(a) Find the pressure difference on an airplane wing if air flows over the upper surface with a speed of 114m/s , and along the bottom surface with a speed of 107m/s . (in kPa)

(b) If the area of the wing is 32m2 , what is the net upward force exerted on the wing? (in kN)

Asteroid X, speeding at 100 m/s towards an equally massive but stationary asteroid Y, collides with a glancing blow. After collision, X is deflected at 35 degrees from its original direction while Y travels at 45 degrees to the original direction of X, assume total momentum is conserved.

a. Find the speed of each asteroid after collision.

b. What fraction of the original KE is lost in the collision?

Jennifer lifts a 2.4 kg carton of cat litter from the floor to a height of 0.81 m.

(a) How much total work is done on the carton during this operation?

___________J

b) Jennifer then pours 0.7 kg of the litter into the cat's litter box on the floor. How much work is done by gravity on the 0.7 kg of litter as it falls into the litter box?

____________J

Special relativity: describe the principle of relativity and Lorentz transformations, and derive the effects of time dilation and length contraction. Also explain the meaning of the equation E = m c2

Basic understandings of each part of the question please. I am trying to figureout the concept of my curriculum.

Oil has a density ? of 860kg/m3. An oil droplet is suspended between two plates 1.0cm apart by adjusting the potential difference between them to 1177V. When the voltage is removed, the droplet falls and quickly reaches constant speed. It is timed with a stopwatch and falls 3.00mm in 7.33s. The viscosity of air is 1.83

A very long, straight solenoid with a cross-sectional area of 5.85 cm^2 is wound with 32 turns of wire per centimeter, and the windings carry a current of 0.245 A . A secondary winding of 2 turns encircles the solenoid at its center. When the primary circuit is opened, the magnetic field of the solenoid becomes zero in 4.75×10^−2 s .

What is the average induced emf in the secondary coil?

a) write down the decay process for carbon-10.

       b) calculate the change in energy for the reaction?

       c) show the shell model for the reaction and explain how this shows which element is stable?

       d) calculate the binding energies and the binding energy per nucleon for the reaction.

       e) does this also enable you to tell which should be stable.

Weighing Lunch

For lunch you and your friends decide to stop at the nearest deli and have a sandwich made fresh for you with 0.100 kg of turkey. The slices of turkey are weighed on a plate of mass 0.400 kgplaced atop a vertical spring of negligible mass and force constant of 200 N/m . The slices of turkey are dropped on the plate all at the same time from a height of 0.250 m . They make a totally inelastic collision with the plate and set the scale into vertical simple harmonic motion (SHM). You may assume that the collision time is extremely small.

Part A

What is the amplitude of oscillations A of the scale after the slices of turkey land on the plate?

Express your answer numerically in meters and take free-fall acceleration to be g = 9.80 m/s2 .

A = ?? m

Part B

What is the period of oscillation T of the scale?

Express your answer numerically in seconds.

T = ?? s

In an ink-jet printer, drops of ink are given a controlled amount of charge before they pass through a uniform electric field generated by two charged plates. If the electric field between the plates is 1.5x106N/C over a region 1.20cm long, and drops of mass 0.12nanograms enter the electric field region moving horizontally at 10m/s, (a) how much charge on a drop is necessary to produce a vertical deflection of 0.50mm at the end of the electric field? (b) What is the vertical deflection between the point where it leaves the plates and where it strikes the paper, if the paper is 0.50cm from the end of the charged plates? Ignore other forces such as gravity and air resistance, and assume the field between the plates is vertical and constant, and drops abruptly to zero at the edge of the plates. (a) C (b) cm

(a) A block of mass m = 3.90 kg is suspended as shown in the diagram below. Assume the pulley to be frictionless and the mass of the strings to be negligible. If the system is in equilibrium, what will be the reading of the spring scale in newtons? N

(b) Two blocks each of mass m = 3.90 kg are connected as shown in the diagram below. Assume the pulley to be frictionless and the mass of the strings to be negligible. If the system is in equilibrium, what will be the reading of the spring scale in newtons? N

(c) A block of mass m = 3.90 kg is in equilibrium on an incline plane of angle θ = 28.0° when connected as shown in the diagram below. Assume the mass of the strings to be negligible. If the system is in equilibrium, what will be the reading of the spring scale in newtons? N

The figure is a section of a conducting rod of radius R₁ = 1.45 mm and length L = 12.60 m inside a thin-walled coaxial conducting cylindrical shell of radius R₂ = 10.7R₁ and the (same) length L. The net charge on the rod is Q₁ = +3.56

We observe a glancing collision between two billiard balls of the same mass. The first ball is incident at a speed of 6.36 m/s, strikes the second ball (initially at rest) and moves off with a speed of 5.54 m/s at an angle of 29.5

(a)i. Name five common feautures of catalysis ii. Describe adsorption, desorption, physisorption and chemisorption. (b) Draw a labeled phase diagram for water and explain it briefly.

A ski starts from rest and slides down a 30 ∘ incline 70 m long.

A)If the coefficient of friction is 0.075, what is the ski's speed at the base of the incline?

B)If the snow is level at the foot of the incline and has the same coefficient of friction, how far will the ski travel along the level? Use energy methods.