1970

64 items

Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 1

Three communicating vessels contain water and are covered by pistons made of the same material and having the same thickness.
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Kvant Physics Problem 2

Two balls of masses $m_1$ and $m_2$ are placed on a smooth horizontal plane and connected by a spring of stiffness $c$.
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Kvant Physics Problem 3

Two helical springs are made from identical pieces of steel wire.
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Kvant Physics Problem 4

A sample of an unknown purified gas is contained in a cylinder.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 5

The circuit consists of ideal voltage sources and resistors connected as depicted in Figure 4.
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Kvant Physics Problem 6

A conducting sphere of radius $r$ is connected to ground.
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Kvant Physics Problem 7

We consider a horizontal rod of length $l$ that rotates about a vertical axis passing through the point $O_1$.
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Kvant Physics Problem 8

The system consists of a long rigid rod of length $L$ and mass $m$.
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Kvant Physics Problem 9

A small mass moves on a horizontal table attached to a fixed point by a spring.
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Kvant Physics Problem 10

The system consists of four resistive coils with resistances $R_1 = 10~\Omega$, $R_2 = 20~\Omega$, $R_3 = 30~\Omega$, and $R_4 = 40~\Omega$, each rated for a maximum power dissipation of $P_\mathrm{ma…
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 11

The system consists of three open barrels containing water.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 12

The only identified defect is the justification of the initial phases and velocity directions.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 13

Two identical vertical cylinders are connected by a horizontal tube and filled with water.
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Kvant Physics Problem 14

Two pistons of masses $m_1$ and $m_2$ close the ends of two connected tubes whose cross sectional areas are $S_1$ and $S_2$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 15

The physical system is a refrigerator operating between the refrigerated compartment and the surrounding room.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 16

The physical system is a car moving along a horizontal road.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 17

A parallel-plate capacitor has plate separation $d$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 18

Two transparent combs are superimposed and viewed against a uniform source of light.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 19

The system consists of two open vessels connected by a horizontal tube near their bottoms.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 20

The body is a long homogeneous cylinder of outer radius $R$.
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Kvant Physics Problem 21

Two identical DC motors have their armature shafts rigidly connected, so both armatures rotate with the same angular velocity $\omega$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 22

Consider a homogeneous piece of iron.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 23

Two identical thin-walled tubes, each of mass $m$ and radius $R$, lie on a horizontal plane.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 24

A body of mass $M$ is initially resting on a stand and attached to a vertical spring of spring constant $k$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 25

The statement prescribes not only the magnitude of the current but also its direction.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 26

A small block moves without friction on a smooth surface consisting of two horizontal half-planes separated in height by a vertical distance $h$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 27

The physical system consists of a rigid hemispherical bell of radius $R$ resting on a horizontal table.
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Kvant Physics Problem 28

Two large parallel plates of area $A$ are separated by a distance $L$, with $L$ much smaller than the plate dimensions so edge effects are neglected.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 29

The solution correctly addresses the exercise.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 30

A car moves along a straight road with its wheels rolling without slipping.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 31

Consider a sphere of radius $R$ illuminated by a parallel beam of sunlight.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 32

Let the side length of the square cross section be $a$.
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Kvant Physics Problem 33

Two beads of masses $m_1$ and $m_2$ move without friction on a smooth horizontal circular wire ring of circumference $L$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 34

A hollow insulated conducting sphere of radius $R$ is charged by water drops falling from a vertical tube.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 35

The physical system consists of a satellite in low Earth orbit photographing the surface of the Earth.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 37

Two vertical cylinders of cross-sectional areas $S_1$ and $S_2$ are open to the atmosphere at their upper ends.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 39

Consider a planet of radius $R$ and mass $M$ surrounded by an atmosphere of uniform density $\rho$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 40

A neon-filled discharge tube is placed between two large parallel plate electrodes separated by a distance
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 41

The physical system consists of sunlight incident on the Moon and the light scattered by the illuminated lunar hemisphere toward the Earth.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 42

A flexible rope passes over an ideal pulley.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 43

A planet is modeled as a sphere of radius $R$ filled with an incompressible liquid of constant density $\rho$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 44

The physical system consists of two dolphins moving through water along the same straight line toward one another.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 45

A spherical capacitor consists of two concentric conducting spheres of radii $a$ and $b$, with $a<b$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 47

**Solution to patch**
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 48

A mass $m$ is attached to a rope wound around the shaft of a dynamo armature.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 49

A U-shaped tube contains water.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 50

The system consists of two identical cubes, each of mass $m$, placed on a smooth horizontal table.
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Kvant Physics Problem 51

A camera obscura is modeled as a rectangular box of length $L$ with a small circular aperture of diameter $d = 1,\text{mm} = 1\times 10^{-3},\text{m}$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 52

A ball is thrown vertically upward from a point that will also be taken as the point to which it later returns.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 54

The circuit contains an ideal source of electromotive force with voltage $U$, several ideal resistors, and an ammeter with negligible resistance placed in one branch of the network.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 55

An arrow of mass
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Kvant Physics Problem 56

A flag is modeled as a thin flexible sheet of characteristic length $L$ and mass per unit area $\sigma$, clamped along one edge to a rigid pole.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 57

Two identical balls, each of mass $m$, are connected by a massless spring of stiffness $k$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 58

The system consists of a thin metallic ring of mass $m$ and resistance $R$, with diameter $d$, falling vertically in a magnetic field that points along the vertical direction.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 60

A candle is placed in front of an ideal plane mirror.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 63

The physical system consists of a person moving on an icy slope inclined at an angle $\alpha$ to the horizontal.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 64

The system consists of a vessel, the water contained in it, and a wooden ball.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 65

The system consists of two conducting plates and the ground.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 66

The circuit consists of a battery with electromotive force
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Kvant Physics Problem 67

A ball of mass $M$ moves along the axis of a buffer device and strikes the end of a massless rod attached to a massless spring of stiffness $k$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 68

The physical system consists of a rigid container containing an ideal gas whose bulk temperature is $T_1$, while the walls are maintained at temperature $T$.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 69

The fragment “NOT_FOUN_” contains no equations, constraints, or target quantity, so the problem cannot be instantiated as a well-posed Kvant task.
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Practice › Kvant › Kvant Physics › 1970 ›

Kvant Physics Problem 70

The physical system is a cyclist moving along a road.
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Kvant Physics Problem 71

Consider a straight line segment $AB$ carrying a uniform linear charge density $\lambda$.
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