block is attached to a horizontal ideal spring with a spring constant of 200N/m. When the spring has its equilibrium length the block is given a speed of 5m/s. What is the maximum elongation of the spring?

47

A boat moves relative to water with a velocity which is n = 2 times less than the river flow velocity. At what angle to the stream direction must the boat move to minimize drifting?

48

Twenty-five identical molecules are in a box. Microstates are designated by identifying the molecules in the left and right halves of the box. The Boltzmann constant is 1.38×10−23 J/K. The entropy associated with the configuration for which 15 molecules are in the left half and 10 molecules are in the right is half?

49

273 cm3 of an ideal gas is at 00C. It is heated at constant pressure to 100 C. Locate the destination volume of gas.

50

The airplane shown is in level flight at an altitude of 0.50 km and a speed of 150 km/h. Atwhat distance d should it release a heavy bomb to hit the target X? Take g = 10m/s2.

51

A stone is thrown outward from the top of a 59.4-m high cliff with an upward velocity componentof 19.5m/s. How long is stone in the air?

52

A large cannon is fired from ground level over level ground at an angle of 30◦ above thehorizontal. The muzzle speed is 980m/s. Neglecting air resistance, the projectile will travelwhat horizontal distance before striking the ground?

53

A boy on the edge of a vertical cliff 20m high throws a stone horizontally outward with a speedof 20m/s. It strikes the ground at what horizontal distance from the foot of the cliff? Useg = 10m/s2.

54

A girl wishes to swim across a river to a point directly opposite as shown. She can swim at2m/s in still water and the river is flowing at 1m/s. At what angle θ with respect to the linejoining the starting and finishing points should she swim?

55

A motor boat can travel at 10 km/h in still water. A river flows at 5 km/h west. A boaterwishes to cross from the south bank to a point directly opposite on the north bank. At whatangle must the boat be headed?

56

Two small charged objects attract each other with a force F when separated by a distanced. If the charge on each object is reduced to one-fourth of its original value and the distancebetween them is reduced to d/2 the force becomes?

57

Two identical charges, 2.0m apart, exert forces of magnitude 4.0N on each other. The valueof either charge is:

58

Particles 1, with charge q1, and 2, with charge q2, are on the x axis, with particle 1 at x = aand particle 2 at x = −2a. For the net force on a third charged particle, at the origin, to bezero, q1 and q2 must be related by q2 -?

59

An object with an initial velocity of 12 m/s west experiences a constant acceleration of 4 m/s2west for 3 seconds. During this time the object travels a distance-?

60

A projectile is shot vertically upward with a given initial velocity. It reaches a maximum heightof 100 m. If, on a second shot, the initial velocity is doubled then the projectile will reach amaximum height of-?

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