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Provide reasoning for the observed regioselectivity for addition of each mole of hydrogen bromide.
A 1.28m long vertical glass tube is filled with a liquid at 20 degrees celcius. How much will the height of the liquid column change when the tube is hearted to 30 degrees celcius?
If car one accelerates at 6.00m/s^2 up to maximum speed of 30.0m/s and car 2 accelerates at 5.00m/s^2 up to a maximum speed of 35.0 m/s, how long does it take the cars to meet?
The volumetric efficiency of the compressor. If the pressure ratio is doubled, what will the new clearance volume need to be in order that the volumetric efficiency is not reduced?
If cin = cb (1 - e-0.12t), calculate the outflow concentration of a conservative substance (no reaction) for a single, completely mixed reactor as a function of time.
A gas cylinder containing 3.88 mol of helium has a pressure of 549 mm Hg at 298 K.If 1.22 mol of neon is added to this cylinder, at constant temperature and volume, the pressure will rise to 1750 mm
In any triangle, the sum of the measures of the angles is 180°. in a triangle ABC, angle A is four times as large as angle B. Angle C measures 20° less than angle B. Find the measure of each
Assume it takes 7.00 minutes to fill a 30.0-gal gasoline tank. Calculate the flow rate of the gasoline in cubic meters per second.
A proton is moving parallel to a uniform electric field. The electric field accelerates the proton and increases its linear momentum to 4.00 10-23 kg·m/s from 1.20 10-23 kg·m/s in a ti
Your friend's mass is 65kg. If she jumps off a 110-cm high table, how far does the Earth move toward her as she falls? A 2.4kg object is moving along the x-axis at 1.55m/s.
What is the tidal acceleration between your head and your toes due to the Moon? And what due to the Earth? How do these compare to the acceleration due to the Earth's gravity?
The speed of sound is 343 m/s. At what frequency does the driver of the car hear the ambulance's siren? Answer in Hz.
The maximum wavelenght for photoelectric emission in tungsten is 230 nm. What wavelength of light must be used in order for electrons with a maximum energy of 1.5 eV to be ejected?
Bob has just finished climbing a sheer cliff above a beach and wants to figure out how high he climbed. All he has to use; however, is a baseball, a stopwatch, and a friend on the ground below with
If the listener then moves toward the approaching source with a velocity of 25m/s, due west, he hears a frequency f2 that differs from f1 by 37 Hz. What is the frequency of the source? (Take the spe
Typical white dwarf stars ate composed of material with a bulk modulus of 1.33 x 1022 Pa and a density of 1010 kg/m3. They have radii equal to 9.0 x 10-3 solar radius. What is the approximate pulsat
The booming apparently results from a periodic oscillation of the sliding layer of sand-the layer's thickness expands and contracts. If the emitted frequency is 90 Hz, what are:
An ambulance with a siren emitting a whine at 1,600 Hz overtakes and passes a cyclist pedaling a bike at 2.44 m/s. After being passed, the cyclist hears a frequency of 1590 Hz. How fast is the ambul
The other end passes over a pulley and supports a 1.5D-kg mass. The linear mass density of the rope is 0.0550 kg/m. (a) What is the speed of a transverse wave on the rope?
With what tension must a rope with length 2.50 m and mass 0.120 kg be stretched for transverse waves of frequency 40.0 Hz to have a wavelength of 0.750 m?
A 65-kg person jumps from a window to a fire net 18m below, which stretches the net 1.1m. Assume that the net behaves like a simple spring, and (a) Calculate how much it would stretch if the same pe
A small fly of mass 0.25 g is caught in a spider's web. The web vibrates predominately with a frequency of 4.0 Hz. (a) What is the value of the effective spring stiffness constant k for the web?
Schottky vacancies suppose that the energy required to remove a sodium atom from the inside of a sodium crystal to the boundary is 1eV. Calculate the concentration of Schottky vacancies at 300K.
You will explain in detail the principles and laws of electrodynamics under which Maglevtrains operate. You will describe propulsion, guidance and levitation(250 word min for each question):
A piano wire with mass 3.00 g and length 80.0 cm is stretched with a tension of 25.0 N. A wave with frequency 120.0 Hz and amplitude 1.6 mm travels along the wire. (a) Calculate the average power ca