In elastic collision between the two bodies __________.

When the force and displacement are parallel to each other, then work is __________.

In rotational motion, the quantity, which plays the same role as the inertial mass in linear motion, is called ___________.

Pairs of forces of equal magnitude act on identical cylinders as shown in the figures. In which example is the cylinder in translational and rotational equilibrium?

Four identical particles, each with mass m, are arranged in the x, y plane as shown. They are connected by light sticks to form a rigid body. If m = 2.0 kg and a = 1.0 m, the rotational inertia of this array about the y-axis is:

Three identical objects, each of mass M, are fastened to a massless rod of length L as shown. The rotational inertia about one end of the rod of this array is:

How defines period of physical pendulum?

Find a sample of the physical pendulum:

A sound wave can be characterized as

Sound travels faster in

A woman sits on a spinning stool with her arms folded. When she extends her arms, which of the following occurs

The pressure at the surface of the ocean is 1 atm (1 x 10⁵Pa). At what approximate depth in the ocean water (ρ= 1025 kg/m³) would the absolute pressure be 2 atm?

What is the direction of angular momentum for the bowling ball that rotates about z-axis?

A parallel-plate capacitor with air between the plates has an area A=2.00·10⁴ m² and a plate separation d=1.00 mm. Find its capacitance.

Find the equivalent capacitance between a and b for the combination of capacitors shown in Figure. All capacitances are in microfarads.

nA parallel-plate capacitor has plates of dimensions 2.0 cm by 3.0 cm separated by a 1.0-mm thickness of paper. Find its capacitance (k = 3.7, ε₀=8.85·10^-12 C²/N·m²).

Find the electric flux Φ_e though the spherical surface, covers the point-like charges q₁=5 nC and q₂=-2 nC. (ε₀=8.85·10^-12 C²/N·m²)

Find the attractive force F between nuclei of hydrogen atom and electron. Radius of hydrogen atom is r=0.5·10^-10 m; modules charge of nuclei are equal and opposite to charge sign of electron (ε₀=8.85·10^-12 C²/N·m²).

Two point-like charges in air (ε=1) at the distance r₁=20 sm from each other interact with some force. At what distance r₂ one needs to place this charges in oil (ε₂=5) to get the same force of interaction?

What times the gravitational force between two protons less the electrostatic force of their repulsion? The charge of proton is equal on module and opposite on sign of charge of electron.

The electron and proton of a hydrogen atom are separated (on the average) by a distance of approximately 5.3·10^-11 m. Find the magnitudes of the electric force between the two particles. (k_e=8.99·10⁹ N·m²/C²)

Calculate the resistance of an aluminum cylinder that has a length of 10.0 cm and a cross-sectional area of 2.00·10^-4 m² (ρ=2.82·10^-8 Ω·m).

Calculate the resistance of an glass cylinder that has a length of 10.0 cm and a cross-sectional area of 2.00·10^-4 m² (ρ=3·10¹⁰ Ω·m).

Calculate the resistance per unit length of a 22-gauge Nichrome wire, which has a radius of 0.321 mm (The resistivity of Nichrome is 1.5·10^-6 Ω·m).