1. What things are important in determining the hydrostatic pressure at the bottom of a liquid filled vessel?

2. What levels of pressure can be found in the deepest parts of the earth's oceans?

A compact disk, which has a diameter of 12.0 cm, speeds up uniformly from zero to 4.30rev/s in 3.15s .

Part A

What is the tangential acceleration of a point on the outer rim of the disk at the moment when its angular speed is 2.00 rev/s?

Part B

What is the tangential acceleration of a point on the outer rim of the disk at the moment when its angular speed is 3.00 rev/s?

Children are playing a game of ice hockey on a frozen lake. One of the children throws a 1200g water bottle with velocity 0.4 m/s to another kid, weighing 41 kg, sitting motionless on the ice who catches the bottle 0.2 m from their COM at angle of impact of 12 degrees. The child on the ice has a center mass moment of inertia of 38 kg m^2. Assuming the ice is perfectly friction-less, answer the following. 1.) How does the catch add to their moment of inertia? 2.) What is the child's rotational motion after he brings the bottle closer to drink so it is now 0.1 m from their center of mass? 3.) How does a greater angle of impact affect the child's rotational motion? 4.) What is the child's rotational motion if the angle of impact was 22 degrees? (please explain using introductory physics techniques, thank you).

Suppose you have a system of two masses strung over a pulley. Mass 1 (6.7 kg) hangs on the right side of the pulley suspended over the ground at height 1.2 m. Mass 2 (2.5 kg) hangs over the left side of the pulley and rests on the ground. The pulley is a uniform disk of mass m and radius 11.3 cm. When the system is released, Mass 1 moves down and Mass 2 moves up, such that Mass 1 strikes the ground with speed 1.1 m/s. This is called an Atwood Machine. Calculate the mass of the pulley in kg.

problem 1. You notice that a string fixed at both ends produces standing waves at 440 Hz and 660 Hz, but not at any frequency in between.

a.What harmonics do these two frequencies correspond to?

b. What is the fundamental frequency?

problem 2. A bass clarinet can be modeled as a 120-cm-long tube closed at one end. A musician starts playing at room temperature (vsound = 343 m/s), but the temperature soon increases to where the speed of sound is 352 m/s. What is the change in the fundamental frequency?

problem 3. Three successive resonance frequencies in an organ pipe are 1310, 1834, and 2358 Hz. What is the length of the pipe?

Coloured objects, red ones, blue ones, whatever. For this purpose, one assumes that light is waveforms as opposed to particles of energy. Traditional theories state that a green object appears green because it reflects green light and absorbs other frequencies: red, likewise. What property does the substance have to cause it to reflect certain wavelengths and to absorb others? Is this related to luminescence and fluorescence?

1.16 [1pt] Consider an infinite non-conducting plane having a charge density of 1 C/m^2. Sketch electric field lines and indicate the value of electric field 1 m away from the plane

1.16 ANSWER

1.17 [1pt] Let’s add a point charge of-1C, at a distance 1 m from the plane in problem 1.18. What would be the force onto the charge?

1.17 ANSWER

1.18 [2pt] How much work will it take to remove the point charge in 1.17 from where it was infinitely far away from the plain. Explain your answer to the best of your knowledge.

1.18 ANSWER

Consider a conducting sheet with dimensions 1m by 1m by 1mm. A charge of 1 C was deposited into it, assume it is spread uniformly along the surface.

1.19 [1pt] What is electric field inside the sheet?

1.19 ANSWER

A cylinder with rotational inertia I₁ = 2.6 kg · m^2 rotates clockwise about a vertical axis through its center with angular speed ω₁ = 5.8 rad/s. A second cylinder with rotational inertia I₂ = 1.3 kg · m2 rotates counterclockwise about the same axis with angular speed ω₂ = 6.6 rad/s. If the cylinders couple so they have the same rotational axis, what is the angular speed of the combination (in rad/s)?

What percentage of the original kinetic energy is lost to friction?

1.12 [2pt] Consider one infinitely long straight wire with a uniform charge density of 1 C/m. Sketch the electric field around the wire

1.12 ANSWER

1.13 [2pt] In problem 1.12, calculate the magnitude of electric field at a distance R from the wire. How is it different (if any) from the field of a point charge?

1.13 ANSWER

1.14 [2pt] Consider two infinite wires 1 m apart with a uniform charge density per unit length 1 C/m. Calculate the force per unit length between the wires. To do this, just select a tiny, nearly point-like section of a wire of length Land calculate the force due to the electric field of the other wire using the Coulomb’s law. Your answer should be proportional to L. Divide it by L and this is the force per unit length.

1.14 ANSWER

1.15 [1pt] Explain, in a few sentences, how the electric force between two charged wires differs from the regular Coulomb law and why.

1.15 ANSWER

A short section of coaxial cable consists of a line current along the z-axis from z = -L to z = L carrying current ?0?̂ surrounded by a hollow cylindrical shell (centered on the z-axis, top at z = L , bottom at z = -L) carrying a surface current ?⃗⃗ = ?0 (−?̂). Radius R

a. Find an expression for the magnetic field at an arbitrary point (x, y, z)

b. Draw a qualitative graph of the magnetic field as a function of position on the x-axis.

A brine solution with a density of 1230 kg/m³ moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is P₁ = 2.00 ✕ 10⁴ Pa, and the pipe diameter is 7.00 cm. At another point y = 0.40 m higher, the pressure is P₂ = 1.25 ✕ 10⁴ Pa and the pipe diameter is 3.50 cm.

(a) Find the speed of flow (in m/s) in the lower section.

(b) Find the speed of flow (in m/s) in the upper section.

(c) Find the volume flow rate (in m³/s) through the pipe.

In visible light, which color has the longest wavelength?'

Are Microwave, Visible Light, Gamma rays in order of lowest to highest energy?

are Radio broadcast, cell phone and GPS examples of technologies that uses radio waves

Each of the two identical springs in the figure below has force constant k = 1.16 103 N/m, d = 1.21 m, and θ = 29.0°. (a) Find the unstretched length of each spring. (b) Find the instantaneous acceleration of the weight if it is pulled 10.0 cm lower and released.

A charge of 3.77 μC is held fixed at the origin. A second charge of 3.45 μC is released from rest at the position (1.25 m, 0.570 m).

A.) If the mass of the second charge is 2.85 g , what is its speed when it moves infinitely far from the origin?

B.)At what distance from the origin does the second charge attain half the speed it will have at infinity?

The blood speed in a normal segment of a horizontal artery is 0.100 m/s. An abnormal segment of the artery is narrowed down by an arteriosclerotic plaque to 1/5 of its normal cross-sectional area. What is the difference in blood pressure between the normal and constricted segments of the artery?